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An efficient algorithm for optimizing DCT quantization

delete2000-01-01
delete36
PRE
AI
R
Ratnakar, V
M
Miron Livny
DOI：10.1109/83.821739delete
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Abstract

Abstract

En 中文
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.
Keywords:
discrete cosine transform
JPEG
lossy image compression
quantization
rate control
rate-distortion tradeoff
thresholding
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Journal

IEEE Transactions on Image Processing cover
IEEE Transactions on Image Processing
IF:
13.7
Papers:
1.0W
Citations:
8.4W

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