Laser & Optoelectronics Progress, Volume. 57, Issue 12, 122804(2020)
Influence of Distance Factor onthe Scanning Accuracy of Terrestrial Laser
Figures & Tables(7)
Fig. 1. Experiment of laser intensity and scanning distance. (a) Schematic; (b) real scene; (c) intercepting target data
Fig. 2. Experimental scene. (a) Indoor experimental scene; (b) schematic diagram of four-color cardboard combination; (c) lawn scene; (d) ground scene (inside red line frame)
Fig. 3. RGB value of point cloud intensity for lawn scene before and after correction. (a) Before correction; (b) modified sectional polynomial model; (c) modified Taylor interpolation polynomials model; (d) modified the mixed model of sectional Gaussian function and polynomial
Fig. 4. RGB value of point cloud intensity for ground scene before and after correction. (a) Before correction; (b) modified sectional polynomial model; (c) modified Taylor interpolation polynomials model; (d) modified the mixed model of sectional Gaussian function and polynomials
Table 1. Main parameters of FARO Focus3D 120
View tableTable 1. Main parameters of FARO Focus3D 120
Emitted power /mW Wavelength /nm Beam diameter /mm Field of view /(°)×(°) Beam divergence /(°) Rang /m 20 905 3.8 360×305 0.009 0.6—120
Table 2. Reflection intensity data fitting table
View tableTable 2. Reflection intensity data fitting table
Fitting function Parameter First half Parameter Second half SSE R-square RMSE SSE R-square RMSE Polynomial 1 6173 0.5747 38.16 1 90.62 0.956 5.35 2 6089 0.5892 38.25 2 84.32 0.963 6.467 3 82.230 0.9933 5.394 3 6.546 0.998 2.409 4 52.091 0.9974 5.120 - - - - 5 7.982 0.9993 2.562 - - - - Power function - - - - 1 81.23 0.961 5.097 Exponential - - - - 1 89.53 0.958 5.431 function - - - - 2 53.15 0.978 7.289 Fourier function 1 7.354 0.9989 1.811 1 84.97 0.963 9.249 Gaussian 1 7.522 0.9995 1.954 - - - - function 2 0.023 1 0.120 1 85.43 0.961 6.451 Taylor polynomial Whole curve Interpolation 0.0209 1 0.098 Last two points are reserved to calculate the root mean square error of the fitting function
Table 3. Distribution of original intensity and corrected intensity
View tableTable 3. Distribution of original intensity and corrected intensity
Item Blue Red Green White Lawn scene Ground scene Left Right Left Right Left Right Left Right R/m min 5.947 5.963 5.941 5.935 5.942 5.947 5.954 5.941 1.948 1.998 max 5.971 5.944 5.965 5.964 5.971 5.962 5.993 5.963 30.25 10.10 I min 1943 1942 1941 1943 1944 1945 1938 1948 1648 1325 max 1950 1950 1952 1955 1951 1952 1953 1956 2035 1789 A min A max 1862 1865 1861 1866 1868 1875 1869 1873 1867 1871 1866 1869 1869 1878 1869 1874 1825 1911 1465 1568 B min B max 1949 1955 1952 1959 1949 1957 1943 1951 1954 1960 1954 1962 1956 1968 1956 1963 1836 1955 1546 1689 C min C max 1785 1793 1785 1792 1761 1767 1759 1770 1730 1735 1728 1736 1726 1738 1725 1734 1767 1965 1398 1584 D min D max 1788 1799 1756 1781 1683 1690 1650 1661 1684 1691 1729 1735 1779 1796 1750 1764 1694 2005 1368 1656 Mean Original 1946 1946 1947 1948 1947 1948 1949 1952 1895 1548 A 1864 1865 1871 1870 1869 1867 1874 1872 1866 1543 B 1952 1958 1953 1948 1957 1958 1966 1958 1903 1563 C 1789 1786 1765 1768 1734 1724 1735 1729 1869 1458 D 1793 1768 1686 1658 1689 1732 1786 1758 1889 1435 STD Original 2.357 0.122 0.090 1.269 2.162 0.766 0.423 4.112 669.5 469.3 A 0.202 0.042 0.008 0.135 0.246 0.198 0.097 0.695 35.66 45.44 B 0.268 0.079 0.028 0.684 0.682 0.654 0.165 1.115 78.35 82.5 C 1.857 0.102 0.064 0.789 1.121 0.725 0.221 4.356 98.76 101.5 D 2.684 0.165 1.35 1.147 1.684 0.754 0.554 4.451 389.2 205.7
Tools
Get Citation
Copy Citation Text
Meijie Yang, Jun Liu. Influence of Distance Factor onthe Scanning Accuracy of Terrestrial Laser[J]. Laser & Optoelectronics Progress, 2020, 57(12): 122804
Paper Information
Category: Remote Sensing and Sensors
Received: Sep. 22, 2019
Accepted: Nov. 2, 2019
Published Online: Jun. 3, 2020
The Author Email: Liu Jun (junliurs@sues.edu.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20