November 2014
Intermediate to advanced
236 pages
7h 4m
English
book
Image and Video Compression
by Madhuri A. Joshi, Mehul S. Raval, Yogesh H. Dandawate, Kalyani R. Joshi, Shilpa P. Metkar
Content preview from Image and Video Compression
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126 Image and Video Compression
step. The CSA is presented in Figure6.10. The initial step size is half of maxi-
mum motion displacement w. The step size is halved at each stage until the
step size turns out to be one. At the nal stage, however, the endpoints of a
Greek cross (+) are used to search areas around the top-right and bottom-left
corners of the previous stage. And a saltire cross (x) is used to search areas
around the top-left and bottom-right corners of the previous stage.
The CSA requires [5 + 4 ⎡log
2
w⎤] comparisons where w is the largest
allowed displacement. The algorithm has a low computational complexity. It
is, however, not ...
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