An Adaptation of shape adaptive wavelet transform for image coding

We propose a method for coding of segmented images based on shape adaptive wavelet transform approach. Wavelet transform is computed directly on particular image segments without extension outside the boundaries. We adapted the transform method from [1], where it was used for compression of image segments but less effective zero tree coding was involved. Though used approach does not yet outperform the non-segmented methods in the sense of MSE, the visual quality of image segments is comparable. We propose also an alternative adaptation with comparative results, which can be used with classical DWT implementations.