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Estimating Unobserved Motion of a Ball by Acquiring Its Physical Model from Image Sequences
Naoki OKADA Tomohiro YABUUCHI Takuya FUNATOMI Koh KAKUSHO Michihiko MINOH
D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2008/12/01
Online ISSN: 1881-0225
Print ISSN: 1880-4535
Type of Manuscript: PAPER
unobserved motion estimation, physical laws of motion, motion model, ball,
Full Text(in Japanese): PDF(474.3KB)
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In conventional methods of object tracking, the position and posture of the object are estimated from their appearances in the image. However, those appearances cannot be obtained when the object is occluded by others. Moreover, the appearances that directly describe the posture of a spherical object cannot be obtained as image features though a ball is often tracked in a sportscast. In this article, we introduce a motion model, which describes how the position and posture change with respect to time by physical laws of motion for estimating the position or posture unobserved in the image sequence from observed ones.