Author Affiliations
College of Physics and Electronic Electrical Engineering, Xiangnan University, Chenzhou 423000, Hunan , Chinashow less
Fig. 1. Cumulative projection of space plane lines
Fig. 2. Measurement system structure
Fig. 3. Schematic diagram of linear CCD accumulation line acquisition
Fig. 4. Schematic diagram of bi-linear array CCD solution
Fig. 5. Real system structure
Fig. 6. Histogram equalization remapping
Fig. 7. Data comparison before and after remapping
Fig. 8. Process of getting cumulative lines
Fig. 9. Target plane positioning
Fig. 10. Distribution of calibration cumulative projection lines
Fig. 11. Measurement error distribution
Line No. | 1st point in line (x, y) /(cm, cm) | 2nd point in line (x, y) /(cm, cm) | Projection pixel of line on CCD1 |
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1 | (15.40, 10.00) | (17.10, 19.80) | 39 | 2 | (14.00, 2.00) | (16.80, 11.50) | 40 | 3 | (13.80, 5.20) | (15.20, 15.10) | 44 | 4 | (11.20, 6.00) | (11.90, 15.90) | 57 | 5 | (15.70, 4.60) | (18.80, 19.20) | 33 | 6 | (16.30, 0.70) | (19.00, 10.20) | 23 | 7 | (7.10, 1.50) | (5.90, 11.30) | 81 | 8 | (7.40, 8.00) | (6.80, 17.80) | 77 | 9 | (4.00, 6.00) | (2.20, 16.00) | 95 | 10 | (5.60, 9.00) | (4.00, 18.90) | 85 | 11 | (3.10, 6.10) | (1.00, 13.00) | 100 | 12 | (2.00, 2.00) | (0.60, 7.00) | 111 | 13 | (3.40, 2.00) | (2.00, 8.00) | 103 | 14 | (10.30, 3.80) | (10.00, 13.80) | 61 | 15 | (9.90, 5.60) | (9.30, 15.50) | 65 | 16 | (9.10, 5.90) | (8.60, 15.80) | 68 | 17 | (8.10, 7.00) | (7.90, 16.90) | 73 | 18 | (5.10, 6.00) | (4.50, 15.70) | 89 | 19 | (1.00, 1.00) | (0.70, 2.00) | 119 | 20 | (19.00, 3.00) | (19.40, 4.50) | 12 |
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Table 1. Information of cumulative projection lines on CCD1
Line No. | 1st point in line (x, y) /(cm, cm) | 2nd point in line (x, y) /(cm, cm) | Projection pixel of line on CCD2 |
---|
1 | (8.00, 9.30) | (18.00, 8.70) | 61 | 2 | (5.80, 7.00) | (15.30, 5.00) | 47 | 3 | (1.00, 17.50) | (8.00, 19.10) | 111 | 4 | (5.00, 16.10) | (14.90, 17.90) | 98 | 5 | (10.20, 13.70) | (18.00, 14.50) | 82 | 6 | (9.20, 9.80) | (19.00, 9.30) | 63 | 7 | (7.00, 7.90) | (18.00, 6.60) | 54 | 8 | (8.10, 4.90) | (17.80, 2.00) | 39 | 9 | (6.20, 6.00) | (16.00, 4.10) | 44 | 10 | (1.00, 3.10) | (6.00, 19.20) | 21 | 11 | (2.00, 16.80) | (11.00, 19.00) | 105 | 12 | (1.00, 17.30) | (7.00, 19.00) | 110 | 13 | (5.30, 16.80) | (15.00, 1.90) | 101 | 14 | (2.00, 2.30) | (3.00, 1.90) | 19 | 15 | (1.00, 2.10) | (4.00, 1.00) | 15 | 16 | (8.20, 8.30) | (18.00, 7.00) | 57 | 17 | (9.00, 10.20) | (19.00, 9.60) | 66 | 18 | (9.00, 12.50) | (18.00, 13.30) | 77 | 19 | (4.00, 19.00) | (6.00, 19.80) | 115 | 20 | (1.00, 18.30) | (5.00, 19.80) | 118 |
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Table 2. Information of cumulative projection lines on CCD2
Point No. | Real (x, y) /(cm, cm) | Measured (x, y) /(cm, cm) | Pixel position of CCD1 and CCD2 | Error /cm |
---|
1 | (4.00, 2.00) | (4.06, 2.10) | 99/22 | 0.12 | 2 | (6.00, 2.00) | (6.15, 1.96) | 87/25 | 0.16 | 3 | (3.00, 4.00) | (3.10, 4.00) | 102/30 | 0.10 | 4 | (5.00, 4.00) | (4.79, 3.90) | 93/32 | 0.23 | 5 | (7.00, 4.00) | (7.20, 3.60) | 80/34 | 0.45 | 6 | (4.00, 6.00) | (3.80, 6.10) | 96/42 | 0.22 | 7 | (6.00, 6.00) | (6.20, 5.90) | 84/44 | 0.22 | 8 | (3.00, 8.00) | (3.00, 8.10) | 98/52 | 0.10 | 9 | (5.00, 8.00) | (5.10, 7.98) | 88/53 | 0.10 | 10 | (7.00, 8.00) | (7.20, 8.10) | 78/55 | 0.22 |
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Table 3. Measured result in first part
Point No. | Real (x, y) /(cm, cm) | Measured (x, y)/(cm, cm) | Pixel position of CCD1 and CCD2 | Error /cm |
---|
1 | (14.00, 2.00) | (14.04, 1.89) | 39/35 | 0.12 | 2 | (16.00, 2.00) | (16.03, 1.94) | 27/37 | 0.07 | 3 | (13.00, 4.00) | (13.00, 3.69) | 47/41 | 0.31 | 4 | (15.00, 4.00) | (15.15, 3.87) | 35/43 | 0.20 | 5 | (17.00, 4.00) | (16.86, 3.81) | 25/44 | 0.24 | 6 | (14.00, 6.00) | (14.00, 5.60) | 43/49 | 0.40 | 7 | (16.00, 6.00) | (16.15, 5.98) | 32/51 | 0.15 | 8 | (13.00, 8.00) | (13.19, 7.96) | 49/57 | 0.19 | 9 | (15.00, 8.00) | (15.20, 7.85) | 39/58 | 0.25 | 10 | (17.00, 8.00) | (16.99, 7.89) | 30/58 | 0.11 |
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Table 4. Measured result in second part
Point No. | Real (x, y) /(cm, cm) | Measured (x, y) /(cm, cm) | Pixel position of CCD1 and CCD2 | Error /cm |
---|
1 | (3.00, 12.00) | (2.88, 12.20) | 95/75 | 0.23 | 2 | (5.00, 12.00) | (5.00, 12.32) | 86/75 | 0.30 | 3 | (7.00, 12.00) | (7.17, 12.25) | 77/75 | 0.30 | 4 | (4.00, 14.00) | (4.00, 14.40) | 89/87 | 0.40 | 5 | (6.00, 14.00) | (6.04, 14.20) | 81/85 | 0.20 | 6 | (3.00, 16.00) | (2.90, 16.10) | 92/98 | 0.14 | 7 | (5.00, 16.00) | (5.10, 16.20) | 84/96 | 0.22 | 8 | (7.00, 16.00) | (7.20, 16.10) | 76/94 | 0.22 | 9 | (4.00, 18.00) | (3.90, 18.30) | 87/109 | 0.32 | 10 | (6.00, 18.00) | (5.95, 18.21) | 80/106 | 0.21 |
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Table 5. Measured result in third part
Point No. | Real (x, y) /(cm, cm) | Measured (x, y) /(cm, cm) | Pixel position of CCD1 and CCD2 | Error /cm |
---|
1 | (13.00, 12.00) | (13.20, 11.90) | 51/73 | 0.22 | 2 | (15.00, 12.00) | (15.30, 11.90) | 42/73 | 0.32 | 3 | (17.00, 12.00) | (17.00, 11.88) | 34/73 | 0.12 | 4 | (14.00, 14.00) | (14.10, 13.90) | 48/81 | 0.14 | 5 | (16.00, 14.00) | (16.10, 14.03) | 40/81 | 0.10 | 6 | (13.00, 16.00) | (13.10, 16.07) | 53/90 | 0.12 | 7 | (15.00, 16.00) | (15.10, 16.07) | 45/89 | 0.12 | 8 | (17.00, 16.00) | (17.20, 16.03) | 37/88 | 0.20 | 9 | (14.00, 18.00) | (14.10, 17.90) | 50/97 | 0.14 | 10 | (16.00, 18.00) | (16.00, 18.00) | 43/96 | 0.00 |
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Table 6. Measured result in fourth part