AlignmentofNonOverlappingSequences

AlignmentofNonOverlappingSequences - Alignment of...

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Alignment of Non- Overlapping Sequences Y. Caspi and M. Irani Presented by Yinghua Hu
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Goal z Align temporally and spatially two non- overlapping image sequences Example sequence 1
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Example sequence 2 Aligned Sequence
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Background z Main approaches z Directly match image intensities z Match extracted local image features z Motion based (trajectory) z The similarity between images z Can two sequences without any spatial overlap be aligned? Homography z For the corresponding feature points p and p’ between temporally corresponding frames I i and I j ’, there is an inter-camera homography H which leads to Hp p'
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Problem formulation Recover the H (spatial alignment) and t (temporal alignment) directly from T 1 ,…T n and T 1 ’, … T m ’. Perspective Projection (Origin at image center) Image plane 3D world Center of projection f (X,Y,Z) I m a g e p l n 3 D w o r ld C t f je c i ( X ,Y ,Z )
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Recover Spatial Alignment z Assume t is known and recover H. z
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This note was uploaded on 06/13/2011 for the course CAP 6412 taught by Professor Staff during the Spring '08 term at University of Central Florida.

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AlignmentofNonOverlappingSequences - Alignment of...

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