All-weather colour camera white balance processing method and device

Abstract

The invention discloses an all-weather colour camera white balance processing method and device. The method comprises the following steps: the mapping relationship table of exposure parameters of images, the image brightness and the environment illumination is obtained through training; an image to be processed is acquired and the image brightness of the current image to be processed and corresponding exposure parameters are acquired, and the current environment illumination information is acquired according to the exposure parameters, the image brightness and the mapping relationship table; the infrared influence removing process is performed on the image to be processed according to the current environment illumination information and the current infrared light intensity information that detected on a real-time basis; and the white balance correction is performed on the processed image obtained through the infrared influence removing process. By adopting the method and device of the invention, the distortion problem caused by the reason that correction cannot be performed effectively due to the influences of infrared light in the automatic white balance process can be avoided, and at the same time, the brightness problem in the low illumination condition can be solved to make a color image having the advantage of high quality still can be obtained in the low illumination condition.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a white balance processing method and device for an all-weather color camera. Background technique [0002] Generally, video camera equipment such as a digital video camera and a digital still camera generally include: an optical lens, an image sensor, an image processing chip, an image transmission module, and an image display module. [0003] As we all know, objects of the same color will appear in different colors under the illumination of different light sources. For example, a gray object will appear yellow when illuminated by an incandescent lamp, and it will appear blue when illuminated by a cold light source. Since the human eye has an automatic color adjustment function based on such an environment, the human eye can restore the essential color of an object under different light sources. However, in such an environment, the output color after processing by the ...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem that the reddish output image in the existing method of using the dual-filter IR_CUT to achieve white balance correction makes it difficult to perform white balance correction and the problem of increased noise in the output image in a low-light environment, the purpose of the embodiments of the present invention is to Provided is an all-weather color camera white balance processing method and device, and an all-weather color camera that does not include IR_CUT, which can effectively correct the white balance of the output image to obtain a color image with bright colors and less image noise

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