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Wavelet multi-scale crossover operation based sea-sky background infrared small target detection method

A technology of small target detection and cross calculation, which is applied in computing, computer components, image analysis, etc., can solve the problems of target information loss, unfavorable prominent targets, etc., and achieve the effect of accurate judgment, good effect and strong denoising ability

Inactive Publication Date: 2015-05-06
NANJING UNIV OF SCI & TECH
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Problems solved by technology

When the original mutual energy crossover algorithm is used to detect small targets in the sea-air background, since the target information is weak in the vertical direction in the sea-air background, if it is multiplied with the information in the horizontal direction without distinction, a large amount of target information will be lost. conducive to highlighting the target

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  • Wavelet multi-scale crossover operation based sea-sky background infrared small target detection method
  • Wavelet multi-scale crossover operation based sea-sky background infrared small target detection method
  • Wavelet multi-scale crossover operation based sea-sky background infrared small target detection method

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Embodiment

[0095] The experiment of the present invention is completed in a computer with a frequency of 2.24GHz and a memory of 2GB through MATLAB 2014a platform simulation.

[0096] 1. Before performing wavelet transformation on the original image, the number of layers of wavelet decomposition should be determined. The number of decomposition layers is selected through experimental results. When extracting low-frequency coefficient images for subsequent sea-antenna edge detection, first perform edge detection on low-frequency coefficient images at different scales, and select the scale that can extract the sea-antenna edge through edge detection as the experimental low-frequency scale. Edge detection is performed using the Prewitt operator. In the experiment, we first use Figure 6(a) to conduct the appropriate scale selection experiment. In order to highlight the suppression effect of wavelet low-frequency on high-frequency noise, the experiment adds Gaussian white noise with a varia...

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Abstract

The invention discloses a wavelet multi-scale crossover operation based sea-sky background infrared small target detection method and belongs to the technical field of image processing. The wavelet multi-scale crossover operation based sea-sky background infrared small target detection method comprises the steps of firstly conducting wavelet decomposition transformation on infrared images under the sea-sky background, then utilizing the low-frequency images obtained through wavelet decomposition to detect a sea antenna through horizontal edge detection and communication direction judgment, and finally conducting mutual energy crossover operation in a sea antenna region to obtain a target to be detected. The wavelet multi-scale crossover operation based sea-sky background infrared small target detection method has the advantages of being accuracy in sea antenna detection, good in adaptability, high in detection speed and good in sea clutter cloud layer interference eliminating capacity and can be widely applied to sea surface target detection, invasion warning, positioning tracking and other aspects.

Description

technical field [0001] The invention belongs to a method in the field of target detection, in particular to a method for detecting small infrared targets in the background of sea and air based on wavelet multi-scale cross operation. Background technique [0002] With the development of spectral detection technology, target detection and recognition systems based on image processing are widely used in security early warning, sea rescue, port ship detection, etc. Under the complex imaging background conditions, how the detection system autonomously discovers the target, detects and recognizes the target, and then tracks the target is the main direction of our research. Especially in the complex background environment of sea and air, how to complete the detection and extraction of small distant targets in the sea and sky noise with low signal-to-noise ratio has always been an urgent problem to be solved and optimized in target detection. [0003] At present, for the detection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06K9/32
CPCG06V10/25
Inventor 孔祥宇刘磊崔民杰李贺黄伟岳超
Owner NANJING UNIV OF SCI & TECH
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