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Method for fusing visible image and infrared image

A fusion method and infrared image technology, applied in the fusion field of visible light image and infrared image, can solve the problems of poor foreground detection, low recall rate of infrared domain and visible light domain, low precision and so on.

Inactive Publication Date: 2014-05-07
STATE GRID CORP OF CHINA +1
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AI Technical Summary

Problems solved by technology

Foreground detection in visible light images is usually poor, so the accuracy is very low
Therefore, when these domains are fused, the accuracy drops, and the recall of the infrared and visible domains is always low

Method used

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  • Method for fusing visible image and infrared image
  • Method for fusing visible image and infrared image
  • Method for fusing visible image and infrared image

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Embodiment Construction

[0046] Synchronization and Registration in Visible and Infrared Domains

[0047] Temporal synchronization is achieved by manually marking obvious cues that coexist in the two domains and computing the frame difference between them. Spatial registration was achieved by manually selecting corresponding points on frames at the beginning of the two domains and computing the morphology matrix using a least mean square optimization method.

[0048] Background modeling and foreground detection

[0049] Because the SG (Single Gaussian) method is simple, fast, and has high accuracy and recall, the SG method is used in background modeling. Each channel is modeled separately for each pixel. Calculate the mean, variance and median of the background model using the most recent frame (I med ). To minimize the outlier effect, with the help of the median image, use the I med A Gaussian distribution centered at (x,y) calculates weights for each pixel:

[0050] (1)

[0051] here Ind...

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Abstract

The invention discloses a method for fusing a visible image and an infrared image. According to the method, expanded foreground of an infrared domain is used to act as an initial mask for visible light and a gray scale image, then infrared foreground and mask visible light foreground are fused so as to realize composition of complementary regions from different domains, mask processing is carried out on the infrared foreground by using the fused information, connected regions in a foreground image acquired from results are extracted out to act as candidate targets, and finally, an active contour model is applied to each of the connected regions in the infrared domain so as to detect the boundary of the target. According to the method, complementary information in the visible image and the infrared image are extracted to realize fusion of the images. Compared with other methods, a better recall rate can be acquired.

Description

technical field [0001] The invention relates to an image fusion method based on complementary information of visible light and infrared images, which is used to fuse visible light and infrared images of the same scene, and can be used for identification of high-voltage equipment in substations. Background technique [0002] Visible light cameras that produce visible light images require external lighting. Infrared cameras that produce infrared images can be used day and night, but infrared images lack information such as texture and color. Due to the complementary characteristics of visible light cameras and infrared cameras, the combination of the two can improve the performance of object detection applications. However, both the visible and infrared domains have their own problems. In the visible light domain, sudden lighting changes, the presence of shadows, and poor visibility at night can cause visible light image problems. Infrared images also suffer from low signal...

Claims

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Application Information

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IPC IPC(8): G06T5/50
Inventor 李智勇胡昊刘同旭朱晟周艳王改英孟涛
Owner STATE GRID CORP OF CHINA
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