Image fog-removing method and device based on image segmentation

An image segmentation and image technology, applied in the field of computer vision, can solve problems such as edge effects, achieve contrast enhancement, avoid edge effects, and achieve high-quality effects

Inactive Publication Date: 2015-04-22
SHENZHEN INST OF ADVANCED TECH
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an image segmentation-based image defogging method

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  • Image fog-removing method and device based on image segmentation
  • Image fog-removing method and device based on image segmentation
  • Image fog-removing method and device based on image segmentation

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0023] In computer vision and computer graphics, foggy graphics are represented by:

[0024] I(x)=J(x)t(x)+A[1-t(x)] (1)

[0025] Among them, I refers to the observed image intensity, J refers to the light intensity of the scene without fog, A refers to the ambient light component, and t refers to the part of the light that is not scattered during the process of transmitting the light through the medium to the camera. It is the transmittance. The goal of dehazing is to recover J, A and t from image I.

[0026] figure 1 Shown is a schematic flow chart of an image s...

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Abstract

The invention provides an image fog-removing method and device based on image segmentation. The image fog-removing method includes the steps of obtaining foggy image information, conducting primary color image darkening on foggy images, and conducting calculation to obtain ambient light of the foggy images; generating matrixes the same as the foggy images in size for the foggy images, and enabling similar pixels to be set into one zone; conducting primary color image darkening on the zones and calculating the light transmittance of the pixels; according to the ambient light of the foggy images and the light transmittance, conducting calculation on the zones to conduct fog removing so as to obtain fog-free images obtained after fog removing. By means of the image fog-removing method, the fringe effect generated by fog removing through utilization of the dark primary color prior can be effectively avoided; in addition, by means of the method, the obtained fog-removed image quality is higher, the image contrast ratio is greatly strengthened, and the visual effect is greatly improved compared with the visual effect of original images.

Description

technical field [0001] The invention relates to the field of computer vision, in particular to an image segmentation-based image defogging method and device. Background technique [0002] With the continuous development of computer software and hardware technology, it has become possible to dehaze the scene images of foggy weather images, which in turn puts forward new requirements for the clarity and realism of the dehazed images. In foggy weather, due to the large number of particles such as water droplets in the atmosphere, as the distance between the object and the imaging device increases, the scattering effect of atmospheric particles on imaging gradually increases. This effect is mainly caused by two scattering processes: the first First, the reflected light on the surface of the object is attenuated due to the scattering of atmospheric particles when it reaches the imaging device; second, natural light enters the imaging device to participate in imaging due to the sc...

Claims

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Application Information

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IPC IPC(8): G06T5/00
Inventor 朱青松吴迪王磊
Owner SHENZHEN INST OF ADVANCED TECH
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