IMAGE SEGMENTATION APPARATUS, METHOD THEREOF, AND RECORDING MEDIUM STORING PROCESSING PROGRAM

An image segmentation apparatus divides an image into plural regions according to feature quantities of pixels for composing the image, by a programmed computer. A divider divides the image into plural regions by using the separation degree of feature quantities of pixels for composing the image. A separation degree operator determines the separation of feature quantities between interior and exterior region, according to the dissimilarity of feature quantities of pixels for enclosing the boundary of plural regions divided by the divider. A changer changes the alienation degree of feature quantities of pixels enclosing the boundary between the interior and exterior region in a specific condition, by using the alienation degree of feature quantities between interior and exterior region calculated by the alienation degree operator. The divider divides the image into plural regions by using changed separation degree. A recording medium stores a computer-readable processing program for dividing an image into plural regions, according to feature quantities of pixels for composing the image, by a computer.