Blind pixel detection and compensation for infrared linear detector

An integrated algorithm dealing with blind pixel was proposed to reduce the stripe noise and non-uniformity noise of the infrared linear detector which affected by ambient temperature and its operation time. First, the bad pixel channel was detected based on the final output data of the detector, and then the offset value was adjusted based on the position and number of the bad pixel channel, and an accurate bad pixel positioning to 4806 pixel was finished according to the structure characteristics of the detector array. Non-uniformity correction of the bad pixel channel was completed in the end. In this paper, FPGA processing module was taken as the core of the whole algorithm to complete the real-time acquisition and processing of infrared images. The test results show that the qualities of correction images are all very well, and the algorithm proposed in this paper has a good real-time performance and portability.