Image analysis – Applications – Biomedical applications
Patent
1996-04-22
1999-08-03
Au, Amelia
Image analysis
Applications
Biomedical applications
378 37, 378 62, 382173, 382260, G06K 900
Patent
active
059335181
ABSTRACT:
An image processing method is for automatically detecting objects of a predetermined type among diffuse objects in an original image, in the form of a two-dimensional matrix of pixels which have digitized intensity values. The method is carried out by a processing chain. A first transformed image (11A, 11B) is formed by a first smoothing (120A, 120B) of the original image (10A) to the resolution of the objects to be detected, in which local intensity optimums (LIST1A, LIST1B) are determined (130A, 140A; 130B, 140B). A second transformed image (13A, 13B) is formed via a second smoothing (220A, 220B) of the original image (10A) to the resolution of diffuse objects, in which homogeneous intensity regions are determined (230A, 230B), local intensity optimums (LIST1A, LIST1B) determined on the basis of the first transformed image are placed (240A, 240B) in the homogeneous regions determined on the basis of the second transformed image. One of these optimums per homogeneous region is selected (LIST2A, LIST2B), and objects among these optimums are additionally selected which constitute a list (LIST3A, LIST3B) of objects of a given type detected in the original image. The method is applicable to automatic recognition of suspect regions in radiologic images.
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Au Amelia
Bobys Marc
Renfrew, Jr. Dwight H.
U.S. Philips Corporation
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