A fast block-motion-estimation algorithm, based on progressive partial norm matching, is proposed. This fast algorithm obtains the best estimate of motion vectors with a significantly reduced computational load by suc...
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A fast block-motion-estimation algorithm, based on progressive partial norm matching, is proposed. This fast algorithm obtains the best estimate of motion vectors with a significantly reduced computational load by successively exploiting the partial norms Of the variable partitioned subblocks and thus effectively eliminating invalid search points. Simulation results demonstrate that computation time has been reduced dramatically, while the performance of the proposed algorithm is the same as that using an exhaustive search.
We have developed a low-power, high-performance MPEG-4 codec LSI for mobile video applications. This codec LSI is capable of up to CIF 30-fps encoding, making it suitable for various visual applications. The measured ...
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We have developed a low-power, high-performance MPEG-4 codec LSI for mobile video applications. This codec LSI is capable of up to CIF 30-fps encoding, making it suitable for various visual applications. The measured power consumption of the codec core was 9 mW for QCIF 15-fps codec operation and 38 mW for CIF 30-fps encoding. To provide an error-robust MPEG-4 codec, we implemented an error-resilience function in the LSI. We describe the techniques that have enabled low power consumption and high performance and discuss our test results.
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