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Method for detecting infrared target by using local difference of structure similarity

A technology of structural similarity and local structure, applied in the field of infrared target detection, which can solve the problems of large random noise and non-uniform interference in infrared images.

Inactive Publication Date: 2013-04-03
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, infrared images have large random noise and non-uniform interference, which are also difficulties that must be overcome when performing target detection and analysis

Method used

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  • Method for detecting infrared target by using local difference of structure similarity
  • Method for detecting infrared target by using local difference of structure similarity
  • Method for detecting infrared target by using local difference of structure similarity

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Experimental program
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Embodiment Construction

[0036] The effectiveness of this target detection algorithm is directly tested using several infrared target images.

[0037] Use the method of the present invention to process detection targets, such as figure 1 As shown, the input infrared image containing the target f , the final target detection result can be obtained. by Figure 4a (defined as target image f ) as an example:

[0038] (1) For the target image f Any pixel in f (i, j), calculate the difference value of the structural similarity between it and the surrounding area D (i, j), after calculating pixel by pixel, get the same as f Structural similarity difference map of the same size D .

[0039] (a) For the entire image f , in order to obtain the same f Figures of the same size (A, B) D , need to first f Periodic continuation is performed to meet the calculation requirements of boundary pixels.

[0040] Such as figure 2 As shown, the central image is subjected to cycle boundary method to obtain the...

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Abstract

The invention discloses a method for detecting an infrared target by using local difference of structure similarity. The method comprises the following steps of: (1) gradually solving the difference of the structure similarity of each pixel so as to obtain a local different map of the structure similarity; and (2) dividing the local difference of the structure similarity by using a self-adaptive threshold value to detect the targets. In the method, the brightness, contrast and structural characteristics are combined, so that the detection result meets the requirements; and only the target images to be detected are input, the real position map where the targets are positioned can be obtained. The method can be used for detecting and identifying military targets and civilian targets; and the method is wide in application range.

Description

technical field [0001] The invention relates to optical image processing technology, in particular to an infrared target detection method using local similarity differences. Background technique [0002] Object detection technology has been widely used in civilian and military fields. Common such as various traffic navigation, navigation aids, disaster prevention and rescue, military reconnaissance, early warning, guidance, navigation and other equipment based on visible light cameras, low-light cameras, infrared thermal imaging cameras, radars, laser detectors, and ultrasonic detectors. [0003] The purpose of object detection based on digital image is to extract the object from the background image from the sequence image. Effective segmentation of object regions is very important for post-processing such as object classification, tracking, and behavior understanding, because the subsequent processing only considers the pixels corresponding to the object regions in the im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62G06T7/00
Inventor 赵巨峰冯华君徐之海李奇陈跃庭
Owner ZHEJIANG UNIV