Hybrid Fractal/dct Coding of Video
نویسنده
چکیده
In this paper we introduce two techniques that can be used together to improve video coding performance. Firstly, block matching motion estimation with spatial transformation (BMST) is used to increase motion compression eeciency, and then motion compensated prediction (MCP) errors are encoded using a hybrid Fractal/DCT scheme. MCP error blocks are classiied according to their energy content and they should be coded with a low bit rate. Many of them can be DCT coded, but for those which require a large bit rate to achieve a certain quality, Fractal coding can be eeciently used considering the bit rate constraint. This hybrid scheme speeds up the decoding process, reduces the bit rate, and due the eeciency of motion compensation only a few MCP error images are coded.
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