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Image defogging system and method based on the same

An image and image data technology, applied in the field of image dehazing technology, can solve the problems of slow dehazing processing speed, inability to meet real-time performance, and high complexity of image fusion algorithms

Pending Publication Date: 2021-06-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] In order to solve the problem that the complexity of the image fusion algorithm in the prior art is high, resulting in slow dehazing processing speed and unable to meet the real-time performance, the present invention proposes an image defogging method, which can realize the effect of real-time dehazing

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  • Image defogging system and method based on the same
  • Image defogging system and method based on the same
  • Image defogging system and method based on the same

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Embodiment Construction

[0029] In order to facilitate those skilled in the art to understand the technical content of the present invention, the content of the present invention will be further explained below in conjunction with the accompanying drawings.

[0030] A kind of image defogging fusion method of the present invention, at first builds the framework of whole FPGA design, and FPGA structure is as follows figure 1 Shown:

[0031] The foggy image data source is input from the HDMI interface, and after being decoded by the ADV7611 decoding chip, the image data is transmitted to the FPGA.

[0032] The sampling clock of the image pixel data read through HDMI is not synchronized with the clock of the DDR buffer data module, and a FIFO module needs to be added in the middle for clock asynchronous processing and data buffering.

[0033] The DDR module caches the frame-by-frame foggy image data that is read. When a complete frame of image data is cached, this frame of data is used in the image defog...

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Abstract

The invention discloses an image defogging system and a method based on thesame, which are applied to the field of image processing and aim at solving the problem that the defogging processing speed in the prior art is low and the real-time performance cannot be met. The image defogging method comprises the following steps: firstly, solving an initial transmissivity through a dark channel prior algorithm, and carrying out multi-scale Gaussian convolution through a retinex algorithm to obtain a rough transmissivity; performing linear fusion on the initial transmissivity and the rough transmissivity to obtain a final transmissivity; and substituting the transmissivity into an atmospheric scattering mathematical model to realize image defogging.

Description

technical field [0001] The invention belongs to the field of image processing, in particular to an image defogging technology. Background technique [0002] Smog is a common phenomenon on land and sea. In foggy and hazy weather, there are many large-sized atmospheric particles. They not only absorb and scatter the reflected light of the scene, but also scatter some atmospheric light to the camera. As a result, the images acquired by the camera are of reduced quality, usually with lower contrast and less visibility. This will seriously affect the vision system, especially the visible light vision system. Due to the degradation of the image, it is difficult to detect objects and obstacles in the image. This is bad for automatic video processing such as feature extraction, object tracking and object recognition. It is also one of the leading causes of accidents in the air, at sea and on the road. [0003] The integrated image defogging algorithm can obviously restore and ...

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Application Information

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IPC IPC(8): G06T5/00G06T5/50
CPCG06T5/50G06T2207/20221G06T2207/10024G06T5/73
Inventor 卢有亮唐豪陈勇罗建平郑伟生
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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