Ms. Golnoosh Samei Profile

Golnoosh Samei

at IPM

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Proceedings Article | 17 March 2008 Paper

Border preserving skin lesion segmentation

Mostafa Kamali, Golnoosh Samei

Proceedings Volume 6915, 69153A (2008) https://doi.org/10.1117/12.770574

KEYWORDS: Image segmentation, Skin, RGB color model, Melanoma, Image processing algorithms and systems, Image enhancement, Image processing, Skin cancer, Computer aided diagnosis and therapy, Color image processing

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Melanoma is a fatal cancer with a growing incident rate. However it could be cured if diagnosed in early stages. The first step in detecting melanoma is the separation of skin lesion from healthy skin. There are particular features associated with a malignant lesion whose successful detection relies upon accurately extracted borders. We propose a two step approach. First, we apply K-means clustering method (to 3D RGB space) that extracts relatively accurate borders. In the second step we perform an extra refining step for detecting the fading area around some lesions as accurately as possible. Our method has a number of novelties. Firstly as the clustering method is directly applied to the 3D color space, we do not overlook the dependencies between different color channels. In addition, it is capable of extracting fine lesion borders up to pixel level in spite of the difficulties associated with fading areas around the lesion. Performing clustering in different color spaces reveals that 3D RGB color space is preferred. The application of the proposed algorithm to an extensive data-base of skin lesions shows that its performance is superior to that of existing methods both in terms of accuracy and computational complexity.

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