Image rain removing method based on wavelet analysis and system

A wavelet analysis and image technology, applied in the field of image processing, can solve problems such as the inability to balance algorithm complexity and algorithm real-time performance, the inability to balance the processing speed and accuracy of various scenes, and the unsatisfactory effect of removing rain in dynamic scenes, etc.

Inactive Publication Date: 2015-12-23
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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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 a

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  • Image rain removing method based on wavelet analysis and system
  • Image rain removing method based on wavelet analysis and system
  • Image rain removing method based on wavelet analysis and system

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[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0047] see figure 1 , is a flowchart of a method for removing rain from an image based on wavelet analysis according to an embodiment of the present invention. Because of the uncertain direction, intensity and appearance of rain, it is difficult to establish a unified physical model in the spatial domain. However, analysis in the frequency domain will not be affected by these uncertain characteristics. From the perspective of frequency domain, the present invention adopts wavelet multi-layer decomposition and wavelet fusion method to distinguish the level of raindrop noise, defines the rule of wa...

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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...

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Application Information

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IPC IPC(8): G06T5/50
Inventor 朱青松李佳恒王磊
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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