Method of discriminating longitudinal melanonychia and visualizing malignancy thereof
AssigneeMitaka Kohki Co., Ltd.
InventorsTakayuki Sota, Juzo Fujii, Hiroshi Koga
Life of this patent
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Abstract
In a digital color image of longitudinal melanonychia, RGB parameter values of each pixel are assumed as three components to form a three-dimensional vector. Latitudinal and longitudinal variables are obtained for each three-dimensional vector in an RGB space. The latitudinal and longitudinal variables are used to define a distribution of points, and from the distribution, a discrimination index is found. The discrimination index is classified according to a threshold, to discriminate whether the longitudinal melanonychia is malignant or benign. The distribution of points is displayed to realize visualization of the malignancy of the longitudinal melanonychia.
Claims2
A method of discriminating longitudinal melanonychia, including:
- a first step of assuming a digital color image of nail apparatus melanoma as three-dimensional vectors each composed of RGB parameter values of each pixel and finding a latitudinal variable and a longitudinal variable for each of the three-dimensional vectors in an RGB space;
- a second step of finding a discrimination index according to a distribution of points defined by the latitudinal and longitudinal variables found in the first step;
- and
- a third step of classifying the discrimination index found in the second step according to a threshold and discriminating whether the nail apparatus melanoma is malignant or benign.
Dependencies are inferred from the claim text.