Performance information

• The Relation Between Genres and the Morphological Tendencies of Dependency Trees of Spoken Japanese　　　　　　　　　　　　　　　
  高松 亮
  社会科学論集 = SHAKAIKAGAKU－RONSHU (The Social Science Review), Number：149, First page：43, Last page：52, 2017
  In this paper, we focus on a quantitative analysis of stylistic differences using features which represent local and global forms of dependency trees. We investigate differences between two styles of spoken Japanese （"Simulated Public Speaking （SPS）" and "Academic Presentation Speech （APS）," which are included in Corpus of Spoken Japanese）. The results show that the forms of dependency trees are" tall and narrow" in APS and "low and wide" in SPS, and this demonstrates the fact that the proposed features, while effectively depicting distinct tendencies, arise from different styles.
  埼玉大学経済学会, Japanese
  ISSN：0559-7056, CiNii Articles ID：120006388808, CiNii Books ID：AN00109186
• Comparison between Spoken and Written Utterances Describing the Same Object　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; KIKUCHI Hideaki
  The Transactions of the Institute of Electronics, Information and Communication Engineers. A, Volume：95, Number：1, First page：146, Last page：156, Jan. 2012
  本論文では,被験者が提示された一連のストーリーをもった複数コマからなる静止画像について説明することにより,同じ対象を叙述した話し言葉と書き言葉についての発話データを得る手法を提案する.実験の結果得られたデータを分析し,書き言葉と話し言葉という二つのモード間の差異,発話の送り手と受け手の間での画像を共有するか否かに依存したレジスタ間の差異について,各品詞の出現頻度,文のモーラ数,形態素のモーラ数,TTR(Type-Token Ratio,延べ語数に対する異なり語数の割合),発話の意味内容の比較という観点からの知見が得られ,本手法の有効性を評価することができた.
  一般社団法人電子情報通信学会, Japanese
  ISSN：0913-5707, CiNii Articles ID：110008898133, CiNii Books ID：AN10013345
• Pointing Device Based on Tracking and Recognition of Hand with Local Moments　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; SATO Makoto
  Human interface. The Transaction of Human Interface Society, Volume：1, Number：1, First page：45, Last page：52, Feb. 1999
  ヒュ-マンインタフェ-ス学会, Japanese
  ISSN：1344-7262, CiNii Articles ID：10009676414, CiNii Books ID：AA11324440
• 頭部姿勢情報を利用した仮想空間把提のための補助機構(画像情報システム研究会)　　　　　　　　　　　　　　　
  高松 亮; 谷口 知隆; 佐藤 誠
  Volume：52, Number：8, First page：1194, Last page：1194, Aug. 1998
  Japanese
  ISSN：1342-6907, CiNii Articles ID：110003692347, CiNii Books ID：AN10588970
• An Assistnce Mechanism to Browse Virtual Space Using Head Posture　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; TANIGUCHI Tomotaka; SATO Makoto
  ITE Technical Report, Volume：22, Number：26, First page：7, Last page：12, May 1998
  In this paper, we name the action of browsing 3D virtual space in human scale virtual environment using scrolling technique "space browsing", and propose space browsing interface system based on estimating user's head posture. Head posture estimation is carried out in real-time by processing image of an oval marker put on user's head. Because the oval marker is attached on a cap, a user can put on the marker easily and naturally by just wearing the cap. Our method gives natural feeling to a user because the direction of scrolling has good consistency to user's direction of attention. We made experiment in which space browsing interfaces based on mouse and our method are compared, and the result shows that our method gives shorter task completion time.
  The Institute of Image Information and Television Engineers, Japanese
  DOI：https://doi.org/10.11485/itetr.22.26.0_7
  DOI ID：10.11485/itetr.22.26.0_7, ISSN：1342-6893, CiNii Articles ID：110003689854, CiNii Books ID：AN1059086X
• Shape Operator and its Application to Texture Analysis　　　　　　　　　　　　　　　
  PHONGSUPHAP Sukanya; TAKAMATSU Ryo; SATO Makoto
  The Journal of the Institute of Television Engineers of Japan, Volume：51, Number：10, First page：1730, Last page：1737, Oct. 1997
  Properly representing image structure is a major problem faced in developing a computer vision system. This paper proposes a concise descriptor called the shape operator for describing image structure. We first consider an image function as a surface, then establish the shape operator by utilizing surface curvatures. The shape operator can give rich, detailed descriptions in terms of topographical shapes and has invariance properties which are required in computer vision systems. We show usefulness of the shape operator with a texture classification application. Experimental results indicate that the shape operator gives a representation that is sufficiently detailed for characterizing texture images. In particular, it can satisfactorily mitigate the adverse effects of variations in lighting.
  The Institute of Image Information and Television Engineers, Japanese
  DOI：https://doi.org/10.3169/itej.51.1730
  DOI ID：10.3169/itej.51.1730, ISSN：1342-6907, CiNii Articles ID：110003691406, CiNii Books ID：AN10588970
• Head Posture Estimation Method for Vision Based Human Interface　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; TAKADA Yasuhiro; SATO Makoto
  The Transactions of the Institute of Electrical Engineers of Japan. C, Volume：117, Number：10, First page：1404, Last page：1411, Oct. 1997
  電気学会, Japanese
  ISSN：0385-4221, CiNii Articles ID：10002811747, CiNii Books ID：AN10065950
• Head Posture Estimation by Moment Feature　　　　　　　　　　　　　　　
  Takamatsu Ryo; Sato Makoto
  PROCEEDINGS OF THE ITE ANNUAL CONVENTION, Volume：1997, First page：364, Last page：365, 1997
  A method to estimate viewpoint of a user from the image of singular marker put on the head is proposed. Using the moment features which represents non-local feature of image, such as the gravity center or the breadth, our method estimate viewpoint of a user by three layered neural network. Experimental result shows that our method has good performance.
  The Institute of Image Information and Television Engineers, Japanese
  DOI：https://doi.org/10.11485/iteac.1997.0_364
  DOI ID：10.11485/iteac.1997.0_364, ISSN：1343-1846, CiNii Articles ID：110004066919, CiNii Books ID：AA11395540
• Head Posture Estimation Method for Vision Based Human Interface　　　　　　　　　　　　　　　
  Takamatsu Ryo; Takada Yasuhiro; Sato Makoto
  IEEJ Transactions on Electronics, Information and Systems, Volume：117, Number：10, First page：1404, Last page：1411, 1997
  In this paper, we propose a method to estimate posture of human head, which is suitable for constructing vision-based human interface. By the proposed method, the position and the direction of the head are estimated from the image of singular marker put on the head of a user. As the feature, moments of image up to second degree are used. Posture is estimated by estimation system which consists of observation model based on local analysis and compensation function. Our method has the following characteristics important for posture estimation method as an element of general use human interfaces. Firstly, it does not constrain user, since it is vision based method. Secondly, a user only have to put singular marker on the top of the head, and thus easily puts on and takes off the marker. Thirdly, because the features to represent the marker are moments up to second degree, we can expect considerable robustness to noise and less computational cost. The experimental results shows validity of our method.
  一般社団法人 電気学会, Japanese
  ISSN：0385-4221, CiNii Articles ID：130006844434, CiNii Books ID：AN10065950
• Viewpoint estimation based on moment feature
  Ryo Takamatsu; Yasuhiro Takada; Makoto Sato
  Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers, Volume：51, Number：8, First page：1262, Last page：1269, 1997
  This paper proposes viewpoint estimation method intended to be used as the basic device to estimate user's intension in a visual environment. Our method is based on moment feature which represents non-local feature of image, such as the gravity center or the breadth, and has less computational cost and considerable robustness to noise. We also propose the form and use of marker suitable for our purpose. That is, putting an oval marker on the top of a user's head. Experimental result shows that our method has good performance.
  Inst. of Image Information and Television Engineers, Japanese
  DOI：https://doi.org/10.3169/itej.51.1262
  DOI ID：10.3169/itej.51.1262, ISSN：1342-6907, SCOPUS ID：0031195956
• A Proposal of Gaussian Segmentation　　　　　　　　　　　　　　　
  IDO Shun; ARAI Satoshi; TAKAMATSU Ryo; SATO Makoto
  The transactions of the Institute of Electronics, Information and Communication Engineers, Volume：79, Number：6, First page：1064, Last page：1071, Jun. 1996
  人間の視覚系は, 切出し処理における初期段階では, どこに目を向けどのくらいの広さで領域を切り出せばよいのかを, 刺激パターンの分布のみから判断していると考えられる. なぜなら, 切出し対象が何であるかを発見する過程において, 切出し対象の特定の性質をあらかじめ用いることができないからである. 本研究では, 人間の初期視覚に見られるこのような切出し機能をコンピュータで実現するために, ガウス領域切出しという新しい切出し手法を提案する. はじめにガウス領域切出しの定式化を行い, 更に実際に切出しを行う際に必要となる局所探索および動的探索のためのパラメータ決定アルゴリズムを構築する. また, 実画像を用いた切出し実験によって本手法の有効性を検証する.
  社団法人電子情報通信学会, Japanese
  ISSN：0915-1923, CiNii Articles ID：110003227547, CiNii Books ID：AN1007132X
• A Fundamental Study on Moving 0bject Tracking Using Local Moments　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; SATO Makoto; NARA Yutaka; KAWARADA Hiroshi
  The Transactions of the Institute of Electronics, Information and Communication Engineers. A, Volume：79, Number：2, First page：399, Last page：407, Feb. 1996
  マルチモーダルなコミュニケーション手段の発達に伴って, 画像情報をヒューマンインタフェースに用いることが一般化すると考えられる. 使用者がカメラの視野の中での自分の顔などの位置や大きさが適切かどうかを意識することなくコミュニケーションに専念できる環境を実現するためには, 使用者の顔部を自動的に追跡し, カメラの視野の中での顔の位置や大きさを常に適切に保つ機能が不可欠である. 本論文では局所モーメントによる対象物体の観測手法を提案し, カルマンフィルタの一種であるα-βフィルタで局所モーメントのパラメータを制御しながら対象となる運動物体を追跡する手法を述べる. 特に実環境においては人物の顔などの対象が他の物体と接近した場合の対処が重要であり, その対処として本論文では障害物接近の判断機構をシステムに付与し, 判断基準に基づき対立モデルからモデルの選択を行い, そのモデルに基づき対象を精度良く推定する手法を検討した. 構築した追跡システムを評価実験, 実画像実験により検証し, 対立モデルによる障害物接近の判断機構の有効性を確認した.
  社団法人電子情報通信学会, Japanese
  ISSN：0913-5707, CiNii Articles ID：110003312387, CiNii Books ID：AN10013345
• A hierarchical description of digital grayscale images based on image dipoles　　　　　　　　　　　　　　　
  Supoj Chinveeraphan; Ryo Takamatsu; Makoto Sato
  Proceedings - International Conference on Pattern Recognition, Volume：2, First page：246, Last page：250, 1996
  Deals with a hierarchical description of digital grayscale images based on non-local structural features, called image dipoles. An image dipole is defined to be a region whose lines of slope emanate from the same maximum, and reach the same minimum. Incorporating an image dipole based representation of an image into a scale-space filtering, we propose in this paper a hierarchical image dipole description of the image. The proposed description consists of image dipole networks of some scales, and linking of image dipoles across the scales such that the description contains all local transformations of the image dipole network in the scale-space. © 1996 IEEE.
  Institute of Electrical and Electronics Engineers Inc., English, International conference proceedings
  DOI：https://doi.org/10.1109/ICPR.1996.546826
  DOI ID：10.1109/ICPR.1996.546826, ISSN：1051-4651, SCOPUS ID：0345357643
• A New Character Segmentation Method for Handwritten Documents Based on Multi-scale Analysis　　　　　　　　　　　　　　　
  ZIDOURI AbdelMalek. B. C; NAKO Kazuyuki; TAKAMATSU Ryo; SATO Makoto
  The Journal of the Institute of Image Electronics Engineers of Japan, Volume：24, Number：3, First page：216, Last page：223, Jun. 1995
  画像電子学会, Japanese
  ISSN：0285-9831, CiNii Articles ID：10011109600, CiNii Books ID：AN00041650
• 2分木表現による画像パタ-ンの特徴記述 (画像処理技術<特集>)　　　　　　　　　　　　　　　
  及川 直也; 高松 亮; 佐藤 誠
  Volume：22, Number：5, First page：p451, Last page：457, Oct. 1993
  Japanese
  ISSN：0285-9831, CiNii Articles ID：40000483340, CiNii Books ID：AN00041650
• An Optimization Model of Viewpoint and Visual Field for the Detection of an Appearing Object　　　　　　　　　　　　　　　
  Takamatsu Ryo; Nakai Satoru; Sato Makoto; Kawarada Hiroshi
  Proceedings of The ITE Annual Convention, Volume：29, First page：129, Last page：130, 1993
  In this paper, we investigate the mathematical model of detection of an object by visual system. We treat the problem as the estimation of position of objects. Given the probabilistic distribution of position of objects, the proposed model controls the viewpoint and visual field so that estimation error is minimized.
  The Institute of Image Information and Television Engineers, Japanese
  DOI：https://doi.org/10.11485/tvac.29.0_129
  DOI ID：10.11485/tvac.29.0_129, CiNii Articles ID：130006126202

• 17) 頭部姿勢推定による空間ブラウザの構成(〔ヒューマンインフォメーション研究会 ネットワーク映像メディア研究会〕合同)　　　　　　　　　　　　　　　
  谷口 知隆; 高松 亮; 佐藤 誠
  Volume：52, Number：9, First page：1290, Last page：1290, 20 Sep. 1998
  Japanese
  ISSN：1342-6907, CiNii Articles ID：110003692393, CiNii Books ID：AN10588970
• Controlling Space Browser by Head Posture　　　　　　　　　　　　　　　
  TANIGUCHI Tomotaka; TAKAMATSU Ryo; SATO Makoto
  Technical report of IEICE. Multimedia and virtual environment, Volume：98, Number：97, First page：103, Last page：110, 01 Jun. 1998
  In this paper, we name the action of browsing 3D virtual space in human scale virtual environment using scrolling technique "space browsing", and propose space browsing interface system based on estimating user's head posture. Head posture estimetion is carried out in real-time by processing image of an oval marker put on user's head. Because the oval marker is attached on a cap, a user can put on the marker easily and naturally by just wearing the cap. Our method gives natural feeling to a user because the direction of scrolling has good consistency to user's direction of attention. We made experiment in which space browsing interfaces based on mouse and our method are compared, and the result shows that our method gives shorter task completion time.
  The Institute of Electronics, Information and Communication Engineers, Japanese
  CiNii Articles ID：110003270722, CiNii Books ID：AN10476092
• Space Browsing Interface Based on Head Posture Information　　　　　　　　　　　　　　　
  TANIGUCHI Tomotaka; TAKAMATSU Ryo; SATO Makoto
  Technical report of IEICE. PRMU, Volume：97, Number：500, First page：69, Last page：75, 22 Jan. 1998
  In this paper, we name the action of browsing 3D virtual space in human scale virtual environment using scrolling technique "space browsing", and propose space browsing interface system based on estimating user's head posture. Head posture estimation is carried out by processing image of an oval marker put on user's head. Because the oval marker is attached on a cap, a user can put on the marker easily and naturally by just wearing the cap. Our method gives natural feeling to a user because the direction of scrolling has good consistency to user's direction of attention.
  The Institute of Electronics, Information and Communication Engineers, Japanese
  CiNii Articles ID：110003274319, CiNii Books ID：AN10541106
• Progressive Coding Scheme for Image Retrieval and Its Evaluation　　　　　　　　　　　　　　　
  IDO Shun; TAKAMATSU Ryo; SATO Makoto
  ITE Winter Annual Convention, Number：1997, First page：55, Last page：55, 04 Dec. 1997
  The Institute of Image Information and Television Engineers, Japanese
  ISSN：1343-4357, CiNii Articles ID：110003706485, CiNii Books ID：AA11603761
• Image Coding Scheme for Early Understandings Based on Priority of Sub-blocks　　　　　　　　　　　　　　　
  IDO Shun; TAKAMATSU Ryo; SATO Makoto
  Technical report of IEICE. PRMU, Volume：97, Number：205, First page：9, Last page：16, 25 Jul. 1997
  We propose a new coding scheme of still image for retrieving databases by means of expanding the Progressive JPEG coding. The scheme can display the image more efficiently than the conventional scheme such as the Progressive JPEG coding. At first, we get information about stimuli in the image, which is important for early stage in the human visual system. And then, we set the order of priority of sub-blocks in order to give priority to the sub-blocks which have remarkable information in the image. The experimental results of applying this scheme to the real image of persons are given, and they show that the scheme is useful for early understandings at the situations of retrieving demanded images from image databases.
  The Institute of Electronics, Information and Communication Engineers, Japanese
  CiNii Articles ID：110003274176, CiNii Books ID：AN10541106
• Head Posture Estimation Method Based on Moment Feature　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; SATO Makoto
  IPSJ SIG Notes. CVIM, Volume：1997, Number：39, First page：41, Last page：48, 15 May 1997
  In this paper, we propose a method to estimate posture of human head, in which the position and the direction of the head are estimated from the image of singular marker put on the head of a user. As the feature, moments of image up to second degree are used. Posture is estimated by estimation system which consists of observation model based on local analysis and compensation function. Our method has the following characteristics. Firstly, it does not constrain user. Secondly, a user only have to put singular marker on the top of the head, and thus easily puts on and takes off the marker. Thirdly, because the features to represent the marker are moments up to second degree, we can expect considerable robustness to noise and less computational cost. The experimental results shows validity of our method.
  Information Processing Society of Japan (IPSJ), Japanese
  ISSN：0919-6072, CiNii Articles ID：110002687499, CiNii Books ID：AA11131797
• Pointing Device Based on Tracking and Recognition of Hand by Local Moment　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; SATO Makoto; KAWARADA Hiroshi
  Proceedings of the Society Conference of IEICE, Volume：1996, First page：428, Last page：428, 18 Sep. 1996
  手指にマーカ等を付加するなどの制約のほとんどない,自然で親しみやすいポインティングデバイスのための手指形状画像の追跡・認識手法を提案する.局所的な領域のモーメント特徴による掌の追跡と手指形状の認識を行なうことで,リアルタイム性とロバスト性の両立を図る.
  The Institute of Electronics, Information and Communication Engineers, Japanese
  CiNii Articles ID：110003336725, CiNii Books ID：AN10489017
• Shape Operator: A Pre-processing for Texture Classification　　　　　　　　　　　　　　　
  Phongsuphap SUKANYA; TAKAMATSU Ryo; SATO Makoto
  Proceedings of the Society Conference of IEICE, Volume：1996, First page：393, Last page：393, 18 Sep. 1996
  A proper representation of image structure is a primary problem faced in developing an image understanding system. Previous studies concerning this context were done by D. Marr[1],R.M. Haralick et al.[2],etc. From a differential geometry viewpoint, we have proposed a descriptor called the shape operator for describing image structure[3]. It gives rich details in terms of topographical shapes and has the interesting invariance properties. In this paper, we illustrate its usefulness as a pre-processing operator in texture classification application.
  The Institute of Electronics, Information and Communication Engineers, English
  CiNii Articles ID：110003336690, CiNii Books ID：AN10489017
• Tracking with Focus of Attention by the Optimal Viewpoint and Visual Field　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; KAWARADA Hiroshi; SATO Makoto
  Technical report of IEICE. PRMU, Volume：96, Number：247, First page：63, Last page：69, 13 Sep. 1996
  This paper proposes the tracking system based on the local moment, in which the idea of the viewpoint and the visual field corresponding to local area of an image is introduced. Using local moment with the optimal viewpoint and visual field, the system estimates the target based on two models of the scene (the alternative models): the one assuming only the target object and the other assuming the target and the obstacle. The system can switch from one model to another by the decision criterion and tracks the target by controlling the parameters of the local moment in accordance with estimated values. By the two experiments the validity of the estimation by the alternative models is shown.
  The Institute of Electronics, Information and Communication Engineers, English
  CiNii Articles ID：110003274538, CiNii Books ID：AN10541106
• Using Surface Curvatures for Image Analysis　　　　　　　　　　　　　　　
  SUKANYA Phongsuphap; TAKAMATSU Ryo; SATO Makoto
  Number：32, First page：431, Last page：431, 17 Jul. 1996
  人工視覚を実現するためには画像の構造表現の方法を確立することが重要である。本研究では画像を(x, y)上の曲面とみなした場合のその局所的な幾何学的構造、特に曲面の凹凸の度合を明示的に記述することを目的とする。具体的には、曲面の曲率を用いた新たな作用素を提案し、テクスチャ解析への応用を試みる。実験結果から、本研究で提案する作用素が画像を記述する特徴量として有効であることを確認した。また、人工視覚システムを構築するために有効な不変性を持つことも明らかにした。
  The Institute of Image Information and Television Engineers, English
  ISSN：0919-1879, CiNii Articles ID：110004779190, CiNii Books ID：AN10492168
• A Study of Curvature Attributes for Texture Analysis　　　　　　　　　　　　　　　
  Phongsuphap Sukanya; Tanuma Hideki; Takamatsu Ryo; Sato Makoto
  IEICE technical report. Pattern recognition and understanding, Volume：95, Number：583, First page：63, Last page：70, 14 Mar. 1996
  A proper representation of image structure is a primary problem faced in developing a computer vision system. In this paper, we propose a concise descriptor called the shape operator for describing image structure. We first consider an image function as a surface, then establish the shape operator by utilizing surface curvatures. The shape operator can give rich detailed descriptions in terms of topographical shapes and has the invariance properties which are required in developing a computer vision system. We verify performances of the shape operator with a texture classification application. It indicates that the shape operator gives sufficient detailed representation for characterizing texture images. Particularly, it can alleviate effects of lighting condition variations to a satisfactory degree.
  The Institute of Electronics, Information and Communication Engineers, English
  CiNii Articles ID：110003299611, CiNii Books ID：AN10013232
• A Method of Dynamic Search of Gaussian Segmentation　　　　　　　　　　　　　　　
  Ido Shun; Arai Satoshi; Takamatsu Ryo; Sato Makoto
  Proceedings of the IEICE General Conference, Volume：1996, Number：2, First page：328, Last page：328, 11 Mar. 1996
  筆者らは,人間の視覚情報処理に近い切り出し機能を実現するための手法としてガウス領域切り出しを提案した.これは,刺激画像中で刺激が局部的に集中する(ガウス関数状に分布している)部分を,次式で示すような,中心の位置r,広がりτTをもつ2次元ガウス関数で切り出すものである.g(x-r,τT)=1/<4πτ>exp{-1/<4τ>(x-r)^tT^<-1>(x-r)}(1)ここで,x=(x y)r=(ζη)T=(τ_x τ_c τ_c τ_y)但し,|T|=τ_xτ_y-τ^2_c=1とする.入力刺激f(x)とガウス関数との適合度は,次式のような2乗差の積分形で定式化できる.J=∬{f(x)-Ag(x-r,τT)}^2dx(2)ガウス領域切り出しは,この適合度の評価式Jを極小化するようなパラメータの組(A,r,τ,T)を得るという最適化問題であり,7つの初期パラメータが一組与えられたとき,繰り返し演算によって解を得ることができる.本稿では,解を一つ得た後も逐次的に切り出し領域を得ることができる手法として,動的探索法を提案する.
  The Institute of Electronics, Information and Communication Engineers, Japanese
  CiNii Articles ID：110003246974, CiNii Books ID：AN10471452
• Formation of Mathematical Model for Object Tracking Using Local Moment　　　　　　　　　　　　　　　
  Takamatsu Ryo; Nara Yutaka; Sato Makoto; Kawarada Hiroshi
  Proceedings of the IEICE General Conference, Volume：1996, Number：2, First page：330, Last page：330, 11 Mar. 1996
  動画像中の運動物体の追跡手法の多くは,濃淡値の2次微分のような局所的な特徴を用いて対象物体を抽出する過程を含んでいる.しかし,それらの特徴は計算量が多く,複数物体や多量の雑音が存在する場合に処理が複雑になり精度も悪化するといった問題がある.タスクが対象の追跡に限定されている場合には,中心や大きさといった基本的特徴を観測できれば十分である.我々は,そのような特徴を観測する手法として,局所モーメントを提案した.これは,次式のように,部分的な領域を定める重み付けを画像に施し,その領域のモーメントを計算するものである.m_=∬x^iy^jG(x,y,τ)f(x,y)dxdy.G(x-ζ,y-η,τ)=1/<4πτ>exp[-<(x-ζ)^2+(y-η)^2>/<4τ>]ここで,重みGの中心位置(ζ,η)を視点,広がりτを視野と呼ぶ.なお,以降の議論ではm_の核関数部分x^iy^jG(x,y,τ)(i+j≤2)を正規直交化した計6種類の正規直交化モーメントm_i(i=0,1,2,3,4,5)を用いる.局所モーメントには計算量が少なく,雑音に対して頑健であるという利点があるが,対象物体が明示的に抽出されないため,視野に侵入した障害物を直接検知することが困難であるという問題点がある.本稿では「対立モデル」を提案する.対立モデルは,視野内に対象物体のみがあるというモデル(M_1)と,視野内に対象物体と障害物があるとみなしたモデル(M_2)の2つのモデルからなる.モデルM_1の観測値と実際の観測値の誤差(ノイズノルム)がある閾値を越えるか否かによって,障害物の接近の有無の判別を行ない,それに応じてモデルM_1とモデルM_2のいずれかを採用し,対象物体の位置と大きさなどの推定を行なう.
  The Institute of Electronics, Information and Communication Engineers, Japanese
  CiNii Articles ID：110003246979, CiNii Books ID：AN10471452
• Image Dipole Networks of Grayscale Images　　　　　　　　　　　　　　　
  Chinveeraphan Supoj; Takamatsu Ryo; Sato Makoto
  Proceedings of the IEICE General Conference, Volume：1996, Number：2, First page：331, Last page：331, 11 Mar. 1996
  In the previous work, we have proposed a methodology to segment digital grayscale images into image dipoles. An image dipole is a region enclosed by lines of slope which are drawn from saddles to maxima, and those from saddles to minima. In this article, we convert an image dipole segmentation result into the form of network which is more accessible to algorithms in real applications.
  The Institute of Electronics, Information and Communication Engineers, English
  CiNii Articles ID：110003246982, CiNii Books ID：AN10471452
• 力覚ディスプレイを用いたリモートコラボレーションシステムの提案　　　　　　　　　　　　　　　
  佐藤 誠; 石井 雅博; 山本 泰秀; 高松 亮; 河原田 弘
  Volume：J79-A, Number：2, First page：481, Last page：488, 1996
• A Human-scale Virtual Environment for Multimedia Communications　　　　　　　　　　　　　　　
  CAI Y.; WANG S.; ISHII M.; TAKAMATSU R.; SATO M.
  IEICE technical report. Image engineering, Volume：95, Number：293, First page：31, Last page：36, 17 Oct. 1995
  The Institute of Electronics, Information and Communication Engineers, English
  CiNii Articles ID：110003194930, CiNii Books ID：AN10013006
• Generation of Lattice Points of 3-D Object from Scattered Range Data　　　　　　　　　　　　　　　
  王 生進; 蔡 奕; 高松 亮; 佐藤 誠; 河原田 弘
  Volume：51, First page：221, Last page：222, 20 Sep. 1995
  In many scientific and technical endeavors, a 3-D object must be reconstructed from scattered range data. Raw range data are hard to be employed for 3-D display in realtime because the number of them is too enormous. Although triangular patch representations proposed in traditional methods up till now are used for reconstructing a 3-D object, they take too many patches. In this paper, generation of lattice points from scattered range data by re-sampling method is proposed. Using the proposed method, fewer lattice points and patches on 3-D object surface can be obtained for 3-D object modeling.
  English
  CiNii Articles ID：110002877248, CiNii Books ID：AN00349328
• Tracking of Moving Target Using Local Moment　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; NARA Yutaka; SATO Makoto; KAWARADA Hiroshi
  Proceedings of the Society Conference of IEICE, Volume：1995, First page：238, Last page：238, 05 Sep. 1995
  運動物体の追跡について様々な研究がなされてきたが,それらには計算量の多さ,複数物体や多量の雑音が存在する場合の処理の複雑さや精度の悪化などの問題がある.対象を追跡するためには,中心や大きさといった基本的特徴を観測できれば十分である.本報告で提案する局所モーメントは,画像の局所的な領域を定める視点・視野の概念を導入し,その領域のモーメントを計算するものである.他物体や多くの雑音がある入力画像でも対象のみの特徴を観測でき,計算量も少ないといった特徴がある.また,障害物接近の有無を判別し,対立モデルの選択を行ない,対象を安定に追跡することが可能である.
  The Institute of Electronics, Information and Communication Engineers, Japanese
  CiNii Articles ID：110003354226, CiNii Books ID：AN10489017
• Optimal Control System of Viewpoint and Visual Field on Object Tracking　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; NAKAI Satoru; SATO Makoto; KAWARADA Hiroshi
  Technical report of IEICE. HIP, Volume：95, Number：167, First page：1, Last page：6, 21 Jul. 1995
  This report discusses an object tracking system using focus of attention. By setting a viewpoint close to a target object, and choosing a breadth of visual field to certain area, complexity of tracking task can be reduced, and robustness of tracking may increased. In our approach, visual field is chosen to be the optimal while tracking. The size and the position of the object is estimated using model of image including the target and noise, and observation of image accompanied by focus of attention is expressed by inner product between image and a set of functions consisting of Gaussian function and its partial derivatives. Optimality of visual field is evaluated by error variance of estimated object position, based on minimum-variance estimate. A tracking example by real scene is also reported.
  The Institute of Electronics, Information and Communication Engineers, Japanese
  CiNii Articles ID：110003272243, CiNii Books ID：AN10487237
• Dynamic Search for Gaussian Segmeñtation　　　　　　　　　　　　　　　
  Arai Satoshi; Ido Shun; Takamatsu Ryo; Sato Makoto
  IPSJ SIG Notes, Volume：1995, Number：43, First page：1, Last page：8, 18 May 1995
  In this paper, a new method for extracting regions called Gaussian Segmentation is proposed. The basic idea of which is to extract regions containing locally concentrated stimuli. The visual system of human being can extract an object from the image even if no prior information about the object is available. In this research, Gaussian Segmentation is formalized as a problem to minimize an estimating function locally. And we provide two kinds of method, Local Searching and Dynamic searching, to seek a local solution of the estimating function in parameter space. Finally, the availability of this method is shown by experiments using a functional image and a real image.
  Information Processing Society of Japan (IPSJ), Japanese
  ISSN：0919-6072, CiNii Articles ID：110002930291, CiNii Books ID：AA11131797
• A Study on Local Extraction of Stimulus Pattern in Images　　　　　　　　　　　　　　　
  ARAI Satoshi; TAKAMATSU Ryo; SATO Makoto; KAWARADA Hiroshi
  Proceedings of the IEICE General Conference, Volume：1995, Number：2, First page：228, Last page：228, 27 Mar. 1995
  人間は画像を認識する際、領域の位置・形・大きさを巧みに変化させながら、対象を様々な尺度で切り出している。これは入力画像において、刺激が局所的に集中するような領域を抽出する機能によって実現されている、と考えられる。また、より人間らしさを求めるコンピュータビジョンの流れにおいても、刺激に対して"注意を向ける"ような機能が今後必要になっていくものと予想される。本研究ではこのような人間の視覚情報処理に近い切り出しを実現するための手法として、Gaussian Segmentationを提案する。
  The Institute of Electronics, Information and Communication Engineers, Japanese
  CiNii Articles ID：110003242219, CiNii Books ID：AN10471452
• A Study on Optimal Viewpoint and Visual Field based on Mathematical Model　　　　　　　　　　　　　　　
  NAKAI Satoru; TAKAMATSU Ryo; SATO Makoto; KAWAHARADA Hiroshi
  Proceedings of the IEICE General Conference, Volume：1995, Number：2, First page：374, Last page：374, 27 Mar. 1995
  動物は対象物体の位置や大きさに関する事前の情報を利用して,対象物体をより正確に発見・追従するような最適な視点・視野を決定する機構を持っていると考えられる.本研究では物体の認識を物体の属性を記述するパラメータの推定問題として扱い数理的なモデルの構築を試みる.最適な視点・視野の決定問題は推定誤差を最小化する観点システムを構築する問題として定式化される.
  The Institute of Electronics, Information and Communication Engineers, Japanese
  CiNii Articles ID：110003242365, CiNii Books ID：AN10471452
• A Region Extraction Method Based on Gaussian Segmentation　　　　　　　　　　　　　　　
  Arai Satoshi; Takamatsu Ryo; Sato Makoto; Kawarada Hiroshi
  IEICE technical report. Pattern recognition and understanding, Volume：94, Number：340, First page：17, Last page：22, 18 Nov. 1994
  The image recognition requires the segmentation that extracts the subjests efficiently.We propose a new segmentation method with two dimensional general Gaussian functions in this paper.It can be considered an optimizing problem which extracts a local region suited to Gaussian functions from the input stimulus.We formulate an estimating function,lead necessary conditions for oprimizing, and make an algorithm for simulations.We verify our method by a basic experimentation.
  The Institute of Electronics, Information and Communication Engineers, Japanese
  CiNii Articles ID：110003299785, CiNii Books ID：AN10013232
• A new character segmentation method for handwritten documents based on differential structure of blurred document image　　　　　　　　　　　　　　　
  Nako Kazuyuki; Takamatsu Ryo; Sato Makoto; Kawarada Hiroshi
  IEICE technical report. Pattern recognition and understanding, First page：PRU93, Last page：131, 1994
  In this paper,we propose a new character segmentation based on a hill-valley structure of blurred document images.In general,any part of charaters usually contains many stroke segments;while backgrounds or space between characters contain weaker stroke densities.Since a grey scale image obtained from blurring the image by a Gaussian kernel can represent a variation of stroke densities of charaters,we can estimated the position of all characters in the image by using infomation from their stroke densities.As an experiment,we do a segmention of characters of an address in postal cards to clarify the validity of our technique.
  The Institute of Electronics, Information and Communication Engineers, Japanese
  CiNii Articles ID：110003299829, CiNii Books ID：AN10013232

• ストーリーテリングの習熟過程における命題構造の変化 (思考と言語)　　　　　　　　　　　　　　　
  渡辺 知希; 菊池 英明; 高松 亮; 小磯 花絵
  Dec. 2016
  Japanese
• Multiscale image analysis through the surface-shape operater　　　　　　　　　　　　　　　
  共著
  2000, [International conference]
  English
• 頭部姿勢推定による空間ブラウザの構成(〔ヒューマンインフォメーション研究会 ネットワーク映像メディア研究会〕合同)　　　　　　　　　　　　　　　
  谷口 知隆; 高松 亮; 佐藤 誠
  Sep. 1998
  Japanese
• Controlling Space Browser by Head Posture　　　　　　　　　　　　　　　
  TANIGUCHI Tomotaka; TAKAMATSU Ryo; SATO Makoto
  ITE Technical Report, Jun. 1998
  Japanese
  In this paper, we name the action of browsing 3D virtual space in human scale virtual environment using scrolling technique "space browsing", and propose space browsing interface system based on estimating user's head posture. Head posture estimation is carried out in real-time by processing image of an oval marker put on user's head. Because the oval marker is attached on a cap, a user can put on the marker easily and naturally by just wearing the cap. Our method gives natural feeling to a user because the direction of scrolling has good consistency to user's direction of attention. We mad...
• An Assistnce Mechanism to Browse Virtual Space Using Head Posture　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; TANIGUCHI Tomotaka; SATO Makoto
  ITE Technical Report, May 1998
  Japanese
  In this paper, we name the action of browsing 3D virtual space in human scale virtual environment using scrolling technique "space browsing", and propose space browsing interface system based on estimating user's head posture. Head posture estimation is carried out in real-time by processing image of an oval marker put on user's head. Because the oval marker is attached on a cap, a user can put on the marker easily and naturally by just wearing the cap. Our method gives natural feeling to a user because the direction of scrolling has good consistency to user's direction of attention. We mad...
• Space Browsing Interface Based on Head Posture Information　　　　　　　　　　　　　　　
  TANIGUCHI Tomotaka; TAKAMATSU Ryo; SATO Makoto
  Technical report of IEICE. PRMU, Jan. 1998
  Japanese
  In this paper, we name the action of browsing 3D virtual space in human scale virtual environment using scrolling technique "space browsing", and propose space browsing interface system based on estimating user's head posture. Head posture estimation is carried out by processing image of an oval marker put on user's head. Because the oval marker is attached on a cap, a user can put on the marker easily and naturally by just wearing the cap. Our method gives natural feeling to a user because the direction of scrolling has good consistency to user's direction of attention.
• Image Coding Scheme for Early Understandings Based on Priority of Sub-blocks　　　　　　　　　　　　　　　
  IDO Shun; TAKAMATSU Ryo; SATO Makoto
  IEICE technical report. Image engineering, Jul. 1997
  Japanese
  We propose a new coding scheme of still image for retrieving databases by means of expanding the Progressive JPEG coding. The scheme can display the image more efficiently than the conventional scheme such as the Progressive JPEG coding. At first, we get information about stimuli in the image, which is important for early stage in the human visual system. And then, we set the order of priority of sub-blocks in order to give priority to the sub-blocks which have remarkable information in the image. The experimental results of applying this scheme to the real image of persons are given, and t...
• Head Posture Estimation by Moment Feature　　　　　　　　　　　　　　　
  Takamatsu Ryo; Sato Makoto
  Proceedings of the ... ITE annual convention, Jul. 1997
  Japanese
  A method to estimate viewpoint of a user from the image of singular marker put on the head is proposed. Using the moment features which represents non-local feature of image, such as the gravity center or the breadth, our method estimate viewpoint of a user by three layered neural network. Experimental result shows that our method has good performance.
• Head Posture Estimation Method Based on Moment Feature　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; SATO Makoto
  IPSJ SIG Notes. CVIM, May 1997
  Japanese
  In this paper, we propose a method to estimate posture of human head, in which the position and the direction of the head are estimated from the image of singular marker put on the head of a user. As the feature, moments of image up to second degree are used. Posture is estimated by estimation system which consists of observation model based on local analysis and compensation function. Our method has the following characteristics. Firstly, it does not constrain user. Secondly, a user only have to put singular marker on the top of the head, and thus easily puts on and takes off the marker. T...
• Pointing Device Based on Tracking and Recognition of Hand by Local Moment　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; SATO Makoto; KAWARADA Hiroshi
  Proceedings of the Society Conference of IEICE, Sep. 1996
  Japanese
  手指にマーカ等を付加するなどの制約のほとんどない,自然で親しみやすいポインティングデバイスのための手指形状画像の追跡・認識手法を提案する.局所的な領域のモーメント特徴による掌の追跡と手指形状の認識を行なうことで,リアルタイム性とロバスト性の両立を図る.
• Tracking with Focus of Attention by the Optimal Viewpoint and Visual Field　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; KAWARADA Hiroshi; SATO Makoto
  Technical report of IEICE. PRMU, Sep. 1996
  English
  This paper proposes the tracking system based on the local moment, in which the idea of the viewpoint and the visual field corresponding to local area of an image is introduced. Using local moment with the optimal viewpoint and visual field, the system estimates the target based on two models of the scene (the alternative models): the one assuming only the target object and the other assuming the target and the obstacle. The system can switch from one model to another by the decision criterion and tracks the target by controlling the parameters of the local moment in accordance with estimated values. By the two experiments the validity of the estimation by the alternative models is shown.
• Formation of Mathematical Model for Object Tracking Using Local Moment　　　　　　　　　　　　　　　
  Takamatsu Ryo; Nara Yutaka; Sato Makoto; Kawarada Hiroshi
  Proceedings of the IEICE General Conference, Mar. 1996
  Japanese
  動画像中の運動物体の追跡手法の多くは,濃淡値の2次微分のような局所的な特徴を用いて対象物体を抽出する過程を含んでいる.しかし,それらの特徴は計算量が多く,複数物体や多量の雑音が存在する場合に処理が複雑になり精度も悪化するといった問題がある.タスクが対象の追跡に限定されている場合には,中心や大きさといった基本的特徴を観測できれば十分である.我々は,そのような特徴を観測する手法として,局所モーメントを提案した.これは,次式のように,部分的な領域を定める重み付けを画像に施し,その領域のモーメントを計算するものである.m_=∬x^iy^jG(x,y,τ)f(x,y)dxdy.G(x-ζ,y-η,τ)=1/<4πτ>exp[-<(x-ζ)^2+(y-η)^2>/<4τ>]ここで,重みGの中心位置(ζ,η)を視点,広がりτを視野と呼ぶ.なお,以降の議論ではm_の核関数部分x^iy^jG(x,y,τ)(i+j≤2)を正規直交化した計6種類の正規直交化モーメントm_i(i=0,1,2,3,4,5)を用いる.局所モーメントには計算量が少なく,雑音に対して頑健であるという利点があるが,対象物体が明示的に抽出されないため,視野に侵入した障害物を直接検知することが困難であるという問題点がある.本稿では「対立モデル」を提案する.対立モデルは,視野内に対象物体のみがあるというモデル...
• A Method of Dynamic Search of Gaussian Segmentation　　　　　　　　　　　　　　　
  Ido Shun; Arai Satoshi; Takamatsu Ryo; Sato Makoto
  Proceedings of the IEICE General Conference, Mar. 1996
  Japanese
  筆者らは,人間の視覚情報処理に近い切り出し機能を実現するための手法としてガウス領域切り出しを提案した.これは,刺激画像中で刺激が局部的に集中する(ガウス関数状に分布している)部分を,次式で示すような,中心の位置r,広がりτTをもつ2次元ガウス関数で切り出すものである.g(x-r,τT)=1/<4πτ>exp{-1/<4τ>(x-r)^tT^<-1>(x-r)}(1)ここで,x=(x y)r=(ζη)T=(τ_x τ_c τ_c τ_y)但し,|T|=τ_xτ_y-τ^2_c=1とする.入力刺激f(x)とガウス関数との適合度は,次式のような2乗差の積分形で定式化できる.J=∬{f(x)-Ag(x-r,τT)}^2dx(2)ガウス領域切り出しは,この適合度の評価式Jを極小化するようなパラメータの組(A,r,τ,T)を得るという最適化問題であり,7つの初期パラメータが一組与えられたとき,繰り返し演算によって解を得ることができる.本稿では,解を一つ得た後も逐次的に切り出し領域を得ることができる手法として,動的探索法を提案する.
• Tracking of Moving Target Using Local Moment　　　　　　　　　　　　　　　
  TAKAMATSU Ryo; NARA Yutaka; SATO Makoto; KAWARADA Hiroshi
  Proceedings of the Society Conference of IEICE, Sep. 1995
  Japanese
  運動物体の追跡について様々な研究がなされてきたが,それらには計算量の多さ,複数物体や多量の雑音が存在する場合の処理の複雑さや精度の悪化などの問題がある.対象を追跡するためには,中心や大きさといった基本的特徴を観測できれば十分である.本報告で提案する局所モーメントは,画像の局所的な領域を定める視点・視野の概念を導入し,その領域のモーメントを計算するものである.他物体や多くの雑音がある入力画像でも対象のみの特徴を観測でき,計算量も少ないといった特徴がある.また,障害物接近の有無を判別し,対立モデルの選択を行ない,対象を安定に追跡することが可能である.
• Optimal Control System of Viewpoint and Visual Field on Object Tracking　　　　　　　　　　　　　　　
  Takamatsu Ryo; Nakai Satoru; Sato Makoto; Kawarada Hiroshi
  Technical report of IEICE. HIP, Jul. 1995
  Japanese
  This report discusses an object tracking system using focus of attention. By setting a viewpoint close to a target object, and choosing a breadth of visual field to certain area, complexity of tracking task can be reduced, and robustness of tracking may increased. In our approach, visual field is chosen to be the optimal while tracking. The size and the position of the object is estimated using model of image including the target and noise, and observation of image accompanied by focus of attention is expressed by inner product between image and a set of functions consisting of Gaussian fun...
• Dynamic Search for Gaussian Segmentation　　　　　　　　　　　　　　　
  Arai Satoshi; Ido Shun; Takamatsu Ryo; Sato Makoto
  IPSJ SIG Notes, May 1995
  Japanese
  In this paper, a new method for extracting regions called Gaussian Segmentation is proposed. The basic idea of which is to extract regions containing locally concentrated stimuli. The visual system of human being can extract an object from the image even if no prior information about the object is available. In this research, Gaussian Segmentation is formalized as a problem to minimize an estimating function locally. And we provide two kinds of method, Local Searching and Dynamic searching, to seek a local solution of the estimating function in parameter space. Finally, the availability of ...
• A Study on Optimal Viewpoint and Visual Field based on Mathematical Model　　　　　　　　　　　　　　　
  NAKAI Satoru; TAKAMATSU Ryo; SATO Makoto; KAWAHARADA Hiroshi
  Proceedings of the IEICE General Conference, Mar. 1995
  Japanese
  動物は対象物体の位置や大きさに関する事前の情報を利用して,対象物体をより正確に発見・追従するような最適な視点・視野を決定する機構を持っていると考えられる.本研究では物体の認識を物体の属性を記述するパラメータの推定問題として扱い数理的なモデルの構築を試みる.最適な視点・視野の決定問題は推定誤差を最小化する観点システムを構築する問題として定式化される.
• A Study on Local Extraction of Stimulus Pattern in Images　　　　　　　　　　　　　　　
  ARAI Satoshi; TAKAMATSU Ryo; SATO Makoto; KAWARADA Hiroshi
  Proceedings of the IEICE General Conference, Mar. 1995
  Japanese
  人間は画像を認識する際、領域の位置・形・大きさを巧みに変化させながら、対象を様々な尺度で切り出している。これは入力画像において、刺激が局所的に集中するような領域を抽出する機能によって実現されている、と考えられる。また、より人間らしさを求めるコンピュータビジョンの流れにおいても、刺激に対して"注意を向ける"ような機能が今後必要になっていくものと予想される。本研究ではこのような人間の視覚情報処理に近い切り出しを実現するための手法として、Gaussian Segmentationを提案する。
• A Region Extraction Method Based on Gaussian Segmentation　　　　　　　　　　　　　　　
  Arai Satoshi; Takamatsu Ryo; Sato Makoto; Kawarada Hiroshi
  IEICE technical report. Pattern recognition and understanding, Nov. 1994
  Japanese
  The image recognition requires the segmentation that extracts the subjests efficiently.We propose a new segmentation method with two dimensional general Gaussian functions in this paper.It can be considered an optimizing problem which extracts a local region suited to Gaussian functions from the input stimulus.We formulate an estimating function,lead necessary conditions for oprimizing, and make an algorithm for simulations.We verify our method by a basic experimentation.
• An Optimization Model of Viewpoint and Visual Field for the Detection of an Appearing Object　　　　　　　　　　　　　　　
  Takamatsu Ryo; Nakai Satoru; Sato Makoto; Kawarada Hiroshi
  テレビジョン学会年次大会講演予稿集, Jul. 1993
  Japanese
  In this paper, we investigate the mathematical model of detection of an object by visual system. We treat the problem as the estimation of position of objects. Given the probabilistic distribution of position of objects, the proposed model controls the viewpoint and visual field so that estimation error is minimized.

• Apr. 2023 - Present
  Language as Media, Saitama University, Webスクレイピングを用いて得たデータを元に、統計データ解析向けの言語であるRを用いたテキストマイニングの基本的な手法（ワードクラウドや、単語頻度の類似性に基くクラスタリングなど)による文書の分類などが行なう手法の習得を行います。, Postgraduate courses
• Apr. 2016 - Present
  Language as Media, Saitama University, 経済現象を含め、人間同士が相互にやり取りをする際の重要な要素である「ことば」を、コンピュータを用いて分析するための基本的なスキルを実例を通して身につけます。具体的には、形態素解析に基く品詞率や、文節係り受け解析による文の定量的特徴の計算を行なうことで、日本語の文体を定量的に測る手法を身につけます。また、そのために必要な日本語の基本的事項として形態論と統語論(単文の文法)の基礎もあわせて学びます。, Postgraduate courses
• Apr. 2008 - Present
  Seminar, Saitama University, 逐次的な言葉の伝達現象や話し言葉と書き言葉の差異に関して，1)どのような量に一定の傾向が見られるか，2)そのような傾向が生じるメカニズムは何か、3)その傾向が思考の整序やコミュニケーションに与える影響は何か、という観点から何らかの新たな知見を得た上で、それを学術的著述の形でまとめ、その内容を明確かつ論理的に発表することを通じて、研究に対する応用・発展的な思考、プレゼンテーションの手法、客観的な文章を書く能力を身につける。, Undergraduate special subjects
• Apr. 2007 - Present
  Computational Systems, Saitama University, 一人の人間やその集団によってなされる情報処理の背後にはある種の計算原理が隠れている．計算原理は情報処理の結果生じた事物のさまざまな側面に反映されているはずである．そのような原理をとらえるにはどうしたらよいだろうか．本講義ではそのような情報処理のうち最も身近な例として，人間の言葉(言語)に注目する．言葉が用いられる場面(書き言葉/話し言葉，新聞,小説,演説,会話,etc.)や，どのような人が言葉を使っているかによって，語彙(使われている語の種類)，統語(文法的な構造)，意味それぞれのレベルでどのような共通点や違いが生じるかを，コンピュータを使って演習形式で分析していく．分析は主に統計的な量として言葉の様々な側面をとらえる方法で行なう．, Undergraduate special subjects
• Oct. 1998 - Mar. 2006
  Computer Literacy, Saitama University, 本講義はコンピュータとインターネットに関する基礎的リテラシーについての講義です。文化系の受講者を対象に、デジタル情報、コンピュータ、インターネットの基本的な原理、情報セキュリティ、ネットにおけるマナー、情報化が社会に与えるさまざまな影響などをわかりやすく解説します。また、ワープロソフト、表計算ソフト、プレゼンテーションソフトの基本的な使い方についても学びます。, Undergraduate liberal arts

• 2024
• 2024

• IPSJ
• JSAI
• IEEE
• JCSS
• IEICE

• インタラクティブ性の有無を考慮した話し言葉・書き言葉間の変換のための基礎的研究　　　　　　　　　　　　　　　
  2013 - 2016
  Principal investigator
  Grant amount(Total)：4680000
  Competitive research funding
• A Study on Object Tracking by Hierarchical Computational Model　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), 1997 - 1998
  SATO Makoto; TAKAMATSU Ryo; KAWARADA Hiroshi, TOKYO INSTITUTE OF TECHNOLOGY
  Grant amount(Total)：3300000, Direct funding：3300000
  There are two indispensable features to realize vision-based human interface ; robustness under general environment and real time ability under restricted hardware resource. Conventionally, those features are thought to be trade-off. However, visual system of animals can achieve simple tasks sufficient for constructing human interface with restricted resource and considerable robustness. We hypothesize that the reasons why visual system of animal is successful in alleviating those trade-offs are to use global feature of restricted area and layered structure of sensory system.
  The first year of the research plan, we constructed visual models of three layers of tasks ; discovering, tracking and recognizing thetarget.
  As the global feature of restricted area, local moment, moment feature of image weighted by Gaussian function, is introduced. Since the local moment has the capability to suppress unnecessary information outside of the area, it can be applied effectively to an image containing much noises and obstacle objects. Comparing with the ordinary moment, computational cost of the local moment is fairly small and can be easily applied to real-time system.
  This year, we developed two applications of those models. The first one is a pointing device based on tracking and recognizing user's hand. Without putting any marker-like reference points on a hand, a user can point at any position on the screen by moving the hand, and can manipulate objects on the screen in several ways. Another application is head posture estimation method using an oval marker attached on user's head. As the feature, moments of image up tosecond degree are used.
  Grant number：09650403
• Development of virtual clay modeling system for creative 3D design　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), 1997 - 1998
  SATO Makoto; HAYASHI Youivhi; ISHII Masahiro; TAKAMATSU Ryo, TOKYO INSTITUTE OF TECHNOLOGY
  Grant amount(Total)：8400000, Direct funding：8400000
  Many input devices for computers have been proposed, keyboards are used for symbolic information and mice for two dimensional one.
  The effect of input in a virtual environment must be appealed to the sense organs because humans perceive the outside world from the five senses in real world.
  Important perceptual information while handling 3D objects is obtained from vision, haptic sensation, auditory sense, etc.
  The handling of three dimensional(3D) objects in a virtual environment requires an efficient input device which can handle these virtual objects as humans handle objects in real world.
  In this study, we proposed a 3D spatial interface device using strings, pulleys, and motors.
  The position of an operator's fingertip is measured by the lengths of the strings that are connected with a finger cap.
  The strings tensed by motors make force sensations.
  The operator can easily wear the cap, and move his/her fingers without restraint.
  We constructed a virtual environment for pick-and-place tasks with the device and 3D computer graphics.
  The operator could both see and feel the results of his/her hand motions in a very natural way.
  Grant number：09555115
• 進化論的階層性に基づくロボットビジョンの構築　　　　　　　　　　　　　　　
  1995 - 1995
  Principal investigator
  Grant amount(Total)：900000
  Competitive research funding
• Research on the Development of Creative Shape Design System by 3-D Virtual Work Space　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Developmental Scientific Research (B), 1994 - 1995
  SATO Makoto; HAYASHI Youichi; TAKAMATSU Ryo; KAWARADA Hiroshi, Tokyo Institute of Technologh
  Grant amount(Total)：7700000, Direct funding：7700000
  Two-handed interactions are efficient to design a three dimensional (3D) object, hence a two-handed spatial interface device must facilitate such a design process in a virtual environment. In order to realize a virtual environment in which an operator can use his/her hands efficiently, it is necessary to implement a virtual reality system that is suitable to human's ability of sensory integration. We ca unconsciously integrate many kinds of sensory information, e.g.visual and kinesthetic sensation.
  This project was about constructing a virtual work space for performing any tasks by two-handed-input. We use a three dimension spatial interface device that allows users to handle virtual objects directly by free hands and be feel-able some physical properties of virt object : for example, weight of virtual objects when they are held, force that is the reaction from virtual objects when users touch them force from a collision of two virtual objects which users can feel in some operations such as placing one virtual object onto another one.
  We have shown some evidences about force feedback sensation, and perceptual integration between kinesthetic and visual sensat that can encourage users to accomplish any tasks by cooperation between both hands in natural manner.
  Grant number：06555106
• 計算論的サブサンプションモデルによるコンピュータビジョン　　　　　　　　　　　　　　　
  1993 - 1994
  Grant amount(Total)：7500000
  Competitive research funding
• 視覚のサブサンプション的構造の数理的モデル　　　　　　　　　　　　　　　
  1993 - 1993
  Principal investigator
  Grant amount(Total)：800000
  Competitive research funding
• 遺伝的アルゴリズムによる言語と知的好奇心を持つ種の進化システム　　　　　　　　　　　　　　　
  1992 - 1992
  Principal investigator
  Grant amount(Total)：800000
  Competitive research funding
• 視覚のサブサンプション的構造の数理的モデル　　　　　　　　　　　　　　　
  1992 - 1992
  Principal investigator
  Competitive research funding

• 伝言ゲームは何を伝えないか　　　　　　　　　　　　　　　
  contribution
  09 Jun. 2023
• うわさ話はなぜすたれるか　　　　　　　　　　　　　　　
  contribution
  10 Nov. 2017
• ことばの二つの役割　　　　　　　　　　　　　　　
  contribution
  12 Dec. 2014
• 話し言葉と書き言葉　　　　　　　　　　　　　　　
  contribution
  2010