频域局部上采样的小基高比影像匹配方法

Small baseline stereo matching method based on local up sampling in frequency domain

针对小基高比摄影测量中交会精度缺失的问题,该文利用相位相关技术计算初始匹配视差,并对相位相关互功率谱进行局部上采样,探讨了一种适用于小基高比立体影像的高精度影像匹配算法。实验结果表明,在一定条件下该算法有着较高的匹配精度,能够用于小基高比立体影像重建可靠的高程信息。

The loss of the height precision can be compensated by high-precision image matching.In the paper,for the sub-pixel image matching problem,a high-precision image matching algorithm was discussed,which firstly computes the rude parallax using the phase correlation method and then up-samples the local cross power spectrum gained by phase correlation.The experimental results demonstrated that in certain conditions the proposed algorithm could achieve fairly high matching precision in reconstructing the reliable height information for small baseline stereo images.