A Dynamic Programming (DP) based algorithm that achieves real-time, high quality stereo-matching is presented. A special coarse to fine approach as well as the MMX based assembler implementation mainly contribute to the reached computation speed. A novel vertical smoothing approach by re-integrating paths inside the DP matching allows the avoidance of noisy horizontal strokes, so that high quality stereo-matching is achieved. The current implementation capable of running at about 30 FPS on an 2.2GHz PC, which is sufficient for the utilization in real-time applications.

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Absfrou -A kind of registration method applicable to outdoor AR system (augmented reality system) is elaborated. The plane marker is employed in calculating initial structure parameter; natural features are tracked from the two adjacent frames through correlation and taken as candidate matches. A method based on the cansiraint or marker and RANSAC (Random Sample Consensus) is adopted, so that good matches, which satisfy coplanar condition, are selected out of the candidate matches. Through the homographic matrix provided from the coplanar points, we could work out motion parameter of the camera, and finally finish registration of virtual objects. The registration method is most appropriate for outdoor surroundings with obscure plane structure.

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