Abstract: An infraredvisible binocular camera can not only perceive the temperature of the targets, but also obtain the color and texture information of them, which has gotten more and more application in daily life and industrial production. Considering the different imaging mechanism between infrared and visible camera, different calibration targets are needed in general calibration. In this paper, we propose a pixellevel fast calibration method for the infraredvisible binocular system. By designing a unique circular target rig, onestep calibration is realized. The calibration precision is below 1 pixel in visible camera pixel coordinate system. This method can be used to the large batch and low cost civil infrared production calibration system.

Key words: infraredvisible binocular system, camera calibration, circular target rig, image fusion