Calibration method for CCD camera imaging application

The invention provides a calibration method for CCD camera imaging application, which comprises a calibration method for the pixel-response nonuniformity of a CCD camera, and a calibration method for reversely calculating the absolute intensity of a corresponding light source by utilizing the known absolute magnitude of an integrating sphere uniform light source and the pixel gray of an image captured by the corresponding CCD camera, wherein the calibration method for pixel-response nonuniformity automatically obtains a compensation matrix of a full-width image according to the gray information of each pixel on the image, and the calibration method for absolute intensity reversely calculates the quantitative information of the functional relation of the absolute intensity of the corresponding light source through the exposure time of the image and the gray of each pixel on the image. The calibration method for pixel-response nonuniformity and the calibration method for absolute intensity can follow the changes of the exposure time of the CCD camera and the pixel gray of the image to automatically calibrate pixel-response nonuniformity and the absolute intensity of the corresponding light source according to the calibration functional relation obtained in the calibration method.