| 摘要 |
PROBLEM TO BE SOLVED: To reduce analysis processing overhead (such as memory overhead and CPU overhead), which occur due to a distance determination with a space resolution higher than necessary at stereoscopic distance detection and to reduce collation errors associated with this. SOLUTION: In the case of this implementation form in which the size of a correlation region is of 4×4 pixels for correlating right and left images with each other, a collating means for a close-distance area uses 4 pixels (1 row) for collation, a collating means for an intermediate close-distance area uses 8 pixels (2 rows) for distance collation, a collating means for an intermediate long-distance area uses 12 pixels (3 rows) for distance collation, and a collating means for a long-distance area uses all the 16 pixels (4 rows) of distance collation. Thereby, it is possible to reduce the amount of distance data, which becomes of large amounts at a close distance, and reduce the computation time with reductions in the amount of computation. COPYRIGHT: (C)2005,JPO&NCIPI
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