Stereo matching cost computation based on nonsubsampled contourlet transform |
| |
| Affiliation: | 1. Key Laboratory of Virtual Geographic Environment, Ministry of Education, Nanjing Normal University, 1# WenYuan Road, Nanjing, Jiangsu 210023, PR China;2. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, 1# WenYuan Road, Nanjing, Jiangsu 210023, PR China;3. Key Laboratory of Police Geographic Information Technology, Ministry of Public Security, Nanjing Normal University, 1# WenYuan Road, Nanjing, Jiangsu 210023, PR China;1. School of Computer Science and Technology, Harbin Institute of Technology, 150080 Harbin, China;2. Department of CSIE, National Dong Hwa University, Hualien 974, Taiwan;1. Department of Electrical Engineering, School of Electronic Information, Wuhan University, Wuhan 430072, Hubei, PR China;2. School of International Software, Wuhan University, Wuhan 430072, Hubei, PR China |
| |
| Abstract: | A new matching cost computation method based on nonsubsampled contourlet transform (NSCT) for stereo image matching is proposed in this paper. Firstly, stereo image is decomposed into high frequency sub-band images at different scales and along different directions by NSCT. Secondly, by utilizing coefficients in high frequency domain and grayscales in RGB color space, the computation model of weighted matching cost between two pixels is designed based on the gestalt laws. Lastly, two types of experiments are carried out with standard stereopairs in the Middlebury benchmark. One of the experiments is to confirm optimum values of NSCT scale and direction parameters, and the other is to compare proposed matching cost with nine known matching costs. Experimental results show that the optimum values of scale and direction parameters are respectively 2 and 3, and the matching accuracy of the proposed matching cost is twice higher than that of traditional NCC cost. |
| |
| Keywords: | Stereo image matching Nonsubsampled contourlet transform Feature vector Weighted matching cost Matching accuracy |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
