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Infrared image enhancement and reestablishment method based on spectra inversion

An infrared image and inversion technology, which is applied in image enhancement, image data processing, instruments, etc., can solve the problems of changing the image space size, unable to enhance the energy characteristics of the region of interest in a targeted manner, and improve the detection and recognition rate. Effect

Inactive Publication Date: 2015-04-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Traditional methods often bring changes in the spatial size of the image, and cannot enhance the energy characteristics of the region of interest in a targeted manner

Method used

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  • Infrared image enhancement and reestablishment method based on spectra inversion
  • Infrared image enhancement and reestablishment method based on spectra inversion
  • Infrared image enhancement and reestablishment method based on spectra inversion

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0037] Step 1: Input an infrared image f(x,y) to be processed, its size is M×N;

[0038] Step 2: Construct the infrared image decomposition dictionary, and the atoms in the dictionary are sparse basis or orthogonal basis. In the present invention, adopt orthogonal wavelet (such as Haar wavelet) to construct dictionary;

[0039] Step 3: Perform j-scale wavelet decomposition on the read-in image:

[0040]

[0041] In wavelet decomposition, high frequency coefficients are calculated by:

[0042] W ψ ( j , m , n ) = 1 MN Σ x = 0 M - 1 ...

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Abstract

The invention discloses an infrared image enhancement and reestablishment method based on spectra inversion, belongs to the field of infrared image processing, and particularly relates to a new infrared image enhancement and detail reestablishment method and a new computational imaging method. The method uses a seismic trace high-resolution reestablishment thought in seismic signal processing proposed recently for reference to carry out the spectra inversion (reflected energy reconstruction) of infrared images. The method carries out the spectra inversion in dominant frequency bands by establishing an infrared reflected energy model and reflected energy odd-even decomposition model, and finally realizes the improvement of infrared image detail resolution ratio. The method can highlight the reflected energy details of weak and small targets on the basis of without increasing the image space resolution, thus improving the target contrast ratio and the energy feature. The method is beneficial for subsequent detection and tracking of the infrared weak and small targets, and has a wider application prospect.

Description

technical field [0001] The invention belongs to the field of infrared image processing, in particular to a new infrared image enhancement and detail reconstruction method and a new computational imaging method. This method draws on the idea of ​​high-resolution reconstruction of seismic traces in seismic signal processing recently proposed to perform "spectrum" inversion (reconstruction of reflected energy) of infrared images. Background technique [0002] Infrared imaging technology has been widely used in modern transportation, security monitoring and other fields. In the infrared detection system, infrared target detection and tracking is its key technology and core module. Since long-distance infrared imaging often brings defects such as low image contrast, low signal-to-noise ratio and signal-to-clutter ratio, small imaging area, and no shape and texture features, it is necessary to preprocess the collected infrared images to improve the detail resolution of the image. ...

Claims

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Application Information

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IPC IPC(8): G06T5/00
Inventor 彭真明王晓阳张帆钟露孔德辉江阳浦洋张倩
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA