Abstract:

The light source,photosensitive chip and operating temperature of the CIS may lead to partial color in the banknote image acquisition,which affects the performance of the recognition algorithm.Color correction method for banknote image based on iterative algorithm is proved.Equivalent circle method and Gamma transaction are used concretely.These methods relieve the interference of the partial color,increase the efficiency of the engineering technical personnel,and improve the performance of the recognition algorithm.

Key words: banknote image;color detection;color correction;iterative algorithm