Joint 3-D dynamic resolution conversion with rate-distortion for video coding

Authors:
Lung-Jen Wang
Affiliations:
Dept. of Information Technology, National Pingtung Institute of Commerce, Pingtung, Taiwan, R.O.C.
Venue:
SPPR'07 Proceedings of the Fourth conference on IASTED International Conference: Signal Processing, Pattern Recognition, and Applications
Year:
2007

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Abstract

The dynamic resolution conversion (DRC) method is already part of the MPEG-4 standard. In this paper, it is shown that a new three-dimensional (3-D) DRC method can be used with the MPEG-4 standard to improve the MPEG-4 DRC for low bit-rate video coding. In addition, the proposed 3-D DRC method substantially reduces the complexity of computation and the needed memory requirements. Furthermore, a novel optimal algorithm is utilized to solve the rate-distortion problem that joints the 3-D DRC method and quantization parameter for video coding. Experimental result shows that the proposed MPEG-4 with 3-D DRC method obtains a better subjective quality and an objective PSNR of the reconstructed frame than the standard MPEG-4 and the MPEG-4 DRC algorithm.