摘要
通过对航空立体像对及其边缘影像的分析,提出了一种新的航空影像初始视差的确定方法。试验表明,该算法能准确地确定纹理单一、影像对比度小的航空立体影像对的初始视差,可明显提高影像匹配的精度和可靠性。
This paper presents a new algorithm for determining parallax of aerial images with analyzing the property of aerial images and corresponding edge-images. Firstly the authors get the data of edges and grads in a pair of aerial stereo images using Canny operator, then produce the histograms of grads of edges in horizontal direction and in vertical direction respectively. After calculating the correlation coefficients of the two histograms of grads of edges with different relative migration, the migration is the parallax in horizontal direction and in vertical direction where the coefficient is the maximum. The experiment results show that the algorithm is reliable and efficient.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2005年第9期762-765,共4页
Geomatics and Information Science of Wuhan University
基金
全国高等学校优秀博士学位论文作者专项资金资助项目(200142)
国家自然科学基金资助项目(40171072)。
关键词
航摄影像
初始视差
边缘
梯度
投影图
aerial stereo images
parallax
edges
grads
histograms
