Wavelet video coding using motionvectors estimated simultaneously at the transmitter and receiver side from the transmitted image data have been reported to have good compression capabilities, comparable to the non-s...
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ISBN:
(纸本)0819437034
Wavelet video coding using motionvectors estimated simultaneously at the transmitter and receiver side from the transmitted image data have been reported to have good compression capabilities, comparable to the non-scalable version of H.263. When scalability is required, the comparison turns even more in favour of the wavelet coding scheme. This paper shows that it is possible to reduce the bit-rate further in backward motion estimation schemes by using the certainty of each estimated motionvector. In this paper we report a lowering in bit rate of about 20 % by using the motionvectorcertainty as background information in the entropy coding / decoding process. We also propose a low-complexity algorithm which does not require motion estimation / compensation, but uses the motionvectorcertainty.
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