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Defogging restoration method based on image decomposition

An image and scene image technology, applied in the field of defogging and restoration based on image decomposition, can solve the problems of inaccurate transmittance estimation and poor self-adaptation, and achieve good processing effect and strong self-adaptive ability

Active Publication Date: 2021-08-24
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In order to solve the problems of inaccurate estimation of transmittance and poor self-adaptation when prior information fails in the defogging and restoration method, the present invention provides a defogging and restoration method based on image decomposition

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  • Defogging restoration method based on image decomposition
  • Defogging restoration method based on image decomposition
  • Defogging restoration method based on image decomposition

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Embodiment Construction

[0025] combine figure 1 and figure 2 In this embodiment, the method for defogging and restoration based on image decomposition is described. The specific implementation process of this method is as follows: figure 1 shown. The attenuated reflected light weakens the incident light to the imaging system, drowns out the detail information and color information of the image, and reduces the imaging contrast. Atmospheric light participating in imaging enters the imaging field of view, causing the high-frequency components of the image to be suppressed and the low-frequency components to be highlighted, which further leads to the loss of image details and the degradation of contrast and clarity.

[0026] In this embodiment, based on the atmospheric scattering imaging model as shown in the following formula:

[0027]

[0028] Among them, I(x) is the foggy scene image, J(x) is the foggy scene image, A is the global atmospheric light, t(x) is the atmospheric transmittance, J(x)t...

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Abstract

The invention discloses a defogging restoration method based on image decomposition, relates to the technical field of digital image processing, and solves the problems of inaccurate transmittance estimation and poor self-adaption when prior information fails in an existing defogging restoration method. The defogging restoration method is according to an atmospheric scattering model. According to the algorithm, a minimum channel image of a foggy image is decomposed into a sparse attenuation part and a low-rank atmospheric light part, a transmittance image with rich details is obtained through accurate estimation of the sparse atmospheric light part, smooth filtering processing is carried out on the transmittance image through guided filtering, and accurate transmittance estimation can be achieved. The algorithm processing effect is good, and the adaptive capacity is high.

Description

technical field [0001] The invention relates to the technical field of digital image processing, in particular to a method for defogging and restoring based on image decomposition. Background technique [0002] Outdoor visible light optical imaging system The optical imaging system is often affected by natural weather conditions such as fog and haze. Due to the scattering, absorption and reflection effects of suspended particles in the atmosphere, the imaging sensor cannot collect clear high-quality images or image sequences. It seriously affects the subsequent work of target recognition, tracking, registration, segmentation, etc., and limits the effectiveness of outdoor imaging equipment to a large extent. [0003] In recent years, major traffic accidents, road traffic interruptions, and flight delays or cancellations have occurred frequently due to reduced visibility and reduced visual quality caused by severe weather such as smog. As a normalized weather, smog has attrac...

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Application Information

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IPC IPC(8): G06T5/00
CPCG06T5/73G06T5/77G06T5/70
Inventor 毕国玲司国良何斌石俊霞赵莹
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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