Binocular Stereo Matching Algorithm for Wide Baseline Based on Stable Extremal Regions

Stereo matching with regions is a master method for binocular image matching of wide baseline. It is most difficult that extracting invariant region. Stable extremal region(SER) is proposed in this paper, and its extracting algorithm. To magnify the intensity change and identify its edge easily, the exponent transform has been used. Then, the affine invariant moments of SER and the Euclid-distance between the region and another are computed using in measuring similarity. The experiment result show the extremal points locate accurately, the SER are stable, and correspondence regions are exact, it is improved to 70.9%.