ADAPTIVE NON-UNIFORMITY COMPENSATION USING FEEDFORWARD SHUNTING

摘要

A system and method adapted for use with a focal plane array (22) of electromagnetic energy detectors to receive first and second frames of image data from electromagnetic energy received from at least a portion of a scene. The first frame is a focused frame and the second frame is an unfocused frame. In a feed forward path the system (10) compares the first frame to the second frame and provides an error signal in response thereto. In a main path, the system multiplies at least a portion of the second frame of image data with the error signal to provide a noise error corrected output signal. In the preferred embodiment, the error signal is scaled prior to being multiplied by the second frame. An anti-mean (high pass) filter (48) is provided to remove dome shading effects from the frames of image data.