Abstract: In this paper, scene based nonuniformity correction algorithms for the infrared images are discussed. The quality of infrared images gets affected due to spatial fixed pattern noise in IRFPA, and it is mainly caused by nonuniformity of the detectorsí pixel to pixel variation. For the infrared focal plane arrays image uniformity is necessary. To correct this nonuniformity, various methods are presented in recent years. Some of them i.e. NN-NUC, CS-NUC, IR-NUC and GE-NUC are discussed here. We concentrate on the main contributions of the methods and their advantages and disadvantages. Also we compare these methods to distinguish the better method to eliminate ghost artifacts.

Keywords: IRFPA, Nonuniformity, Nonuniformity correction methods, Scene based nonuniformity correction algorithms, Elimination of ghost artifacts.