A Processing Method of ATM Monitoring Video Image Under Weak Light Environment

Aiming at the conditions of that the quality of ATM video image easily affected under weak light environment, this paper presents two improved algorithms respectively for noise suppression and image enhancement in the video image preprocessing. Compared with traditional methods, the algorithms can get better precision and signal to noise ratio and keep further details while improving the contrast of image, so the image quality can be notably improved. The above algorithms only process the luminance component to ensure the efficiency.