Abstract: This paper proposed an stereo matching algorithm for 3D Reconstruction based on uncalibrated color images.First,this algorithm referred a limiting factor to eliminate the clustering phenomenon of Harris corners,and correlative matching method based on color was used for match. Then, removed the obvious outlier points according to the principle of slope consistency, and used RANSAC algorithm to estimate Fundamental matrix, at the same time, excluded outlicr points. Finally,found unmatching points by using Fundamental matrix The experimental results show that object structure can be well reconstructed by using this algorithm, and it is an effective stereo matching algorithm for 3D Reconstruction.

Key words: Stereo matching, Uncahbrated color images, 3D reconstruction, Limiting factor, Slope consistency