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Weak target detecting and tracking method in infrared image sequence

An infrared image, weak and small target technology, applied in character and pattern recognition, instruments, computer parts and other directions, can solve the problem of not providing detection performance, achieve good weak and small target detection performance, improve state estimation accuracy, and improve detection performance Effect

Inactive Publication Date: 2005-04-13
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

but does not give detection performance
In addition, it has not been applied to the field of infrared image detection and tracking. In the actual application of infrared images, there are still some key issues to be solved.

Method used

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  • Weak target detecting and tracking method in infrared image sequence
  • Weak target detecting and tracking method in infrared image sequence
  • Weak target detecting and tracking method in infrared image sequence

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Embodiment Construction

[0019] In order to better understand the technical solutions of the present invention, the implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, the actual infrared image first adopts mathematical morphology filtering technology to obtain the background image, and then estimates the variance of each pixel through the image sequence, and then performs image whitening preprocessing. The state of the target is estimated by the auxiliary particle filter method, and then the likelihood ratio test is used to judge whether the target exists or not. The specific implementation details of each part are as follows:

[0021] 1. Morphological filtering to remove background processing

[0022] The infrared image background is acquired by mathematical morphology filtering. The gray expansion and erosion of the input image f with the structural element b are respectively recorded a...

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Abstract

The invention discloses a weak target detecting and tracking method in infrared image sequence for infrared image processing field which comprises, obtaining image background through morphology filtration, subtracting image background from the original image, obtaining de-background image containing both target and noise, then carrying out image whitening pretreatment, proceeding follow-up initiation at tracking phase by means of projection converting method, proceeding destination status evaluation by employing subsidiary particle filtration in tracking sustaining phase, finally determining whether the judgment destination exists by means of likelihood ratio assumption checking method in detecting phase, thus obtaining the navigation track and detecting probability of the destination.

Description

technical field [0001] The invention relates to a method for detecting and tracking a target, in particular to a method for detecting and tracking weak and small targets in an infrared image sequence. It is used in the field of infrared image processing. Background technique [0002] Infrared imaging technology is favored for its advantages of good concealment, wide detection range, high positioning accuracy, strong ability to identify camouflage, long range, light weight, small size, low power consumption and reliability, and can be widely used in security surveillance, national defense, military and industry Automatic detection and other fields. [0003] As one of the key links of intelligent information processing, the detection and tracking method of infrared weak and small targets is a core technology of infrared search and tracking systems, precision guidance systems, infrared early warning systems, large field of view target monitoring systems, and satellite remote s...

Claims

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Application Information

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IPC IPC(8): G06K9/80
Inventor 敬忠良胡洪涛胡士强
Owner SHANGHAI JIAO TONG UNIV
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