| 基于边缘梯度投影图的航空影像初始视差确定 |
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| 引用本文： | 袁修孝,许骥,谢酬.基于边缘梯度投影图的航空影像初始视差确定[J].武汉大学学报(信息科学版),2005,30(9):762-765. |
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| 作者姓名： | 袁修孝 许骥 谢酬 |
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| 作者单位： | 武汉大学遥感信息工程学院,武汉市珞喻路129号,430079 |
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| 基金项目： | 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)。 |
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| 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。
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| 关 键 词： | 航摄影像 初始视差 边缘 梯度 投影图 |
| 文章编号： | 1671-8860(2005)09-0762-04 |
| 收稿时间： | 2005-05-28 |
| 修稿时间： | 2005年5月28日 |
An Algorithm for Determining Parallax of Aerial Images Based on Histograms of Edges and Grads |
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| YUAN Xiuxiao,XU Ji,XIE Chou.An Algorithm for Determining Parallax of Aerial Images Based on Histograms of Edges and Grads[J].Geomatics and Information Science of Wuhan University,2005,30(9):762-765. |
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| Authors: | YUAN Xiuxiao XU Ji XIE Chou |
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| Institution: | YUAN Xiuxiao~ |
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| Abstract: | 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. |
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| Keywords: | aerial stereo images parallax edges grads histograms |
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