Calibration method and calibration device for focal plane polarization imaging detector

The invention discloses an error calibration method for a focal plane polarization imaging detector, which comprises the following steps of: aligning a detector to be calibrated with incident light, arranging a polarization element on a light path of the incident light, rotating the angle of the polarization element, accurately controlling the vibration direction of the incident light, and calibrating the error of the detector to be calibrated. Calibration is completed after a polarized light image collected by a detector is compared with a theoretical value of incident light, and the method is characterized in that key feature points in the image are automatically extracted and matched, polarization information of pixels in the image obtained by a polarization imaging detector is read, and the average value of each pixel point is solved, so that detection white noise is effectively weakened, and the detection accuracy is improved. Compared with a traditional manual processing method, the automatic processing