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Visible light enhancement method based on polarized imaging

A polarization imaging and visible light technology, applied in the field of image processing, can solve the problems of limited visible light image enhancement capability and dependence on a single image, and achieve the effect of rich detail information, easy recognition, and complete target outline

Inactive Publication Date: 2016-10-19
NANJING UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

Although the above-mentioned methods have a certain enhancement effect on images, they all rely on a single image, and their enhancement capabilities for poor-quality visible light images are very limited.

Method used

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  • Visible light enhancement method based on polarized imaging
  • Visible light enhancement method based on polarized imaging
  • Visible light enhancement method based on polarized imaging

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Embodiment Construction

[0029] combine Figure 9 , the present invention based on polarization imaging visible light image enhancement method, the implementation steps are as follows:

[0030] Step 1, obtain the target polarization parameter image. Before obtaining the target polarization parameter image data, it is necessary to take the original light intensity image such as figure 2 As shown, the camera used in the experiment of the present invention is a visible light black-and-white camera, and the shooting scene is a metal plate coated with a khaki camouflage coating placed under a tree covered with fallen leaves. From figure 2 It is difficult to find hidden camouflaged targets in the game.

[0031] Use the polarization imaging system to carry out polarization imaging on the target, and obtain the linear polarization component light intensity image I with the angles between the light transmission axis of the polarizer and the horizontal direction in the polarization imaging system being 0°,...

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Abstract

The invention discloses a visible light image enhancement method based on polarized imaging. Polarization information is obtained from an image by utilizing a polarized imaging method, the polarization information is clustered in a Poincare sphere to obtain a polarization characteristic image, and the polarization characteristic image is fused with a light intensity image to obtain a final enhanced image. According to the invention, highlighting of objective polarization characteristic is more effectively, the image includes a more complete objective area, the edge is clear, detail information is abundant, and an object in the visible light band can be detected and identified rapidly effectively.

Description

technical field [0001] The invention belongs to image processing technology, in particular to a visible light enhancement method based on polarization imaging. Background technique [0002] Visible light images are easily affected by external environmental factors. For artificial targets hidden in the natural background, the low contrast between the target and the background in the image makes the target difficult to be found. With the development of camouflage technology, the emergence of new camouflage coatings makes the detection and recognition of artificial targets more difficult. The research on polarization imaging detection at home and abroad has found that the polarization state information of the reflected or radiated light waves of objects can effectively distinguish scatterers with different materials, different surface shapes, and different conductivity. Under certain conditions, there is a large difference between the polarization information of the camouflage...

Claims

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Application Information

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IPC IPC(8): G06T5/00
Inventor 赵蓉顾国华杨蔚周骁骏
Owner NANJING UNIV OF SCI & TECH
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