Image processing apparatus, image processing method, and program

摘要

An image processing apparatus for extracting a contour of an object which extracts boundary candidate points from the image and sets reference areas each having one of boundary candidate points as a center and includes small areas. A first reference area is set from the reference areas and a first small area is set from small areas included in the first reference area. From reference areas, a second reference area is set, whose feature is similar to that of the first reference area and as a second small area, a small area is set which has a feature amount similar to that of the first small area among small areas included in the second reference area. The boundary candidate points is tracked to extract the contour of the object based on the first reference area, the second reference area, the first small area, and the second small area.

主权项

1. An image processing apparatus, comprising at least a processor and memory, cooperating to function as:
an obtaining unit configured to obtain an image including an object; an area setting unit configured to extract a plurality of boundary candidate points from the image, set a plurality of reference areas which include at least one of the plurality of boundary candidate points, divide each reference area into a plurality of small areas, and integrate, among the plurality of small areas within the same reference area, neighboring areas having similar feature amounts; a first reference area setting unit configured to set a first reference area from the plurality of reference areas; a first small area setting unit configured to set a first small area from a plurality of small areas included in the first reference area; a second reference area setting unit configured to set, from the plurality of reference areas, a second reference area which is similar to the first reference area with respect to shape; a second small area setting unit configured to set a second small area, from a plurality of small areas included in the second reference area; a determination unit configured to determine whether a feature amount of the first small area and a feature amount of the second small area are similar to each other; and a contour extraction unit configured to extract a contour of the object based on the determination result of the determination unit.