Method of building height estimation under the constraint of profile contour lines from high resolution remote sensing images

doi:10.13474/j.cnki.11-2246.2019.0281

测绘通报 ›› 2019, Vol. 0 ›› Issue (9): 34-37,72.doi: 10.13474/j.cnki.11-2246.2019.0281

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Method of building height estimation under the constraint of profile contour lines from high resolution remote sensing images

CHEN Hui^1,2,3, ZHANG Ka^1,2,3,4, SU Dong^1,2,3, WANG Pengbo^1,2,3

1. Key Laboratory of Virtual Geographic Environment, Ministry of Education, Nanjing Normal University, Nanjing 210023, China;
2. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China;
3. School of Geography, Nanjing Normal University, Nanjing 210023, China;
4. Jiangsu Province State Key Laboratory Cultivation Base of Geographical Environment Evolution, Nanjing 210023, China

Received:2018-10-25 Online:2019-09-25 Published:2019-09-28

Abstract

Abstract: In view of the mutual occlusion between shadows when we use shadows to calculate the height of a building, in this paper, we propose a new method for building height estimation based on building profile. First, we use RPC model to calculate the direction of image displacement and satellite imaging angle, then rotate the remote sensing image to make the building image displacement along the horizontal direction. Then we use the Canny algorithm for contour detection and construct rectangular morphological structural elements to perform morphological opening operations on contour images to extract side contours. Subsequently Hough transform and building corner are used to further screen the extracted contours. Finally, the building height is estimated according to the geometric relationship between the building height and the displacement of the image point. We use high-resolution satellite images to verify the method and compare it with the shadow method to estimate the building height. The experimental results indicate that the average error of building height using the profile line can reach 0.7 m, and the actual accuracy is better than using the shadow method.

Key words: building height estimation, profile contour line, high resolution remote sensing image, building contour detection

CLC Number:

P237

CHEN Hui, ZHANG Ka, SU Dong, WANG Pengbo. Method of building height estimation under the constraint of profile contour lines from high resolution remote sensing images[J]. 测绘通报, 2019, 0(9): 34-37,72.

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Method of building height estimation under the constraint of profile contour lines from high resolution remote sensing images

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