Infrared video heterogeneity correction method based on space-time three-dimensional filtering

The invention discloses an infrared video non-uniformity correction method based on space-time three-dimensional filtering, and belongs to the field of infrared video processing. The implementation method comprises the following steps: acquiring two adjacent frames of infrared images from an infrared video sequence; initializing a correction coefficient; updating according to a space updating rule to obtain infrared image heterogeneity; calculating a local mean value of the frame of infrared image; subtracting the local mean value from the frame of infrared image to obtain a residual image; updating according to a time updating rule to obtain infrared image heterogeneity; the method is obtained through adaptive fusion according to a criterion of minimizing a mean square error, and infrared video non-uniformity correction based on space-time three-dimensional filtering is realized through adaptive fusion of a space filtering result and a time sequence filtering result. According to the method, the non-uniformi