Signal lamp image processing method and system

Abstract

The present invention discloses a signal lamp image processing method and system. The method and system comprise: obtaining at least one low-exposure image and at least one normal-exposure image; performing color correction for a reddish pixel area of the at least one low-exposure image to obtain a low-exposure image after correction; and fusing of the low-exposure image after correction and the normal-exposure image to generate a fusion image. The low-exposure image after correction and the normal-exposure image are fused to generate the fusion image to allow the whole brightness of the fusion image to be unchanged; when color correction is performed, a region of interest is subjected to correction, a calculated quantity is greatly decreased, the reddish pixel area in the region of interest is corrected, and image processing can be accurate to a pixel level.

Description

technical field [0001] The invention belongs to the fields of computer image processing and video monitoring, and in particular relates to a signal lamp image processing method and system. Background technique [0002] With the continuous increase of urban motor vehicles, the traffic management department will install traffic signal light systems at urban traffic intersections to indicate the passage of motor vehicles, bicycles and pedestrians to guide traffic. In order to ensure that motor vehicles drive according to the signal lights and monitor violations at intersections, traffic management departments will also install video surveillance systems at these intersections to record violations of vehicles and pedestrians and serve as evidence for enforcement by law enforcement agencies. [0003] In the prior art, in the process of using the video monitoring system, the red traffic light in the video image often has distortion phenomenon. For example, at night when the ambie...

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Problems solved by technology

[0005] The patent document "A method for correcting the discoloration and enlargement of red lights in pictures of vehicles running red lights at night", the publication number is 102663892A, this method can only deal with the problem of abnormal red lights caused by overexposure at night, and cannot deal with the problem of yellowish red lights. This method cannot be adaptive to multiple scenes, and its correction error rate is extremely high

[0006] The patent document "A Signal Light Image Processing Method and Its Device" has a publication number of 103679733A. This method has a large amount of calculation, low scene adaptability, and is easy to locate errors and cause correction failure. The error rate of this method is also high, and the indirect Bring troubles to the effective and fast law enforcement of law enforcement units

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