Aiming at the problem of traditional vision guided
AGV(automated guided vehicle) positioning accuracy, an improved dimensional
code precision positioning method is proposed. This method uses the
two-dimensional code after the addition of frame processing as a positioning
reference, the datum model is established by using the dimension of each frame
sample. Through the extraction of the image of the two-dimensional code
rectangle contour, determine the center coordinates of the rectangular region;
then, the unified coordinate system can be got by coordinate rotation
transformation. At last, calculating the error through the center point,
achieve precise positioning. Experimental results show that, position once, it can
improve the AGV positioning accuracy to 1 mm by this method.
LI Zhao, SHU Zhi-bing.
Research on AGV Vision Precision Positioning Technology by an Improved Two-Dimensional Code[J]. Control Engineering of China, 2019, 26(6): 1049-1054