Sub-pixel location of circle target and its application
Xiang Peng · Infrared and Laser Engineering · 2008
Target location is a crucial part of 3D shape measurement, because it determines the measuring precision of system to a great extent. The target with circle is applied widely, because of its advantages of high location precision and easily being recognized. In this paper, a method of sub-pixel circle target location with complex background was proposed. Many techniques were used, such as Canny edge detection, target recognition, sub-pixel edge detection etc. Simulation experiment proves that the location uncertainty is less than 0.02 pixel. An example of circle target in the range image registration is presented lastly.