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Infrared weak and small target detection method based on time-space domain background suppression

A technology of background suppression and weak and small targets, which is applied in image data processing, instruments, calculations, etc., can solve the problem of high false alarm rate, and achieve the effect of reducing the false alarm probability.

Active Publication Date: 2015-01-21
SHANGHAI RONGJUN TECH
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Problems solved by technology

[0006] Aiming at the problem of high false alarm rate in the detection of sequence infrared moving weak and small targets under the complex background with low signal-to-noise ratio, the present invention proposes a method for detecting moving targets in infrared sequence images combined with time and space domains

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[0043]Hereinafter, the invention will now be described more fully with reference to the accompanying drawings, in which various embodiments are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0044] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0045] refer to figure 1 , the specific implementation steps of the present invention are as follows:

[0046] The specific implementation steps of this method are as follows:

[0047] Step 1. Perform time-domain filtering on the first N frames of the sequence infrared image to suppress background clutter, Figure 4 (a) is a frame in a sequence of infrared images.

[0048...

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Abstract

The invention belongs to the field of infrared image processing, and mainly relates to an infrared weak and small target detection method based on time-space domain background suppression. The infrared weak and small target detection method is used for achieving the aim of infrared movement weak and small target detection in a complicated background and includes the steps that firstly, stable background noise waves in a space domain are suppressed through guiding filtering; secondly, slowly-changed backgrounds in a time domain are suppressed with a gradient weight filtering method on the time domain through target movement information in an infrared image sequence; thirdly, the time domain background suppression result and the space domain background suppression result are fused to obtain a background-suppressed weak and small target image; finally, the image is split through a self-adaptation threshold value, and a weak and small target is detected. By means of the infrared weak and small target detection method, during target detection, space grey information of the infrared weak and small target is used, time domain movement information of the target is further sufficiently used, the background noise waves are suppressed in the time domain and the space domain, and therefore the movement weak and small target detection performance in the complex background is greatly improved.

Description

technical field [0001] The invention belongs to the field of infrared image processing, and mainly relates to an infrared weak and small target detection method based on background suppression in time and space domain. Background technique [0002] In the infrared search and track system (IRST), the incoming target is far away from the detector, and usually appears as a few pixels in the complex background in the infrared image. At the same time, due to atmospheric attenuation and interference, the distance between the target and the background in the infrared image The contrast and signal-to-noise ratio are low, which brings difficulties for subsequent object detection. How to accurately and stably detect targets from infrared images with low contrast and low signal-to-noise ratio has become a key technology in IRST. [0003] In recent years, due to the great significance of infrared detection technology in the military, many researchers have conducted in-depth research on...

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T7/269G06T2207/10048G06T2207/20024
Inventor 秦翰林李佳延翔周慧鑫牟媛宗靖国韩姣姣曾庆杰郝静雅倪曼刘上乾
Owner SHANGHAI RONGJUN TECH
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