Paper
Video Coding with 3-D Dynamic Resolution Conversion and Rate-Distortion
- Authors:
- Lung-Jen Wang
- Abstract
- At low bit rates, the quality of coded video can be achieved by the dynamic resolution conversion (DRC) method for 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 algorithm to improve the MPEG-4 DRC method for low bit-rate video coding. In addition, this 3-D DRC method uses a 3-D down sampling in the encoder and a 3-D up sampling in the decoder, respectively, for the MPEG-4 algorithm. Furthermore, a novel optimal algorithm is utilized to solve the rate-distortion (R-D) problem that joints the 3-D DRC down/up sampling and adaptive quantization for video coding. Experimental result shows that the proposed MPEG-4 with 3-D DRC and adaptive quantization obtains a better subjective quality and objective PSNR of the reconstructed frame than the standard MPEG-4 and the MPEG-4 DRC algorithm.
- Keywords
- MPEG-4; Dynamic Resolution Conversion (DRC); Rate-Distortion (R-D); Video Coding
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