Table 1.
Theoretical and Actual Values of Pixels and Targets
D(m) | Tx/Ty (mm) | Theoretical Value Px/Py(mm) | Theoretical Value Nx/Ny | Actual Value Nx/Ny |
---|
2 | 60 | 0.48 |
|
|
3 | 60 | 0.32 |
|
|
4 | 60 | 0.24 |
|
|
5 | 60 | 0.192 |
|
|
Table 2.
Four Sets of
Values at 2 m
Y | ROI I—
(LSB) | ROI II—
(LSB) | ROI III—
(LSB) | ROI IV—
(LSB) |
---|
Initial Position | 1122.770 | 1095.718 | 1129.630 | 1106.132 |
1 mm | 1130.040 | 1103.862 | 1121.954 | 1093.774 |
2 mm | 1135.336 | 1105.680 | 1112.188 | 1080.762 |
3 mm | 1149.592 | 1124.100 | 1107.092 | 1072.432 |
4 mm | 1167.564 | 1139.150 | 1107.908 | 1069.044 |
5 mm | 1169.652 | 1141.906 | 1079.080 | 1029.712 |
6 mm | 1174.862 | 1147.730 | 1044.894 | 995.336 |
7 mm | 1178.076 | 1149.974 | 1015.486 | 964.388 |
8 mm | 1170.616 | 1146.008 | 978.600 | 922.194 |
9 mm | 1168.770 | 1144.814 | 941.610 | 880.270 |
10 mm | 1167.534 | 1143.788 | 898.824 | 840.310 |
Table 3.
Four Sets of
Values at 3 m
Y | ROI I—
(LSB) | ROI II—
(LSB) | ROI III—
(LSB) | ROI IV—
(LSB) |
---|
Initial Position | 1039.351 | 1047.563 | 1056.808 | 1048.461 |
1 mm | 1022.776 | 1061.988 | 1043.037 | 1037.318 |
2 mm | 1035.906 | 1052.865 | 1026.310 | 1018.910 |
3 mm | 1027.865 | 1101.461 | 985.020 | 995.776 |
4 mm | 1087.780 | 1096.441 | 974.751 | 970.710 |
5 mm | 1115.241 | 1112.584 | 948.531 | 947.943 |
6 mm | 1103.196 | 1105.735 | 936.302 | 928.249 |
7 mm | 1104.963 | 1097.988 | 889.367 | 889.273 |
8 mm | 1107.363 | 1105.057 | 871.037 | 862.735 |
9 mm | 1123.020 | 1107.527 | 860.686 | 852.098 |
10 mm | 1095.004 | 1164.584 | 841.380 | 843.861 |
Table 4.
Four Sets of
Values at 4 m
Y | ROI I—
(LSB) | ROI II—
(LSB) | ROI III—
(LSB) | ROI IV—
(LSB) |
---|
Initial Position | 810.120 | 772.264 | 840.056 | 762.016 |
1 mm | 790.816 | 750.320 | 827.744 | 752.328 |
2 mm | 806.728 | 766.232 | 825.216 | 741.424 |
3 mm | 785.936 | 747.160 | 802.928 | 720.872 |
4 mm | 791.760 | 756.784 | 783.688 | 702.736 |
5 mm | 784.016 | 749.624 | 764.376 | 688.960 |
6 mm | 804.560 | 768.288 | 764.624 | 678.440 |
7 mm | 844.928 | 812.432 | 753.400 | 669.488 |
8 mm | 863.520 | 840.144 | 745.448 | 655.240 |
9 mm | 855.016 | 820.544 | 695.040 | 610.840 |
10 mm | 836.792 | 803.832 | 670.592 | 587.504 |
Table 5.
Four Sets of ROI-
Values at 5 m
Y | ROI I—
(LSB) | ROI II—
(LSB) | ROI III—
(LSB) | ROI IV—
(LSB) |
---|
Initial Position | 602.313 | 589.900 | 638.138 | 685.598 |
1 mm | 597.650 | 579.300 | 620.813 | 656.825 |
2 mm | 623.138 | 582.788 | 619.275 | 639.100 |
3 mm | 627.880 | 597.650 | 614.076 | 628.700 |
4 mm | 585.163 | 556.525 | 598.863 | 560.240 |
5 mm | 644.724 | 608.931 | 586.000 | 548.831 |
6 mm | 664.091 | 661.862 | 577.393 | 540.891 |
7 mm | 666.660 | 642.842 | 559.867 | 525.862 |
8 mm | 627.088 | 592.993 | 544.697 | 507.031 |
9 mm | 643.368 | 621.404 | 536.631 | 492.743 |
10 mm | 663.667 | 669.489 | 522.583 | 481.743 |
Table 6.
K·Y Value Under Different Displacement Offset at 2 m
Y | 1 mm | 2 mm | 3 mm | 4 mm | 5 mm |
---|
K·Y | 0.00408 | 0.01084 | 0.02115 | 0.02894 | 0.04587 |
Y | 6 mm | 7 mm | 8 mm | 9 mm | 10 mm |
K·Y | 0.06472 | 0.08082 | 0.09860 | 0.11890 | 0.14127 |
Table 7.
K·Y Value Under Different Displacement Offset at 3 m
Y | 1 mm | 2 mm | 3 mm | 4 mm | 5 mm |
---|
K·Y | 0.00106 | 0.01053 | 0.03614 | 0.05782 | 0.08034 |
Y | 6 mm | 7 mm | 8 mm | 9 mm | 10 mm |
K·Y | 0.08454 | 0.10657 | 0.12129 | 0.13130 | 0.14559 |
Table 8.
K·Y Value Under Different Displacement Offset at 4 m
Y | 1 mm | 2 mm | 3 mm | 4 mm | 5 mm |
---|
K·Y | −0.01247 | 0.00201 | 0.00304 | 0.02047 | 0.02688 |
Y | 6 mm | 7 mm | 8 mm | 9 mm | 10 mm |
K·Y | 0.04303 | 0.07612 | 0.09760 | 0.12399 | 0.13196 |
Table 9.
K·Y Value Under Different Displacement Offset at 5 m
Y | 1 mm | 2 mm | 3 mm | 4 mm | 5 mm |
---|
K·Y | −0.04102 | −0.02128 | −0.00699 | 0.01804 | 0.04975 |
Y | 6 mm | 7 mm | 8 mm | 9 mm | 10 mm |
K·Y | 0.07359 | 0.09342 | 0.10081 | 0.11419 | 0.14068 |
Table 10.
Fitting Curve Parameter Value between K·Y and Displacement
Distance |
| SSE | R-square | RMSE |
---|
|
|
2 m | 0.01547 | −0.02358 | 0.0004652 | 0.9770 | 0.007626 |
3 m | 0.01635 | −0.03812 | 0.0003417 | 0.9902 | 0.006536 |
4 m | 0.01703 | −0.04239 | 0.0011770 | 0.9572 | 0.01156 |
5 m | 0.01762 | −0.06738 | 0.0004892 | 0.9860 | 0.00782 |
Table 11.
Pixel Size and Target Size
Measuring Distance | Single Pixel Size | FOV | The Target Size Corresponding to a Pixel (Measurement Accuracy) |
---|
2 m | 0.02 | 30° | 2.5 mm |
3 m | 0.02 | 30° | 3.75 mm |
4 m | 0.02 | 30° | 5 mm |
5 m | 0.02 | 30° | 6.25 mm |
Table 12.
Difference between the Theoretical Value and the Actual Value at 2 m
Theoretical Calculation Value
(mm) | Actual Value
(mm) |
(
) (mm) |
|
---|
1.029 | 1 | 0.029 | 0.0292 |
2.146 | 2 | 0.146 | 0.0729 |
2.850 | 3 | −0.150 | 0.0502 |
3.835 | 4 | −0.165 | 0.0413 |
4.885 | 5 | −0.125 | 0.0229 |
5.877 | 6 | −0.123 | 0.0205 |
6.847 | 7 | −0.153 | 0.0219 |
7.852 | 8 | −0.148 | 0.0185 |
9.160 | 9 | 0.160 | 0.0177 |
10.181 | 10 | 0.181 | 0.0181 |
Table 13.
Difference between the Theoretical Value and the Actual Value at 5 m
Theoretical Calculation Value
(mm) | Actual Value
(mm) |
(
) (mm) |
|
---|
0.903 | 1 | −0.097 | 0.0968 |
2.175 | 2 | 0.175 | 0.1374 |
3.209 | 3 | 0.209 | 0.0695 |
4.014 | 4 | 0.014 | 0.0035 |
5.206 | 5 | 0.206 | 0.0813 |
5.982 | 6 | −0.018 | −0.0029 |
6.897 | 7 | −0.103 | −0.0147 |
7.751 | 8 | −0.249 | −0.0561 |
8.863 | 9 | −0.137 | −0.0153 |
10.241 | 10 | 0.241 | 0.0241 |