Rain removing method and system for single image

A single image, color image technology, applied in the field of image processing, can solve problems such as inability to process color images

Pending Publication Date: 2014-10-22
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0004] Based on this, it is necessary to provide a single image deraining method and system for the problem that the traditional single image deraining method ca

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  • Rain removing method and system for single image
  • Rain removing method and system for single image
  • Rain removing method and system for single image

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[0071] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0072] figure 1 It is a flowchart of a method for removing rain from a single image in an embodiment. Such as figure 1 As shown, the method for removing rain from a single image includes the following steps:

[0073] Step 102: Convert the RGB color image to Lab color space.

[0074] Because the brightness of the covered pixels is not only affected by raindrops, but also by the background. Consider that the camera exposure time is T, assuming that the time for raindrops to cover a certain pixel during this period is τ, and τ is much less than the camera exposure time T. The rain line brightn...

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Abstract

The invention relates to a rain removing method and system for a single image. The method comprises the following steps: converting an RGB color image into a Lab color space unit; extracting an L channel expressing the image brightness in the Lab color space unit; carrying out rain removing processing on the L channel; combing the L channel processed by rain removing with an a channel and a b channel and converting the Lab color space unit after combination into an RGB color space unit so as to obtain an RGB color image after rain removing processing. With the method and system, the RGB image is converted into the Lab color space unit; only the L channel is processed by rain removing and the L channel processed by rain removing is combined with the a channel and the b channel; and conversion is carried out to obtain an RGB image. Therefore, rain removing processing of the single color image is realized; the image color distortion is prevented; and the usage range of the rain removing algorithm of the single image is expanded.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method and system for removing rain from a single image. 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. Repairing the video image polluted by raindrops is beneficial to the further processing of the image, including the improvement of the technical performance of image-based target detection, recognition, tracking, segmentation and monitoring. [0003] There are many traditional rain removal algorithms, such as video image rain removal algorithms based on skewness calculation, K-means clustering, Kalman filter, dictionary learning and sparse coding, guided filtering, and brightness difference between frames. Among them, there ...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T3/00
Inventor 朱青松徐波王磊
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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