Regular Building Outline Extraction Based on Multi-Level Minimum Bounding Rectangle

Gang Li; Ke Liu; Hongchao Ma; Liang Zhang; Jialin Yuan

doi:10.3788/LOP230801

Laser & Optoelectronics Progress, Volume. 61, Issue 8, 0837013(2024)

Regular Building Outline Extraction Based on Multi-Level Minimum Bounding Rectangle

Gang Li¹, Ke Liu^2、*, Hongchao Ma³, Liang Zhang⁴, and Jialin Yuan³

¹State Key Laboratory of Geo-Information Engineering, Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, Shaanxi , China

²School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan 430048, Hubei , China

³School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, Hubei , China

⁴Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, Hubei , China

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Figures & Tables(10)

Fig. 1. Boundary points and grouping. (a) Boundary points; (b) boundary points grouping

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Fig. 2. Initial MBR. (a) Boundary points of building 1; (b) initial MBR reference of building 1; (c) initial MBR of building 1 using minimum area method; (d) boundary points of building 2; (e) initial MBR reference of building 2; (f) initial MBR of building 2 using maximum overlapping method

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Fig. 3. Initial MBR calculation. (a) MBR calculation; (b) initial MBR

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Fig. 4. Multi-level MBR and outline extraction. (a) Level 1 MBR; (b) level 2 MBR; (c) level 3 MBR; (d) multi-level MBR; (e) outline

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Fig. 5. Experimental datasets

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Fig. 6. Initial MBR extraction comparison.（a）Minimum area method；（b）maximum overlapping method；（c）proposed method

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Fig. 7. Consuming time of initial MBR extraction

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Fig. 8. Outline extraction results of the proposed method. (a) Building A; (b) Building B; (c) Building C; (d) Building D; (e) Building E; (f) Building F; (g) Building G; (h) Building H

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Table 1. Building corner accuracy
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Table 1. Building corner accuracy
Building $R M S E_X$ $R M S E_Y$ $R M S E$
A 0.631 0.647 0.904
B 0.396 0.557 0.684
C 0.215 0.499 0.543
D 0.595 0.557 0.822
E 0.583 0.516 0.779
F 0.365 0.423 0.559
G 0.463 0.535 0.708
H 0.452 0.512 0.683

Table 2. Accuracy comparison of different methods
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Table 2. Accuracy comparison of different methods
Method $R M S E$
Method in Ref.［20］ 0.87
Method in Ref.［21］ 0.87
Method in Ref.［22］ 0.93
Method in Ref.［23］ 0.70
Method in Ref.［24］ 0.83
Proposed method 0.71

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Gang Li, Ke Liu, Hongchao Ma, Liang Zhang, Jialin Yuan. Regular Building Outline Extraction Based on Multi-Level Minimum Bounding Rectangle[J]. Laser & Optoelectronics Progress, 2024, 61(8): 0837013

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