Title:
METHOD AND DEVICE FOR EXTRACTING CONTOUR
Document Type and Number:
Japanese Patent JP3534009
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method and a device for automatically extracting a contour without especially designating the threshold value of area separation in the case of contour extraction for separating respective points into plural areas, to which these points belong, and extracting the boundary between the areas as a contour on the basis of attributes at the respective points of an image with respect to image data containing the image of an object to become the target of contour extraction.
SOLUTION: The expected value of an area assignment probability for each point of the image to belong to each of areas is calculated (step 104), an area parameter is updated (step 105), an evaluation function is calculated on the basis of a mixed probability distribution obtained from the area assignment probability and the area parameter (step 106), respective areas are separated on the basis of the area assignment probability (step 108) and the contour is extracted on the basis of the separated areas.
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Inventors:
Kiyuna, Asaharu
Application Number:
JP26966099A
Publication Date:
June 07, 2004
Filing Date:
September 24, 1999
Export Citation:
Assignee:
NEC CORP
International Classes:
A61B5/055; A61B6/03; G06K9/48; G06T3/00; G06T5/00; H04N7/18; G06T7/00; G06T7/60; G06T9/20; (IPC1-7): G06T7/60; A61B5/055; A61B6/03; H04N7/18
Attorney, Agent or Firm:
加藤 朝道