Computerised image analysis of vitiligo lesion: evaluation using manually defined lesion areas

Background

Vitiligo is a cutaneous pigmentary disorder characterized by depigmented macules and patches that result from loss of epidermal melanocytes. Physician evaluates the efficacy of treatment by comparing the extent of vitiligo lesions before and after treatment based on the overall visual impression of the treatment response. This method is called the physician’s global assessment (PGA) which is subjective. In this article, we present an innovative digital image processing method to determine vitiligo lesion area in an objective manner.



Method

The digital method uses Independent Component Analysis (ICA) to generate melanin-based images representing ...

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