Image analysis – Pattern recognition – Feature extraction
Patent
1997-12-19
2000-02-01
Kelley, Christopher S.
Image analysis
Pattern recognition
Feature extraction
382164, 382171, 382173, 382175, 382190, 382282, 382291, G06K 948
Patent
active
060212217
ABSTRACT:
A method for designating an object image to be extracted is simplified. Positions of contour designation points are designated by employing an operation input apparatus so that a contour region of an initial region containing a desirable subjective object image is designated. A central processing circuit firstly subdivides the basic image into a plurality of division regions which are like in color, in units of pixel groups. Subsequently, the central processing circuit calculates distances between pixels within the division region and pixels within the contour region, and also calculates positions of pixels with respect to the initial region, and then determines factor values for the respective pixels on the basis of distance values indicative of the distance and the position. Subsequently, the central processing circuit accumulates the factor values of every division region to thereby calculate the weight factor of each division region, and judges whether or not each division region is equal to a subject region by comparing a weighting factor with a judgment value. Finally, the central processing circuit extracts pixel data of pixels contained in the subject region from a basic image signal to thereby produce an extract image signal.
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Kelley Christopher S.
Patel Kanji
Sharp Kabushiki Kaisha
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