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Despite the popularity of wavelet-based image compression, its shortcoming of having error inhomogeneity (EI), namely the error that is different for even and odd pixel location, has not been previously analyzed and formally addressed. The difference can be substantial, up to 3.4-dB peak signal-to-noise ratio (PSNR) for some images and compression ratios. In this paper, we show that the EI is caused...
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