The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 1998
Filed:
Apr. 30, 1996
Takeshi Tokuyama, Machida, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A clear partial image of predetermined size can be segmented at high speed. The method for segmenting a partial image from a whole image comprising a plurality of pixels with gray levels comprises the steps of: inputting a number k of pixels of the partial image to be segmented; detecting a partial image maximizing: ##EQU1## where n is the number of pixels of the whole image, g(i, j) is the gray level of a pixel (i, j), .alpha. is a parameter, and .vertline.S.vertline. is the number of pixels of the partial image S; comparing the number .vertline.S.vertline. of pixels of the partial image S maximizing U.sub..alpha. (S) with the inputted number k; increasing a value of .alpha. if .vertline.S.vertline.>k and decreasing the value of .alpha. if .vertline.S.vertline.<k; again executing the steps subsequent to the specifying step using the updated .alpha.; and outputting said partial image S which maximizes U.sub..alpha. (S) if .vertline.S.vertline.=k.