Terahertz image stripe noise processing method and system

A stripe noise and processing method technology, applied in image data processing, image enhancement, image analysis, etc., can solve problems such as the inability to effectively eliminate stripe noise in terahertz images

Active Publication Date: 2017-12-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] In order to solve the technical problem in the prior art that the fringe noise of the terahertz image cannot be effectively eliminated, the present invention further provides a method and system for processing the fringe noise of the terahertz image

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  • Terahertz image stripe noise processing method and system
  • Terahertz image stripe noise processing method and system
  • Terahertz image stripe noise processing method and system

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Embodiment Construction

[0023] In order to solve the technical problem that the fringe noise of the terahertz image cannot be effectively eliminated in the prior art, the present invention further provides a method and system for processing the fringe noise of the terahertz image, which can effectively eliminate the fringe noise of the terahertz image .

[0024] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] A method for processing streak noise in a terahertz image provided by an embodiment of the present invention, such as figure 1 As shown, it includes: S101, performing Fourier transform on the obtained terahertz image data to obtain a frequency domain image representing the frequency domain characteristics of the terahertz image data; S102, performing a first band-rejection on the frequency doma...

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Abstract

The present invention belongs to the terahertz detection array or infrared detection array imaging field and discloses a terahertz image stripe noise processing method and system. The method includes the following steps that: Fourier transformation is performed on acquired terahertz image data to obtain a frequency-domain image for characterizing the frequency-domain features of the terahertz image data; first band-stop filtering is performed on the frequency-domain image so as to remove periodic noises of a frequency range where stripe noises are located; high-pass filtering is performed on the frequency-domain image which has been subjected to the first band-stop filtering so as to attenuate or suppress low-frequency components and highlight remaining stripe noises; second band-stop filtering is performed on the frequency-domain image which has been subjected to the high-pass filtering so as to filter out stripe noises which have not been filtered out by the first band-stop filtering; and inverse Fourier transformation is performed on the frequency-domain image which has been subjected to the second band-stop filtering so as to convert the frequency-domain image into a time-domain image. Thus, with the method adopted, terahertz stripe noises can be effectively eliminated.

Description

technical field [0001] The invention relates to the field of terahertz detection array or infrared detection array imaging, in particular to a method and system for processing fringe noise of a terahertz image. Background technique [0002] Terahertz radiation refers to electromagnetic waves with a frequency between 0.1THz and 10THz. Its wave band is between microwave and infrared, and it belongs to the category of far-infrared electromagnetic radiation. The terahertz spectrum of matter contains rich physical and chemical information. At the same time, due to the characteristics of terahertz radiation itself, it can become a complementary technology of Fourier transform infrared optical latent technology and X-ray technology in many aspects. Terahertz radiation has broad applications in many basic research fields, industrial applications and military applications. Expansion capacity. It also has great application potential in the fields of biology, medicine, microelectroni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T5/002G06T2207/20024G06T2207/20048
Inventor 王军杜培甫梁恺朱瑶瑶苟君蒋亚东
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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