engleski

Wavelet Adapted and Visually Tuned Compression

In this article we have proposed a new expression for calculating visually tuned quantization steps for wavelet coefficients quantization. This expression is based on the measurement results for five wavelets and a theoretic relationship between quantization noise visibility in the resonstructed image and wavelet filters frequency characteristics. We have shown that quantization with steps adapted to wavelet in such a way gives better image subjective quality.

Wavelet Transform; Image Compression; Visually Weighted Quantization

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