Ming-Yan Chan

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A novel technique is proposed to reduce the computational complexity of discrete cosine transform (DCT)-based video encoders. The proposed method merges the DCT and quantization into a single procedure, which is referred to as the novel quantized DCT (NQDCT), such that the DCT output does not need to be explicitly quantized. Thus, a lot of computations(More)
The paper discusses a novel algorithm (new quantized DCT - NQDCT) that combines the DCT with the quantizer to achieve energy scalability in a DCT based multimedia codec. A thorough analysis of the algorithm is presented. Simulation results show that a 15% reduction in computational energy can be obtained in an implementation of an MPEG coder over a wide(More)
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