Chinese Optics, Volume. 17, Issue 2, 278(2024)
Stereo matching algorithm based on multi-feature SAD-Census transformation
Fig. 4. Parallax maps of three cost calculation methods. (a) Traditional SAD-Census algorithms; (b) traditional SAD + improved Census algorithm; (a) the proposed algorithm
Fig. 7. Experimental results of 4 kinds of algorithms at different brightness levels
Fig. 8. Experimental results of different algorithms under noise interference
Table 1. Experimental parameter setting
View tableView in ArticleTable 1. Experimental parameter setting
Parameter Value Parameter Value б 2 λ 0.003 τ1 16 ε 0.001 τ2 4 ω 9×7 L1 30 β1 0.6 L2 15 β2 0.4 δ0 1
Table 2. Mismatch rate of different algorithms in the non-occluded region and all regions
(%) View tableView in ArticleTable 2. Mismatch rate of different algorithms in the non-occluded region and all regions
(%) Algorithm Tsukuba Venus Teddy Cones Avg Non all Disc Non all Disc Non all Disc Non all Disc Non all Disc GC-occ 1.19 2.01 6.24 1.64 2.19 6.75 11.20 17.40 19.80 5.36 12.40 13.00 4.84 8.50 11.45 SemiGlob 3.26 3.96 12.80 1.00 1.57 11.30 6.02 12.20 16.30 3.06 9.75 8.90 3.34 6.87 12.32 RTCensus 5.08 6.25 19.20 1.58 2.42 14.20 7.96 13.8 20.30 4.10 9.54 12.20 4.68 8.01 16.48 HCA 1.31 2.47 0.94 0.11 0.23 0.24 4.23 9.45 3.67 5.64 11.59 4.30 2.83 5.94 2.29 Cross-ScaleGF 2.38 2.85 8.40 1.13 1.98 9.26 7.05 14.9 16.80 3.32 11.00 7.99 3.47 7.68 10.61 GradAdaptWgt 2.26 2.63 8.99 0.99 1.39 4.92 8.00 13.10 18.60 2.61 7.67 7.43 3.46 6.19 9.99 Proposed algorithm 1.25 2.73 0.90 0.15 0.31 0.31 4.62 8.73 2.98 4.69 10.98 4.11 2.67 5.69 2.08
Table 3. Experimental results of three-dimensional distance measurement
View tableView in ArticleTable 3. Experimental results of three-dimensional distance measurement
序号 实际距离/mm 测量距离/mm 距离误差/mm 距离误差率/% 1 200 198.42 −1.58 0.79 2 300 302.55 2.55 0.85 3 400 403.76 3.76 0.94 4 500 495.05 −4.95 0.99 5 600 606.06 6.06 1.01 6 700 707.56 7.56 1.08 7 800 809.52 9.52 1.19 8 900 912.24 12.24 1.36
Table 4. Sample experimental results
View tableView in ArticleTable 4. Sample experimental results
样本序号 实际长度/mm 测量长度/mm 误差/mm 误差率/% 1 20 19.9575 −0.0425 −0.21 35 34.6144 −0.3856 −1.1 2 35 35.1649 0.1649 −0.47 50 49.9672 −0.0328 −0.06 3 5 4.9439 −0.0561 −1.12 15 14.7565 −0.2435 −1.62 4 20 20.3541 0.3541 0.71 30 29.5784 −0.4216 −1.41
Table 5. Thickness measurement results
View tableView in ArticleTable 5. Thickness measurement results
序号 实际厚度/mm 测量厚度/mm 测量误差/mm 绝对误差率/% 1 1.00 1.0105 0.0105 1.05 2 1.10 1.1235 0.0235 2.13 3 1.20 1.2335 0.0335 2.79 4 1.50 1.5563 0.0563 3.75 5 2.00 1.9346 −0.0654 3.27
Get Citation
Copy Citation Text
Fu-pei WU, Geng-nan HUANG, Yu-hao LIU, Wei-lin YE, Sheng-ping LI. Stereo matching algorithm based on multi-feature SAD-Census transformation[J]. Chinese Optics, 2024, 17(2): 278
Category:
Received: May. 8, 2023
Accepted: --
Published Online: Apr. 15, 2024
The Author Email:
