Image rain removing method based on wavelet analysis and system

Abstract

The invention belongs to the image processing technology field, and particularly relates to an image rain removing method based on a wavelet analysis and a system. The image rain removing method based on wavelet analysis comprises steps of performing wavelet multilayer decomposition on a video frame image according to wavelet analysis, analyzing image information of all image layers and detecting the image layer containing rain droplet noise, c determining a rain droplet contamination degree coefficient according to the brightness characteristic of the rain droplet, calculating a fusion coefficient matrix according to the rain droplet contamination degree coefficient, performing wavelet fusion on the image layer containing various image information according to the fusion coefficient matrix, and performing image reconstruction through the fusion result to obtain the rain removing image. The invention can avoid the interference of the dynamic characteristic, can more effectively and accurately remove rain droplet, can improve the usage scope of the algorithm, enables the algorithm to have a sound rain-removing effect even under the heavy rain, performs defogging operation on the rain removing image, optimizes the visual effect of the image and enables the algorithm to be more practical.

Description

technical field [0001] The invention belongs to the technical field of image processing, in particular to an image rain removal method and system based on wavelet analysis. Background technique [0002] Rain has a great impact on image imaging, which will cause image blur and information coverage. The direct result is that the clarity of video images will decrease, and the digital processing of video images will also be affected by this and the performance will decrease. Restoring the video image polluted by raindrops is beneficial to the further processing of the image, including the performance improvement of image-based target detection, recognition, tracking, segmentation and monitoring technologies. Moreover, image deraining technology based on wavelet analysis has wide application prospects in the fields of modern military, transportation and security monitoring. [0003] The research on the characteristics of raindrops in video images has been widely concerned by the...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides an image deraining method and system based on wavelet analysis, aiming to solve the problem that the existing image deraining technology cannot take into account the processing speed and accuracy of various scenes, and the deraining effect for dynamic scenes is not very ideal, and The technical problem that the complexity of the algorithm and the real-time performance of the algorithm cannot be balanced

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