Huixin HE, Junfu FAN, Wenhe CHEN, Yuke ZHOU, Peng ZHANG, Xiao YU. Extraction of Shaded Roads in High-Resolution Remote Sensing Imagery based on Brightness Compensation [J]. Journal of Geo-information Science, 2020, 22(2): 258
- Journal of Geo-information Science
- Vol. 22, Issue 2, 258 (2020)
Fig. 1. Flowchart of shaded roads extraction with brightness compensation method
Fig. 2. Image preprocessing of linear stretch and bilateral filter
Fig. 3. Shadow extraction on HSI space with threshold segmentation
Fig. 4. Brightness compensation over shadow areas
Fig. 5. Brightness compensation over shadow areas for the shaded road extraction
Fig. 6. Comparison of the K-means and K-means++ algorithms in extracting unshaded roads with threshold segmentation
Fig. 7. Definition of shape endpoints in outline reparation method
Fig. 8. Data source for the verification experiment
Fig. 9. Results of unshaded roads extraction with threshold segmentation in HSI space and K-means algorithm
Fig. 10. Shaded roads extraction and preprocessing
Fig. 11. Result of shaded roads extraction based on the brightness compensation method
Fig. 12. Comparison of brightness compensation method and traditional shadow coefficient amendment method in rough extraction of shaded roads
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Table 1. Evaluation of the shaded roads extraction results
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