Patent ID: 9217636
Filing Date: 2015-12-22
Classification: G01B

Abstract:
1. An information processing apparatus comprising: a projection unit configured to project a projection pattern onto an object, the projection pattern including at least two line patterns in a first direction and including a reference line pattern in a second direction being different from the first direction, to be used for distinguishing each of the line patterns among the at least two line patterns, wherein the reference line pattern has intersections with the at least two line patterns, wherein the intersections divide the reference line pattern into segments, and wherein a width of at least one of the segments of the reference line pattern is different from widths of other segments; an image capturing unit configured to capture an image including the object onto which the projection pattern is projected; an extraction unit configured to extract the projection pattern included in the captured image; a reference line pattern detection unit configured to detect the reference line pattern from the extracted projection pattern based on widths of the segments of the extracted projection pattern; a line pattern corresponding unit configured to establish correspondence between line patterns projected by the projection unit and line patterns captured by the image capturing unit based on the width of the at least one of the segments of the detected reference line pattern that is different from the widths of the other segments; and an obtaining unit configured to obtain a position of a target based on a result of the correspondence established by the line pattern corresponding unit.