Lecture-17 - Lecture-17 Computing Optical Flow: Lucas &...

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1 Lecture-17 Computing Optical Flow: Lucas & Kanade Global Flow Term Paper (due April 19) • Read 2 to 3 papers on one topic, and write a 3-4 page typewritten report. – Summarize the papers – Good points, bad points – Questions – New ideas • Journals – IEEE Transactions on PAMI – Computer Vision and Image Understanding – Image and Vision Computing – Int Journal of Computer Vision – Machine Vision and Applications
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2 Lucas & Kanade (Least Squares) • Optical flow eq t y x f v f u f - = + 9 9 9 1 1 1 t y x t y x f v f u f f v f u f - = + - = + M - - = 9 1 9 1 9 1 t t y y x x f f v u f f f f M M M t f Au = • Consider 3 by 3 window Lucas & Kanade t T T t T T t f A A A u f A A f 1 ) ( - = = = 2 ) ( min t yi xi f v f u f + +
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3 Lucas & Kanade 0 ) ( 0 ) ( = + + = + + yi ti yi xi xi ti yi xi f f v f u f f f v f u f 2 ) ( min t yi xi f v f u f + + Lucas & Kanade - - = - ti yi ti xi yi yi xi yi xi xi f f f f f f f f f f v u 1 2 2 - - - - - = ti yi xi f f f f f f f f f f f f f f f v u 2 2 2 2 2 1 - - = - + - = 2 2 2 2 2 2 2 2 f f f f f f f f f f f f v f f f f f f f f f f f f u
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4 Comments • Horn-Schunck and Lucas-Kanade optical method works only for small motion.
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This note was uploaded on 06/12/2011 for the course CAP 5415 taught by Professor Staff during the Fall '08 term at University of Central Florida.

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Lecture-17 - Lecture-17 Computing Optical Flow: Lucas &...

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