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A Method for the Increasing Efficiency of the Watershed Based Image Segmentation using Haar Wavelet Transform  

김종배 (경북대학교 컴퓨터공학과)
김항준 (경북대학교 컴퓨터공학과)
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Abstract
This paper presents an efficient method for image segmentation based on a multiresolution application of a wavelet transform and watershed segmentation algorithm. The procedure toward complete segmentation consists of four steps: pyramid representation, image segmentation, region merging and region projection. First, pyramid representation creates multiresolution images using a wavelet transform. Second, image segmentation segments the lowest-resolution image of the pyramid using a watershed segmentation algorithm. Third, region merging merges the segmented regions using the third-order moment values of the wavelet coefficients. Finally, the segmented low-resolution image with label is projected into a full-resolution image (original image) by inverse wavelet transform. Experimental results of the presented method can be applied to the segmentation of noise or degraded images as well as reduce over-segmentation.
Keywords
Watershed image segmentation; Multiresolution image analysis; Wavelet Transform;
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