Optics and Precision Engineering, Volume. 31, Issue 22, 3331(2023)
Adaptive single tree extraction method based on fusion of airborne lidar and vegetation index
Figures & Tables(14)
Fig. 9. Comparison of multiple single tree segmentation algorithms
Fig. 10. Comparison accuracy evaluation of vegetation extraction results
Table 1. Visible vegetation index
View tableView in ArticleTable 1. Visible vegetation index
Vegetation Index Abbreviation Formula Source 差异增强植被指数 DEVI （G+R+B）/（3×G） 文献［ 11 ］红绿比值指数 RGRI R/G 文献［ 25 ］可见光波段差异颜色指数 VDVI （2×G-R-B）/（2×G+R+B） 文献［ 10 ］归一化绿红差异指数 NGRDI （G-R）/（G+R） 文献［ 26 -27 ］改进型绿红植被指数 MGRVI （G2-R2）/（G2+R2） 文献［ 28 ］
Table 2. Accuracy report of vegetation extraction
View tableView in ArticleTable 2. Accuracy report of vegetation extraction
Vegetation index Total correct rate Kappa系数 DEVI 97.37 83.87 RGRI 73.09 26.18 VDVI 91.77 70.74 MGRVI - - NGRDI 85.76 45.11
Table 3. Accuracy evaluation of single tree segmentation in MCWS algorithm
View tableView in ArticleTable 3. Accuracy evaluation of single tree segmentation in MCWS algorithm
Sample plot Real tree TP FN FP R/% P/% F1/% Sample 1 89 78 11 8 87.6 90.7 89.1 Sample 2 152 145 7 12 95.3 92.3 93.8 Sample 3 73 63 9 7 87.5 90.0 88.7 Sample 4 162 140 21 15 86.9 85.8 86.4 Total 476 426 48 42 89.8 89.5 89.7
Table 4. Accuracy evaluation of single tree segmentation based on improved algorithm
View tableView in ArticleTable 4. Accuracy evaluation of single tree segmentation based on improved algorithm
Sample plot Real tree TP FN FP R/% P/% F1/% Sample 1 89 81 8 5 91.0 94.2 92.5 Sample 2 152 152 0 2 100 98.7 99.3 Sample 3 73 66 6 4 91.6 94.3 92.9 Sample 4 162 143 19 20 88.2 87.7 88.0 Total 476 442 33 31 93.0 93.4 93.2
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Zhen DAI, Rong HE, Hongtao WANG, Weisen BAI. Adaptive single tree extraction method based on fusion of airborne lidar and vegetation index[J]. Optics and Precision Engineering, 2023, 31(22): 3331
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Received: May. 29, 2023
Accepted: --
Published Online: Dec. 29, 2023
The Author Email: HE Rong (hero@hpu.edu.cn)
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