Rain and fog removing method and device based on video image

Abstract

The invention provides a rain and fog removing method and device based on a video image. The method includes the following steps: acquiring a to-be-defogged video, and extracting a corresponding foggy video image frame from the to-be-defogged video; constructing a rain and fog separation algorithm, and obtaining a corresponding rain and fog range from the foggy video image frame through the rain and fog separation algorithm; separating a reflection image from the foggy video image frame according to the rain and fog range to serve as a to-be-processed image; and processing the to-be-processed image through a contrast stretching method, obtaining the processed images, and combining the processed images into a rain and fog removed video. According to the method and device, the corresponding rain and fog range can be acquired from the rain and fog video image frame by constructing the rain and fog separation algorithm, so that rain and fog can be accurately separated from the rain and fog video image frame, the overall contrast of the processed video image frame is improved through a contrast stretching mode, and the defogging efficiency of the whole video processing is improved.

Description

technical field [0001] The present invention relates to the technical field of computer software, and in particular, to a method and device for removing rain and fog based on video images. Background technique [0002] Fog video sharpening is an important problem in the field of computer vision. In the case of foggy days, due to the reduced visibility of the scene, the features such as the contrast and color of the target in the video frame are attenuated, so it cannot meet the needs of the outdoor video work system to accurately extract image features. Therefore, how to automatically and real-time eliminate the influence of fog on scene objects in video frames has important theoretical research significance and practical application value. [0003] At present, most video image defogging methods have certain problems, and the technology is not mature enough. When defogging video images, often because of the large amount of computation, the defogging speed is relatively slow...

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Problems solved by technology

[0003] At present, most video image defogging methods have certain problems, and the technology is not mature enough. When defogging video images, the speed of defogging is often slow and the effect is not good because of the relatively large amount of calculation, so it is urgently needed. A method and device for removing rain and fog based on video images, which can improve the efficiency of video defogging

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