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Wavelet analysis-based image rain-removing method and system

A wavelet analysis and wavelet decomposition technology, applied in the field of image processing, can solve the problems of the complexity of the algorithm and the real-time performance of the algorithm, and the effect of rain removal in dynamic scenes is not very ideal.

Inactive Publication Date: 2016-11-02
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 is not ideal for deraining effect on dynamic scenes, and the algorithm complexity and real-time performance of the algorithm cannot be balanced question

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  • Wavelet analysis-based image rain-removing method and system
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Embodiment Construction

[0043] 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.

[0044] 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. The image deraining method based on wavelet analysis of the embodiment of the present invention comprises the following steps:

[0045] Step S100: input video frame image;

[0046] Step S200: Perform wavelet multi-layer decomposition on the image according to wavelet analysis, and analyze the image information of each layer to obtain the layer containing background and color information, the layer containing raindrop noise, and the map con...

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Abstract

The invention belongs to the image processing technical field and relates to a wavelet analysis-based image rain-removing method and a wavelet analysis-based image rain-removing system. The wavelet analysis-based image rain-removing method includes the following steps that: image layer decomposition is carried out on a video frame image according to wavelet analysis, and the image information of all decomposition image layers are analyzed; step b, a fusion coefficient matrix is calculated, wavelet fusion is carried out on decomposition image layers with different image information according to the fusion coefficient matrix, and image reconstruction is carried out according to a fusion result, so that a rain removed image can be obtained; and step c, filtering processing is performed on the rain removed image by using anisotropic diffusion filtering. With the wavelet analysis-based image rain-removing method and system of the invention adopted, the interference of dynamic characteristics can be avoided, rain droplets can be removed more effectively and accurately, the usage scope of the rain removing algorithm can be extended, the algorithm can have a sound rain-removing effect even under heavy rain; filtering processing is performed on the rain removed image through the anisotropic diffusion filtering, so that the image can be clearer and more nature, and the rain removing algorithm can 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 received extensive attention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T5/73
Inventor 朱青松袁杰王磊
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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