A scalable video compression technique based on wavelet transform and MPEG coding
Pao‐Chi Chang, Ta‐Te Lu · IEEE Transactions on Consumer Electronics · 1999
We present a scalable coding scheme based on the discrete wavelet transform (DWT) and MPEG coding for video applications. It utilizes the hierarchical pyramid structure that provides multiple resolutions. The DWT decomposes the image into several bands. In each band, a fixed-size motion compensated MPEG coder with custom-designed quantization tables and scanning direction is employed. This scheme has the advantages of reusing the widely available MPEG hardware and software as well as relieving the limitation of the image size imposed by the MPEG hardware technology. The simulation results show that the DWT-MPEG coding method improves the image quality over ordinary MPEG coding by 0.3/spl sim/1.5 dB.