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Infrared small target detection method based on template filter and false alarm suppression in cloud background

A small target detection and template technology, applied in image analysis, image enhancement, instruments, etc., can solve problems such as high false alarm rate, poor robustness, and inability to apply video sequence processing, achieving low false alarm rate and low complexity. , The effect of reducing the detection false alarm rate

Inactive Publication Date: 2019-01-22
NANJING UNIV OF SCI & TECH
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Problems solved by technology

However, this method has a high false alarm rate and poor robustness, and cannot be applied to the processing of video sequences.

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  • Infrared small target detection method based on template filter and false alarm suppression in cloud background
  • Infrared small target detection method based on template filter and false alarm suppression in cloud background
  • Infrared small target detection method based on template filter and false alarm suppression in cloud background

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Embodiment Construction

[0019] combine figure 1 , the infrared small target detection method based on template filtering and false alarm suppression under the cloud background of the present invention, for a single frame image, the spatial domain operation of template filtering is used, first, the image is subjected to maximum median filtering to remove significant noise to complete image preprocessing, and secondly Use Robinson template filtering to suppress the background and highlight the target, and then divide the original image into cloud areas. In the cloud area, the result after Robinson filtering is binarized with a low threshold, and the non-cloud area is processed with a high threshold. Finally, Using the principle of "non-maximum value suppression in the neighborhood", the binarized result further eliminates multiple "pseudo-target points" generated by the same target, so as to complete the "coarse detection"; Time domain operation processing is adopted, that is, the track correlation is ...

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Abstract

The invention discloses an infrared small target detection method based on template filtering and false alarm suppression under cloud background. First, the image is subjected to maximum median filtering to remove significant noise to complete image preprocessing. Secondly, Robinson template filtering is used to suppress the background and highlight the target. , and then divide the original image into cloud areas. In the cloud area, the Robinson filtered result is binarized using a low threshold, while in the non-cloud area, a high threshold is used. Finally, the binarized result is further eliminated. Multiple "pseudo target points" generated by the same target are used to complete "coarse detection"; adjacent frame images that have been processed in the spatial domain continue to be processed by time domain operations to complete "fine detection", thereby realizing the detection of small infrared targets. The present invention adds a constant false alarm suppression algorithm to the inter-frame track correlation, which greatly reduces the detection false alarm rate.

Description

technical field [0001] The invention belongs to the technical field of infrared image detection and processing, in particular to a small infrared target detection method based on template filtering and false alarm suppression under cloud background. Background technique [0002] Infrared small target detection is a core technology in infrared search and tracking system, large field of view target detection system, satellite remote sensing, disaster warning, fire and disaster relief and other systems. Because the infrared sensor is affected by factors such as atmosphere, sea surface radiation, operating distance, and detector noise, the long-distance target is small in size on the infrared image, and even appears point-like; in addition, the signal-to-noise ratio of the image is low, and the background Usually, it is more complicated, and the target is easily overwhelmed by noise and background clutter, which makes the detection of small infrared targets more difficult. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T5/10G06T5/00
CPCG06T5/10G06T2207/10048G06T5/70
Inventor 万敏杰顾国华钱惟贤张晓敏田杰陈钱任侃隋修宝何伟基张闻文
Owner NANJING UNIV OF SCI & TECH
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