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This paper proposes a “reversible” three-point Karhunen Loeve transform (KLT) for de-correlation of RGB color components of an image signal. It is composed of “reversible” two point rotation transforms which have singular points (SP) and their rotation angles change depending on correlation of an input signal. When the angle is close to SP, rounding errors inside the transform are magnified to huge...
In this report, we propose a bit-depth scalable coding system based on the integer wavelet transform. Encoder of the system outputs two layered bit-streams. Decoding the base layer, upper part of the bit planes of each pixel values of an input image signal are displayed. Adding the enhancement layer, all the bit planes are reconstructed without any loss. Since quantization errors in the transformed...
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