CORRECTING AN EPIPOLAR AXIS FOR SKEW AND OFFSET

Cameras (10, 12) produce first and second images (14, 16) of an object (18) from different viewpoints. An image partitioning module (54) partitions the images (14, 16) into a plurality of vertically striped regions (70), such that each region (70) of the first image (14) corresponds to a region (70) of the second image (16). A region alignment module (55) vertically shifts a region (70) of the first image (14) in a direction calculated to vertically align a portion (30) of the region (70) with a substantially matching portion (32) of the corresponding region (70). A disparity calculation module (62) calculates at least one disparity value between at least a portion (30) of the vertically shifted region (70) and at least a portion (32) of the corresponding region (70).