This paper evaluates a pixel nonuniformity correction technique based upon gain and off-set compensation for CCD imagers. For hardware simplicity, a first-order linear model was examined in this paper. The statistical analysis of the uniformities is discussed. The original and the corrected picture of a gray scale test target are used as the example to evaluate the final results. Major improvements in sensor uniformity and the produced image quality can be achieved.
To R. Hsing,
"Correction Of Pixel Nonuniformities For Solid-State Imagers", Proc. SPIE 0292, Processing of Images and Data from Optical Sensors, (7 December 1981); doi: 10.1117/12.932834; https://doi.org/10.1117/12.932834