Information processing apparatus, information processing method, and storage medium

An information processing apparatus, comprising:

• an acquisition unit configured to acquire an image;
• an extraction unit configured to extract a region included in the image as a target region, wherein the target region is a region whose density value is changeable in accordance with an image capturing condition;
• a determination unit configured to determine a variation in density value of each pixel included in the target region;
• a generation unit configured to uniformly change a density value of each pixel included in the target region based on the variation in density value determined by the determination unit and generate a training image without changing a density value of each pixel included in a region other than the target region;
• and
• a training unit configured to train an identifier using the training image.

An information processing method, comprising:

• extracting a region included in an image as a target region, wherein the target region is a region whose density value is changeable in accordance with an image capturing condition;
• generating a training image in which a density value of a pixel included in the target region is changed based on a variation in density value of the pixel included in the target region, the variation being determined to be larger than a variation in density value of a pixel included in a region other than the target region;
• and
• training an identifier using the training image.