Title:
METHOD AND DEVICE FOR DETECTING PATTERN IN TWO-DIMENSIONAL MULTI-CONTRAST IMAGE
Document Type and Number:
Japanese Patent JP3852125
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To detect a minute calcified shadow being the important finding of breast cancer from a mammographic picture distinguishably from a line component shadow.
SOLUTION: The picture element of a candidate area is adopted as a center, plural search directions spreading in a radiation-state in a periphery are set and the picture elements where the vector strength of a density pitch in the respective picture elements becomes max. are obtained in the respective search directions. Then, it is discriminated whether or not a vector distribution is the radiation-state one being the feature of the minute calcified shadow based on vector strength in the respective picture elements where vector strength becomes max. and angle difference between the search direction and a vector direction.
Inventors:
Kenichi Hirako
Hiroshi Fujita
Jin Yoshimura
Hiroshi Fujita
Jin Yoshimura
Application Number:
JP5777796A
Publication Date:
November 29, 2006
Filing Date:
March 14, 1996
Export Citation:
Assignee:
Konica Minolta Holdings Co., Ltd.
International Classes:
G06T1/00; A61B6/00; G06T7/00; G06T7/60; (IPC1-7): G06T7/00; A61B6/00; G06T1/00
Domestic Patent References:
| JP7255703A | ||||
| JP9167238A |
Foreign References:
| WO1996027846A1 |
Other References:
平子賢一ほか3名,乳房X線写真における微小石灰化検出フィルタの開発 -濃度こう配と3重リングフィルタ解析に基づく方法-,電子情報通信学会論文誌 ,日本,社団法人電子情報通信学会,1995年 9月25日,第J78-D-II巻,第9号,p.1334~1345
松本一男ほか2名,DR画像における腫瘤影検出 -アイリスフィルタ-,電子情報通信学会論文誌,日本,社団法人電子情報通信学会,1992年 3月25日,第J75-D-II巻,第3号,p.663~670
松本一男ほか2名,DR画像における腫瘤影検出 -アイリスフィルタ-,電子情報通信学会論文誌,日本,社団法人電子情報通信学会,1992年 3月25日,第J75-D-II巻,第3号,p.663~670
Attorney, Agent or Firm:
Tomijio Sasashima