Information processing apparatus, information processing method, and computer-readable storage medium

An information processing method comprising:

• a reference line pattern detection step of detecting a reference line pattern from a captured image of an object to which pattern light is projected by pattern light projection means, the image being captured by image pickup means, the pattern light including line patterns having at least two directions and having at least two lines in each of the directions and including at least one reference line pattern used for identifying each of the line patterns as a reference of the line patterns, wherein the shape or color of the reference line pattern is different from that of the line patterns;
• and a line pattern corresponding step of establishing correspondence between line patterns projected by the pattern light projection means and line patterns captured by the image pickup means in accordance with topological positional relationship using the reference line pattern detected in the reference line pattern detection step.

A non-transitory computer-readable storage medium storing a program for causing a computer to perform a method, the method comprising:

• a reference line pattern detection step of detecting a reference line pattern from a captured image of an object to which pattern light is projected by pattern light projection means, the image being captured by image pickup means, the pattern light including line patterns having at least two directions and having at least two lines in each of the directions and including at least one reference line pattern used for identifying each of the line patterns as a reference of the line patterns, wherein the shape or color of the reference line pattern is different from that of the line patterns;
• and
• a line pattern corresponding step of establishing correspondence between line patterns projected by the pattern light projection means and line patterns captured by the image pickup means in accordance with topological positional relationship using the reference line pattern detected in the reference line pattern detection step.