Laser & Optoelectronics Progress, Volume. 57, Issue 2, 22801(2020)
Optimization of Building Contours by Classifying High-Resolution Images
Figures & Tables(14)
Fig. 1. Initial results of buildings extracted by shifted shadow analysis. (a) Original remote sensing image A; (b) initial result of building A; (c) original remote sensing image B; (d) initial result of building B
Fig. 4. Preliminary fitting effect of building edge contour. (a) Original remote sensing image; (b) initial results of building extraction; (c) building contour after preliminary fitting
Fig. 5. Inclination of building contour and its circumscribed rectangle with minimum area. (a) Consistent; (b) inconsistent
Fig. 6. Schematics for judging inclination of polygon. (a) Overall positive inclination; (b) overall negative inclination
Fig. 7. Principles of regularization of building contour. (a) Schematic for dividing contour into equal segments; (b) schematic of Hausdorff distance calculation
Fig. 9. Comparison of extraction results of building contour in image 1#. (a) Original remote sensing image; (b) extraction result by object-oriented segmentation and classification method; (c) extraction result by shifted shadow analysis method; (d) extraction result by proposed method
Fig. 10. Comparison of extraction results of building contour in image 2#. (a) Original remote sensing image; (b) extraction result by object-oriented segmentation and classification method; (c) extraction result by shifted shadow analysis method; (d) extraction result by proposed method
Fig. 11. Comparison of extraction results of building contour in image 3#. (a) Original remote sensing image; (b) extraction result by object-oriented segmentation and classification method; (c) extraction result by shifted shadow analysis method; (d) extraction result by proposed method
Fig. 12. Comparison of extraction results of building contour in image 4#. (a) Original remote sensing image; (b) extraction result by object-oriented segmentation and classification method; (c) extraction result by shifted shadow analysis method; (d) extraction result by proposed method
Fig. 13. Comparison of extraction results of building contour in image 5#. (a) Original remote sensing image; (b) extraction result by object-oriented segmentation and classification method; (c) extraction result by shifted shadow analysis method; (d) extraction result by proposed method
Table 1. Comparison of precision of building extraction results shown in Figs. 9--13%
View tableTable 1. Comparison of precision of building extraction results shown in Figs. 9--13%
Image number Extraction method Pixel-based performance parameter Object-based performance parameter VCM VCR F1 VOA VCM VCR F1 VOA Proposed method 95.69 94.46 95.07 90.61 100.00 100.00 100.00 100.00 1# Object-oriented method 92.75 73.18 81.81 69.22 100.00 43.33 60.46 43.33 Shifted shadow analysis method 89.98 95.62 92.72 86.42 100.00 100.00 100.00 100.00 Proposed method 88.12 97.13 92.41 85.89 100.00 100.00 100.00 100.00 2# Object-oriented method 89.76 81.37 85.36 74.46 100.00 78.57 88.00 78.57 Shifted shadow analysis method 85.92 98.13 91.62 84.54 100.00 100.00 100.00 100.00 Proposed method 94.11 99.81 96.88 93.95 100.00 100.00 100.00 100.00 3# Object-oriented method 91.86 84.62 88.09 78.72 100.00 74.07 85.10 74.07 Shifted shadow analysis method 87.30 98.49 92.55 86.14 100.00 00.00 100.00 100.00 Proposed method 88.39 97.53 92.73 86.46 98.59 100.00 99.29 98.59 4# Object-oriented method 80.11 72.07 75.88 61.13 100.00 80.68 89.30 80.68 Shifted shadow analysis method 73.77 98.40 84.33 72.90 95.77 100.00 97.84 95.77 Proposed method 91.26 99.05 95.00 90.48 100.00 100.0 100.00 100.00 5# Object-oriented method 75.52 89.51 81.92 69.38 97.85 95.80 96.81 93.83 Shifted shadow analysis method 75.49 99.11 85.70 74.98 99.28 97.88 98.58 97.20
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Wang Shuangxi, Yang Yuanwei, Chang Jingxin, Gao Xianjun. Optimization of Building Contours by Classifying High-Resolution Images[J]. Laser & Optoelectronics Progress, 2020, 57(2): 22801
Paper Information
Category: Remote Sensing and Sensors
Received: Jun. 4, 2019
Accepted: --
Published Online: Jan. 3, 2020
The Author Email: Yuanwei Yang (yyw_08@163.com)
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