Adaptive non-uniformity correction algorithm based on multi-point correction

In order to realize the IRFPA non-uniformity (NU) correction with fast convergence speed and high precision, a new method to correct the non-uniformity in infrared images was introduced. The new algorithm took into account a linear equation between the excusion and corrected data along with the variation of the application surrounding temperature, adaptive correction factor according to the principle of least square. According to the practical application, this algorithm has the advantage of the strong ability to eliminate image degradation, fast convergence speed and high precision. This can meet the need of project practicality in the field of fire control of optics and electrics, infrared imaging seeking.