Image processing apparatus, image processing method, and storage medium

An image processing method comprising:

• based on first position information indicating a first position of a light source for irradiating an object with light, second position information indicating a second position where a normal is calculated in the object, and third position information indicating a third position of an image capturing apparatus for imaging the object irradiated with the light by the light source, calculating a normal at the second position;
• determining whether processing including correction of the second position and calculation of a normal at the corrected second position is performed;
• and
• until it is determined that the processing is not to be performed, repeatedly performing the processing,
• wherein the first position is a position where the light source irradiates the object with light so that the image capturing apparatus captures specular reflection light on the second position, and
• wherein in a case where an angle between a normal calculated in the processing for an m-th time and a normal calculated in the processing for an (m−1)-th time is less than a predetermined threshold, the determining determines that the processing is not to be performed, where m is a positive integer.

A non-transitory computer-readable storage medium storing instructions that, when executed by a computer, cause the computer to perform a method comprising:

• based on first position information indicating a first position of a light source for irradiating an object with light, second position information indicating a second position where a normal is calculated in the object, and third position information indicating a third position of an image capturing apparatus for imaging the object irradiated with the light by the light source, calculating a normal at the second position;
• determining whether processing including correction of the second position and calculation of a normal at the corrected second position is performed;
• and
• until it is determined that the processing is not to be performed, repeatedly performing the processing,
• wherein the first position is a position where the light source irradiates the object with light so that the image capturing apparatus captures specular reflection light on the second position, and
• wherein in a case where an angle between a normal calculated in the processing for an m-th time and a normal calculated in the processing for an (m−1)-th time is less than a predetermined threshold, the determining determines that the processing is not to be performed, where m is a positive integer.