Method for detecting point target in infrared image sequence

An infrared image and target detection technology, applied in the field of detection and identification of targets and point target detection in infrared image sequences, can solve the problems of inability to suppress background, reduce detection probability, and increase false alarm rate, and achieve noise elimination and low false alarm. Probability, effect of high target detection probability

Active Publication Date: 2013-11-27
SPACE STAR TECH CO LTD
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Problems solved by technology

[0004] When dealing with complex structured backgrounds, these algorithms often cannot effectively suppr

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  • Method for detecting point target in infrared image sequence
  • Method for detecting point target in infrared image sequence
  • Method for detecting point target in infrared image sequence

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Embodiment Construction

[0036] Combine below figure 1 , figure 2 , image 3 Specific embodiments of the present invention are further described in detail:

[0037] 1. Input the current frame image I, set the size of the bilateral filter to Size BL *Size BL , according to the following formula to calculate the estimated image noise standard deviation σ n .

[0038] σ n = π 2 * 1 6 * ( W - 2 ) * ( H - 2 ) * Σ imageI | I ( x , y ) * N | ...

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Abstract

Disclosed is a method for detecting a point target in an infrared image sequence. The method comprises the steps of (1) estimating a noise variance of a current frame image, adopting a bilateral filtering method to preprocess the image, (2) adopting the Robinson-Guard filtering method based on a template mid value to conduct filtering on the preprocessed image, (3) conducting binarization processing on the image, marking target points in the image, recording positional information of the target, (4) initializing parameters of a pipeline filter, (5) utilizing target positional information of first three frames for predicating the target position of the current frame, searching for the target, updating related information in a target position information sheet, conducting judgment to output the target information, and (6) repeating the steps until processing of all the images in the infrared image sequence is completed. According to the method for detecting the point target in the infrared image sequence, background suppression is effectively carried out, the false alarm probability is reduced, and the detection probability of the target is improved through the detection of the multi-frame sequence images.

Description

technical field [0001] The invention relates to a method for detecting a midpoint target in an infrared image sequence, which belongs to the field of infrared information processing and is used for detecting and identifying targets in an infrared image sequence. Background technique [0002] Infrared point target detection is one of the key technologies in applications such as precision guidance and space-based early warning. In infrared detection, the target presents a point shape at a long distance, without obvious shape information, and the amount of information on the imaging plane is very small, occupying only a few pixels, and is often submerged in the undulating background, which makes target detection and tracking very difficult. difficulty. Infrared point target detection is generally divided into three steps: background suppression, target segmentation and target detection. In the step of background suppression, the infrared image is filtered to reduce the interf...

Claims

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Application Information

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IPC IPC(8): G06K9/54
Inventor 李申阳李驰郝胜勇王健
Owner SPACE STAR TECH CO LTD
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