Moire patterns in disparity measurement

Calculating disparity between left and right images is an essential operation in stereo vision. The technique proposed in this paper explores the Moire phenomenon for determining the disparity between regions in two images. Moire patterns are obtained when two similar images are superimposed one on another. Any two images that differ in orientation would still match at the fixed point, according to the Brouwer's theorem. When two images are superimposed the concentric Moire rings point to the location of the fixed point. The location of the fixed point gives the disparity.