Texture evaluation apparatus, texture evaluation method, and computer-readable recording medium

A texture evaluation method, comprising:

• projecting a two-dimensional pattern having an edge element onto an object;
• capturing an image of a surface of the object, the captured image including a virtual image of two-dimensional pattern including the edge element;
• determining, using image data of the captured image, a reference line approximating the edge element in the captured image,
• calculating, as an amount of shape change, a measure of positional deviation of the edge element in the captured image from the determined reference line;
• and
• evaluating a texture of the object based on the calculated amount of shape change and predetermined sensory evaluation information.

A non-transitory computer-readable recording medium with an executable program stored thereon, wherein the program, when executed by a computer that includes a memory to store sensory evaluation information, instructs the computer to perform a method comprising:

• obtaining an image of an object onto which a two-dimensional pattern having an edge element is projected, the obtained image including a virtual image of the two-dimensional pattern including the edge element;
• determining, using image data of the obtained image, a reference line approximating the edge element in the obtained image,
• calculating, as an amount of shape change, a measure of positional deviation of the edge element in the obtained image from the determined reference line;
• and
• evaluating a texture of the object based on the calculated amount of shape change and the sensory evaluation information.