CMOS array imaging method of coordinated multichannel based on drift angle adjusting mechanism

Although the existing method of rotation of each sensor can improve the matching accuracy of the drift angle,it results in the discontinuity of the image synthesized by the detector with optical butting on the focal plane. In order to solve the above problems, an electronic imaging system based on CMOS image sensor GMAX3265 and FPGA is designed. The system uses the windowing mode of CMOS image sensor to Real-time clipping the nonlinear part of the image synthesized by adjacent detectors, thus forming a continuous image strip. Firstly, the difference between the traditional drift angle compensation method and the slice rotation drift angle compensation method is compared and analyzed when the detector adopts optical butting. Secondly, the number of cutting rows is calculated and the cutting precision is analyzed. Finally, the electronic system is completed through the overall system design and driving timing design. The experimental results show that when the rotation angle difference between adjacent detectors is 0.1 °, the ratio of error pixels to total pixels is 0.1165%, which does not lose too much image and improves image continuity. © 2021 Editorial Board of Journal of Jilin University (Engineering and Technology Edition). All right reserved.