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Wuyun Wang

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Proceedings Article | 14 December 2021 Paper

Image compression technology based on picture complexity and blocked graded wavelet transform

Wuyun Wang, Zheng Li

Proceedings Volume 12087, 120871X (2021) https://doi.org/10.1117/12.2624717

KEYWORDS: Image compression, Wavelets, Wavelet transforms, Image quality, Image segmentation, Image processing

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In order to make a trade-off between the ratio of compressed images and the sparsity of high-frequency coefficients, and optimize the wavelet transform image compression method, this paper proposes a blocked graded wavelet image compression method based on image complexity detection. Based on the image characteristics, the block complexity detection is defined. The row and column complexity map of the compressed image is calculated by color difference, and the decision of wavelet classification is made according to the content of the block. Through the system test, the blocked graded wavelet image compression has made a good choice among compression ratio, compressed image quality and wavelet high frequency coefficient sparsity.

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