Laser & Optoelectronics Progress, Volume. 57, Issue 3, 030701(2020)
Measurement Method of Gun’s Jump Angle Based on Improved Least-Squares
Figures & Tables(7)
Fig. 1. Schematic of gun’s jump angle measurement based on improved least-squares
Fig. 3. Comparison of circle center fitting algorithms for muzzle images. (a) Original image; (b) result of least squares circle fitting algorithm; (c) result of radius difference accumulation minimization algorithm
Table 1. Comparison of calculation results of the two center positioning algorithms for muzzle images
View tableTable 1. Comparison of calculation results of the two center positioning algorithms for muzzle images
Measurement No. 1 2 3 4 5 6 7 8 x /pixel 511.15 511.05 511.05 511.15 510.90 511.10 511.15 510.90 Algorithm proposed y /pixel 511.20 511.15 511.20 510.95 511.20 511.05 510.85 511.20 Δx /pixel 0.15 0.05 0.05 0.15 0.10 0.10 0.15 0.10 Δy /pixel 0.20 0.15 0.20 0.05 0.20 0.05 0.15 0.20 x /pixel 511.55 512.00 511.65 511.40 511.20 511.40 511.60 511.30 Least squares algorithm y /pixel 511.80 511.45 511.20 511.85 511.30 511.65 511.30 511.65 Δx /pixel 0.55 1.00 0.35 0.40 0.20 0.40 0.60 0.30 Δy /pixel 0.80 0.45 0.20 0.15 0.30 0.65 0.30 0.35
Table 2. Comparison of jump angle calculation results
View tableTable 2. Comparison of jump angle calculation results
Measurement No. 1 2 3 4 5 6 7 8 Ideal values Jump angle /(') θ 5.32 5.54 5.25 5.26 5.92 5.17 5.91 5.62 Center deviation /pixel Δx 0.15 0.05 0.05 0.15 0.10 0.10 0.15 0.10 Algorithm proposed Δy 0.20 0.15 0.20 0.05 0.20 0.05 0.15 0.20 Jump angle /(') θ 5.46 5.25 5.35 5.40 5.43 5.10 5.78 5.71 Center deviation /pixel Δx 0.55 1.00 0.35 0.40 0.20 0.40 0.60 0.30 Least squares algorithm Δy 0.80 0.45 0.20 0.15 0.30 0.65 0.30 0.35 Jump angle /(') θ 6.23 6.26 5.68 4.83 6.63 6.03 5.14 5.12
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Man Jiang, Jun Wang, Bojun Du, Haifeng Wang, Haisong Chen. Measurement Method of Gun’s Jump Angle Based on Improved Least-Squares[J]. Laser & Optoelectronics Progress, 2020, 57(3): 030701
Paper Information
Category: Fourier Optics and Signal Processing
Received: Jun. 24, 2019
Accepted: Jul. 29, 2019
Published Online: Feb. 17, 2020
The Author Email: Jiang Man (1347787405@qq.com), Wang Jun (wjyhl@126.com)
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