Color control method for low-illumination of CCTV systems and CCTV systems with a color control at low intensity

摘要

The present invention relates to a CCTV system having a color control function in low illumination and a color control method in low illumination of a CCTV system. In a CCTV system having a lens, an image sensor, an image signal processor and a codec, the image signal processor comprises A digital slow shutter controller that controls the exposure time so that you can take a picture of the subject, and a function that suppresses noise with digital signal processing to set the range in which an afterimage is not left in low-light mode, and determines the degree of noise attenuation A digital noise attenuator that performs a digital noise attenuator, maintains the LCD mode during the day, and an automatic gain controller to increase the low-light sensitivity. It is characterized in that it is equipped with an automatic gain controller that performs a function of automatically adjusting the . Therefore, even if the CCTV operates under low light and goes through the steps of increasing exposure time, increasing sensitivity in low light, and removing noise, colors can be identified and identification of moving objects is not hindered. Reliability and the like according to the purpose of use can be significantly improved.