| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for measuring a structured optical base. <P>SOLUTION: In such a state that a first illuminant 211 which emits light through an opening 292 having shadow formation elements 289, 290 and 291 is operated, and a second illuminant 212 is non-operated, a first illuminant image is fetched, and in such a state that the second illuminant 212 is operated, and the first illuminant 211 is non-operated, a second illuminant image is fetched, and a plurality of first luminance values of pixels in the first illuminant image are determined, and a plurality of second luminance values of pixels in the second illuminant image are determined, and a brightness rate of the plurality of second luminance values to the plurality of first luminance values is determined, and an object distance is determined by using the brightness rate. <P>COPYRIGHT: (C)2012,JPO&INPIT |
