Infrared dim target distance detection method based on optimization method

An optimization method and technology of weak and small targets, applied in the field of distance detection of infrared weak and small targets

Inactive Publication Date: 2015-04-01
NANJING UNIV OF SCI & TECH
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Problems solved by technology

However, there is no report on the single-station positioning technology for small targets.

Method used

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  • Infrared dim target distance detection method based on optimization method
  • Infrared dim target distance detection method based on optimization method
  • Infrared dim target distance detection method based on optimization method

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Embodiment

[0055] Next, the distance detection of the target is carried out on the infrared video with the weak target, figure 2 For the intercepted two frames of images, the size is 256×320, and there are weak and small targets in the complex cloud background. Firstly, the traditional tophat algorithm is used to segment the image and extract the target. The obtained results are as follows image 3 shown. Then use the method of the present invention, carry out preprocessing according to step 1, then press the singular point image obtained in step 2, then pass through step 3, obtain by the method for adaptive image segmentation Figure 4 ,Compared image 3 It can be found that the background cloud clutter has been suppressed to a large extent, and the false alarm has been controlled. Then, according to the track correlation method in step 4, the target is detected twice, and the position of the target is finally obtained, as shown in Figure 5 As shown, the background clutter points have...

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Abstract

The present invention discloses an infrared dim target distance detection method based on an optimization method. According to the method, a source image is pretreated by using median filtering, then Robinson filtering is adopted to carry out singularity detection, a threshold is subjected to self-adaptation adjustment to carry out image segmentation, an extracted target is adopted to carry out track association to finally obtain the target angle information, and a constructed optimization method is adopted to solve the target distance information through an optimal gradient method. According to the present invention, the target distance calculation is completed through a detector while a convergence rate is controlled.

Description

technical field [0001] The invention belongs to the distance detection and detection technology, in particular to a method for detecting distances of small and weak infrared targets based on an optimization method. Background technique [0002] Detecting weak and small targets from infrared image sequences and detecting their distance has always been one of the difficult problems in the field of target detection. The movement of the target and the scene will be reflected in the image sequence, and the target is analyzed, detected and extracted according to the image and motion characteristics of the target. Ranging the target in the image, passive ranging is of great significance in industrial and military applications, such as robot vision systems, space satellite tracking systems based on motion analysis, missile fire control systems, automatic aircraft landing and precision navigation systems, military It is widely used in fields such as the automatic analysis system of ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C3/00G06T7/00
Inventor 陈钱秦剑顾国华钱惟贤何伟基隋修宝张闻文路东明任侃于雪莲李宏哲
Owner NANJING UNIV OF SCI & TECH
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