Motion compensated multiresolution transmission of HD video using multistage quantizers
John W. Woods, Thumpudi Naveen · IEEE International Conference on Acoustics Speech and Signal Processing · 1993
Multiresolution (MR) transmission of compressed video is performed using subbands. The subband decomposition is used for both hierarchical estimation of the motion and encoding of the motion-compensated error frame. With this approach, the video at a given resolution embeds lower-resolution video. Frequency roll-off of higher-frequency subbands is used to obtain visually pleasing low-resolution videos at low-bit rates. It is well known that the transmission of higher-resolution video requires finely quantized low-resolution video. The necessary refinement of the coarsely quantized low-resolution video is made by using multistage quantization. A novel technique is introduced to improve the performance of conventional multistage quantization. Simulation of a three-resolution MR coding system were made on a monochrome MIT test HD (high-definition) video, which is 30 frames long at 30 frames/s with 1600*960 8-bit pixels per frame.>