The present invention relates to an image system and method for enhancing the visibility of an image, and more particularly, to an image system for improving visibility of an image and a method for improving the visibility of a reduced image due to impurities in the air such as fog, smoke, The present invention relates to an image system and a method for improving the visibility of a fog / night image in a luminance-color-difference signal color coordinate system that provides an image with improved visibility in real time in a low-illuminance image such as an image. According to the above description, it is possible to provide an image having improved visibility in real time through the same calculation processing for a low-illuminance image such as a night image or a dark indoor image as well as an image in which visibility is lowered due to impurities in the air such as fog, smoke, .
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