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This paper proposes perceptual segmentation of natural color images using a fuzzy-based hierarchical algorithm and its application to the segmentation of dermoscopy images. A fuzzy-based homogeneity measure makes a fusion of the color features and the texture features. The proposed hierarchical segmentation method is performed in four stages: simple splitting, local merging, global merging and boundary...
We introduced discrete wavelet transform (DWT) to vector quantization (VQ) for image compression. DWT is multi-resolution analysis, and a signal energy concentrates to specific DWT coefficients. This characteristics is useful for image compression. DWT coefficients are compressed using VQ with variable block size. To perform effective compression, blocks are merged by the algorithm proposed in this...
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