Title:
領域抽出方法及び領域抽出装置
Document Type and Number:
Japanese Patent JP4219456
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an area extracting method by which the expanding condition used when an area expanding method is used can be found easily in processing the extraction of an area of interest. SOLUTION: A feature amount is detected from the gray level of picture elements existing in a prescribed area near a designated location and area expansion is performed by using the feature amount. Then a new feature amount is detected with respect to the expanded area and an expanding condition is decided, based on the feature amount when the expanded area meets a convergence condition. Here, the feature amount is, for example, the average error or maximum error of the minimum and maximum values of the picture elements at the designated location and its circumference and the gray level differences between the picture elements and their adjacent picture elements.
Inventors:
Adachi Masaru
Michio Oikawa
Youichi Seto
Michio Oikawa
Youichi Seto
Application Number:
JP34700598A
Publication Date:
February 04, 2009
Filing Date:
December 07, 1998
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
A61B6/03; A61B5/055; G06T1/00; A61B8/00; G06T7/00
Domestic Patent References:
| JP4146731A | ||||
| JP7249115A |
Other References:
関口 博之,リージョングローイングをベースにした対話型3次元領域抽出手法,電子情報通信学会論文誌 (J76-D-II) 第2号,日本,社団法人電子情報通信学会,1993年 2月25日,第J76-D-II巻,p.350-p.358
Attorney, Agent or Firm:
Kasuga Toshiaki
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