基于小波影像金字塔的影像自动匹配

数字影像高精度快速匹配是遥感影像3维信息提取的关键技术之一，文中对如何实现数字影像自动化匹配进行了研究，提出了一种基于小波影像金字塔的数字影像自动匹配方法。该方法在生成小波影像金字塔的基础上，利用交叉相关算法实现不同影像金字塔同一层影像间的匹配，利用视差控制将同名点从金字塔高层影像向低层影像进行传递。利用该方法对具体的SPOT影像进行了实验，表明基于小波影像金字塔的数字影像自动匹配方法具有较好的效果。

Automatic Image Matching Based on Wavelet Pyramid

Digital image matching is a key problem in extracting 3D information from remotely sensed images. In this essay an automatic approach of image matching based on wavelet transformed pyramids is developed to provide a detailed set of matched points quickly. After generating image pyramids, the cross correlation algorithm is proposed to search identical points between images on the same level and parallax control is utilized to convey identical points from higher level image to lower level image. The approach described here has been applied to real SPOT images. The experiment results prove that the matching method proposed by this paper has satisfactory efficiency and accuracy.