Title:
METHOD OF DERIVING THRESHOLD VALUE FOR IDENTIFYING MELANONYCHIA
Document Type and Number:
Japanese Patent JP2010252895
Kind Code:
A
Abstract:
To provide a method of deriving a threshold value for identifying objectively, non-invasively and credibly malignancy/benignancy of melanonychia.
The method of deriving threshold values for identifying melanonychia includes a first step of regarding a color image of melanonychia as a three-dimensional vector, whereof the components are the RGB parameters of each pixel, and finding the angle made by this three-dimensional vector with a reference vector, a second step of finding the probability of occurrence of pixels having the angle found in the first step, and a third step of finding a parameter threshold that makes it possible to identify malignancy/benignancy of melanonychia from the probability of occurrence found in the second step.
Inventors:
MUNEDA TAKAYUKI
FUJII JUZO
NAKAMURA ATSUSHI
OTSUBO SHINYA
FUJII JUZO
NAKAMURA ATSUSHI
OTSUBO SHINYA
Application Number:
JP2009103895A
Publication Date:
November 11, 2010
Filing Date:
April 22, 2009
Export Citation:
Assignee:
MITAKA KOKI KK
International Classes:
A61B5/00; A61B5/107
Other References:
JPN6010042839; 中杤昌弘 等: '爪部悪性黒色腫の識別のための周期的画像パターン抽出法の開発' 化学工学論文集 Ｖｏｌ．３３， Ｎｏ．６, 2007, ５７０-５８０
JPN6010042840; Ｃｅｌｅｂｉ ＭＥ ｅｔ ａｌ: 'Ａ ｍｅｔｈｏｄｏｌｏｇｉｃａｌ ａｐｐｒｏａｃｈ ｔｏ ｔｈｅ ｃｌａｓｓｉｆｉｃａｔｉｏｎ ｏｆ ｄｅｒｍｏｓｃｏｐｙ ｉｍａｇｅｓ．' Ｃｏｍｐｕｔｅｒｉｚｅｄ Ｍｅｄｉｃａｌ Ｉｍａｇｉｎｇ ａｎｄ Ｇｒａｐｈｉｃｓ Ｖｏｌ．３１，Ｎｏ．６, 2007, ３６２-３７３
JPN6010042840; Ｃｅｌｅｂｉ ＭＥ ｅｔ ａｌ: 'Ａ ｍｅｔｈｏｄｏｌｏｇｉｃａｌ ａｐｐｒｏａｃｈ ｔｏ ｔｈｅ ｃｌａｓｓｉｆｉｃａｔｉｏｎ ｏｆ ｄｅｒｍｏｓｃｏｐｙ ｉｍａｇｅｓ．' Ｃｏｍｐｕｔｅｒｉｚｅｄ Ｍｅｄｉｃａｌ Ｉｍａｇｉｎｇ ａｎｄ Ｇｒａｐｈｉｃｓ Ｖｏｌ．３１，Ｎｏ．６, 2007, ３６２-３７３
Attorney, Agent or Firm:
Hidekazu Miyoshi
Toshio Takamatsu
Toshio Takamatsu