A bandwidth and memory efficient MPEG-4 shape encoder

Authors:
Kun-Bin Lee;Nelson Yen-Chung Chang;Hao-Yun Chin;Hui-Cheng Hsu;Chein-Wei Jen
Affiliations:
National Chiao Tung University, HsinChu, Taiwan, R.O.C.;National Chiao Tung University, HsinChu, Taiwan, R.O.C.;National Chiao Tung University, HsinChu, Taiwan, R.O.C.;National Chiao Tung University, HsinChu, Taiwan, R.O.C.;National Chiao Tung University, HsinChu, Taiwan, R.O.C.
Venue:
Proceedings of the 2004 Asia and South Pacific Design Automation Conference
Year:
2004

Citing 2
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MPEG-4 standardized methods for the compression of arbitrarily shaped video objects

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A multisymbol context-based arithmetic coding architecture for MPEG-4 shape coding

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Abstract

We have developed a shape encoder hardware for MPEG-4 video coding. On the one hand, the alpha component is compressed and therefore, the size and memory access of alpha frame memory can be reduced to 50% and 56.25% respectively. On the other hand, an efficient data transfer scheme combining the run length coding and addressing mode can reduce average data transfer time to 9.39% and accelerate the shape encoding process. The shape encoder can support MPEG-4 Main Profile at Level 4 in real-time. In addition, verification and testing methods are also considered.