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High-quality DCT-based image compression using partition schemes
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DOI：10.1109/LSP.2006.879861.png)
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Abstract
En 中文
This letter presents an advanced discrete cosine transform (DCT)-based image compression method that combines advantages of several approaches. First, an image is divided into blocks of different sizes by a rate-distortion-based modified horizontal-vertical partition scheme. Statistical redundancy of quantized DCT coefficients of each image block is reduced by a bit-plane dynamical arithmetical coding with a sophisticated context modeling. Finally, a post-filtering removes blocking artifacts in decompressed images. The proposed method provides significantly better compression than JPEG and other DCT-based techniques. Moreover, it outperforms JPEG2000 and other wavelet-based image coders.
Keywords:
discrete cosine transform (DCT)
image compression
partition schemes (PS)
Journal
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9.6
Papers:
1.1W
Citations:
1.7W
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