Image processing apparatus, image processing method, and storage medium

An image processing method comprising:

• an image obtaining step for obtaining an image;
• a size obtaining step for obtaining a size of a predetermined object in the image;
• a setting step for dividing the image into a plurality of regions based on the size of the predetermined object obtained by the size obtaining step, and for setting regression regions for estimating a number of the predetermined object, wherein the setting inhibits to set the regression regions smaller than a predetermined minimum size corresponding to the predetermined object;
• and
• an estimating step for estimating the number of the predetermined object by performing the regression process on the regression regions set by the setting.

A non-transitory computer-readable storage medium that stores a computer program for image processing apparatus to execute the following steps:

• an image obtaining step for obtaining an image;
• a size obtaining step for obtaining a size of a predetermined object in the image;
• a setting step for dividing the image into a plurality of regions based on the size of the predetermined object obtained by the size obtaining step, and for setting regression regions for estimating a number of the predetermined object, wherein the setting step inhibits to set the regression regions smaller than a predetermined minimum size corresponding to the predetermined object;
• and
• an estimating step for estimating the number of the predetermined object by performing the regression process on the regression regions set by the setting step.