A Real-time Two-dimensional Correlation Speed Measurement Based on Image
In order to implement two-dimensional moving objects non-contact and real-time speed measurements this paper ,we proposed a new method which was based on the characteristic of FPGA and a real-time twodimensional correlation speed measurement was proposed on image processing using high speed CMOS shown in figure l.Experimental installation was shown in figure 2,a cardboard with images which was fixed in electric control movement device was moving to simulate moving object,the CMOS image sensor gathered image signals of the cardboard and the image signals was output to FPGA after a serials pretreatment such as binaryzation etc.Logical operation insteaded mathematical operation on FPGA to implement two frames images cross-correlation operations as the formula (10) in this paper,and finally calculate the two-dimensional velocity.Through experiment result of table 1 we drawn an conclusion the accurarcy of the method in this paper was less than 1 pixel and the method can be used at a certain speed ranges of twodimensional, real-time speed measurement
CMOS image sensor two-dimensional correlation operations speed measurement FPGA
Zhang Yu-xin Xu Zheng-ping Liu Yu Ge Wen-qi
Changchun Institute of Optics, Fine Mechanics and Physics, The Chinese Academy of sciences Graduate Changchun Institute of Optics, Fine Mechanics and Physics, The Chinese Academy of sciences Graduate Department of Railway Technology Engineer, JiLin Railway Vocational and Technology College Jilin,,Ch Changchun Institute of Optics, Fine Mechanics and Physics, The Chinese Academy of sciences Changchun
国际会议
长春
英文
13-16
2010-08-24（万方平台首次上网日期，不代表论文的发表时间）