发明名称 |
Derivation method of discrimination threshold of nail apparatus melanoma |
摘要 |
An derivation method of a nail apparatus melanoma discrimination threshold includes a first step of assuming a color image of longitudinal melanonychia as three-dimensional vectors each composed of RGB parameter values of each pixel and finding an angle between each of the three-dimensional vectors and a reference vector, a second step of finding a probability of occurrence according to a frequency distribution of the angles found in the first step, and a third step of finding, according to the probability of occurrence found in the second step, a threshold for a parameter to discriminate whether the longitudinal melanonychia is malignant or benign. |
申请公布号 |
US8948477(B2) |
申请公布日期 |
2015.02.03 |
申请号 |
US201013265066 |
申请日期 |
2010.04.22 |
申请人 |
Mitaka Kohki Co., Ltd. |
发明人 |
Sota Takayuki;Fujii Juzo;Nakamura Atsushi;Ohtsubo Shinya |
分类号 |
G06K9/00;A61B5/00;G06T7/00;G06T7/40 |
主分类号 |
G06K9/00 |
代理机构 |
Greenblum & Bernstein, P.L.C. |
代理人 |
Greenblum & Bernstein, P.L.C. |
主权项 |
1. A derivation method of a nail apparatus melanoma discrimination threshold, comprising:
representing a color image of longitudinal melanonychia as three-dimensional vectors each having RGB parameter values of each pixel and finding an angle between each of the three-dimensional vectors and a reference vector; finding a probability of occurrence according to a frequency distribution of the found angles; and according to the probability of occurrence, finding a threshold for a parameter to discriminate whether the longitudinal melanonychia is malignant or benign. |
地址 |
Tokyo JP |