Three-dimensional object determining apparatus, method, and computer program product

A three-dimensional object determining method comprising:

• detecting a plurality of feature points of an object included in an image data that is acquired;
• generating a normalized pattern that is normalized by a three-dimensional model from the image data using the plurality of feature points;
• estimating an illumination direction in which light is emitted to the object in the image data from the three-dimensional model and the normalized pattern;
• and
• determining whether or not the object in the image data is a three-dimensional object on the basis of the illumination direction.

A non-transitory computer readable medium including programmed instructions for three-dimensional object determining, wherein the instructions, when executed by a computer, cause the computer to perform:

• detecting a plurality of feature points of an object included in an image data that is acquired;
• generating a normalized pattern that is normalized by a three-dimensional model from the image data using the plurality of feature points;
• estimating an illumination direction in which light is emitted to the object in the image data from the three-dimensional model and the normalized pattern;
• and
• determining whether or not the object in the image data is a three-dimensional object on the basis of the illumination direction.