著者

山内結子 加藤大一郎 野口 英男 阿部 一雄 榎並 和雅

出版者

一般社団法人情報処理学会

雑誌

情報処理学会研究報告グラフィクスとCAD(CG) (ISSN:09196072)

巻号頁・発行日

vol.1995, no.63, pp.31-36, 1995-07-14

被引用文献数

4

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スポーツなどの生中継において、カメラの映像だけではわかりにくいボールなどの対象物の3次元位置を正確に伝えるために、三角測量の原理を用いて軌跡表示システム「ショットビュー」を開発した。操作する2台のカメラの角度と、カメラ間の距離から位置計算を行なう手法を取っており、システムに必要なカメラ角度の粘度を求めて、ゴルフボールの弾道を可視化する実験を行なった。その結果、カメラの設置位置と、表示に制限を加えることにより、ゴルフ中継への適用を可能にしたので報告する。また、放送用にリアルタイムのシステムを構築し、実験機を使用して放送した例について紹介する。This paper describes a newly developed real time locus indication system for golf ball in flight. The system, named "Shot View", detects the three dimensional position of the ball according to triangulation principles using the motion angle of two cameras to track the ball, and indicates the locus on a course layout background. The experiments conducted to ascertain its applicability to golf, and the system has been applied to long drives shots at a distant hole during several golf broadcasts.

著者

加藤 大一郎 石川 秋男 津田 貴生 福島 宏 山田 光穗

出版者

一般社団法人 映像情報メディア学会

雑誌

映像情報メディア学会誌 (ISSN:13426907)

巻号頁・発行日

vol.53, no.9, pp.1315-1324, 1999-09-20 (Released:2011-03-14)

参考文献数

9

被引用文献数

9 6

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We are studying an intelligent robot camera system that can automatically shoot images with a powerful sense of reality. To clarify the relationship between the size of a subject, shooting velocity, and position of the subject in the image, a basic experiment was conducted on the shooting of a moving subject. The following points were clarified. The subject's position in the image seems to be more closely related to the size of the subject than its velocity ; the larger the subject and the faster it is moving, the greater the values for the distribution of the subject's position. We also found that if a subject moves outside the best position in the image, its position is not corrected immediately but the shooting continues keeping the maximum velocity of positional change within about 0.20 to 0.35. We also conducted subjective image evaluation experiments using a camera control system. This has revealed that the factors in subjective evaluation of camera work may be divided into four groups representing continuation, vividness, sensitivity, and human-warmth, and that the tested subjects were liable to feel shots, taken with techniques similar to those used by cameramen were more human-like, so they gave them relatively high evaluations.