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• W2137136191 abstract "In this paper, we derive bounds on the structural similarity (SSIM) index as a function of quantization rate for fixed-rate uniform quantization of image discrete cosine transform (DCT) coefficients under the high-rate assumption. The space domain SSIM index is first expressed in terms of the DCT coefficients of the space domain vectors. The transform domain SSIM index is then used to derive bounds on the average SSIM index as a function of quantization rate for uniform, Gaussian, and Laplacian sources. As an illustrative example, uniform quantization of the DCT coefficients of natural images is considered. We show that the SSIM index between the reference and quantized images fall within the bounds for a large set of natural images. Further, we show using a simple example that the proposed bounds could be very useful for rate allocation problems in practical image and video coding applications." @default.
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• W2137136191 date "2008-09-01" @default.
• W2137136191 modified "2023-10-06" @default.
• W2137136191 title "Rate Bounds on SSIM Index of Quantized Images" @default.
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• W2137136191 doi "https://doi.org/10.1109/tip.2008.2001400" @default.
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