TY - GEN
T1 - Longitudinal resolution improving of 3D range imaging Lidar through redundant detection and intensity distribution analysis
AU - Kong, Weiguo
AU - Chen, Siying
AU - Zhang, Yinchao
AU - Chen, He
AU - Qiu, Zongjia
AU - Wang, Yuzhao
AU - Liu, Peng
AU - Ni, Guoqiang
PY - 2011
Y1 - 2011
N2 - 3D detection is an important application of Lidar. A 3D range imaging Lidar system is presented in this paper. The longitudinal resolution of 3D range imaging Lidar is poor because of the length of pulse width and gate time of ICCD, which together determine the detected longitudinal range from a single laser pulse shot. To improve the longitudinal resolution, power distribution received by one pixel of ICCD is analyzed, and a method is put forward. In this method, by setting the gate time and step interval of delay time to the value of pulse width, one object will be detected in two neighboring images, and it can be precisely located through analysis of the pixel values in the two images. The locating precision of this method is verified by experiments, and results show that the longitudinal resolution is improved by ten times, that is from 1.65m to about 0.15m. Meanwhile, the detection efficiency is reduced only a little.
AB - 3D detection is an important application of Lidar. A 3D range imaging Lidar system is presented in this paper. The longitudinal resolution of 3D range imaging Lidar is poor because of the length of pulse width and gate time of ICCD, which together determine the detected longitudinal range from a single laser pulse shot. To improve the longitudinal resolution, power distribution received by one pixel of ICCD is analyzed, and a method is put forward. In this method, by setting the gate time and step interval of delay time to the value of pulse width, one object will be detected in two neighboring images, and it can be precisely located through analysis of the pixel values in the two images. The locating precision of this method is verified by experiments, and results show that the longitudinal resolution is improved by ten times, that is from 1.65m to about 0.15m. Meanwhile, the detection efficiency is reduced only a little.
KW - 3D range imaging Lidar
KW - intensity distribution
KW - longitudinal resolution
KW - redundant detection
UR - https://www.scopus.com/pages/publications/79960692361
U2 - 10.1117/12.889263
DO - 10.1117/12.889263
M3 - Conference contribution
AN - SCOPUS:79960692361
SN - 9780819486813
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Videometrics, Range Imaging, and Applications XI
T2 - Videometrics, Range Imaging, and Applications XI
Y2 - 25 May 2011 through 26 May 2011
ER -