An efficient algorithm for optimizing DCT quantization.
basic_science · Level V
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- Record sourced from PubMed, PMID 18255393.
- Also identified by DOI 10.1109/83.821739.
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Abstract
We describe the RD-OPT algorithm for DCT quantization optimization, which can be used as an efficient tool for near-optimal rate control in DCT-based compression techniques, such as JPEG and MPEG. RD-OPT measures DCT coefficient statistics for the given image data to construct rate/distortion-specific quantization tables with nearly optimal tradeoffs.