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Image stitching method for focal plane terahertz imaging

A technology of terahertz imaging and image stitching, which is applied in the details, image enhancement, image analysis and other directions related to image stitching. , the effect of improving image contrast

Active Publication Date: 2018-09-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that there is no splicing method that can be well applied to the field of terahertz images, resulting in that the terahertz images cannot be spliced ​​more accurately. The present invention provides a focal plane terahertz imaging image splicing method

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  • Image stitching method for focal plane terahertz imaging
  • Image stitching method for focal plane terahertz imaging
  • Image stitching method for focal plane terahertz imaging

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Embodiment Construction

[0063] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0064] After setting up the focus and using the smaller focal plane terahertz detector scanning imaging system to continuously scan the gasket, multiple images are obtained, and these images need to be spliced ​​two by two in sequence. The present invention is a focal plane terahertz imaging image stitching method, such as figure 1 shown, i...

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Abstract

The invention discloses an image stitching method for focal plane terahertz imaging and relates to the field of focal plane terahertz detection array imaging. The method disclosed by the invention comprises the following steps: combining Fourier transform and a Butterworth band elimination filter to process original images; performing high-frequency nonlinear enhancement on the filtered images, performing linear grey-scale map stretching and histogram equalization, combining the images subjected to the histogram stretching with histogram equalization according to a ratio by utilizing a weightallocation method; finally, performing affine transformation, characteristic point extraction, characteristic point matching and image stitching. According to the method disclosed by the invention, the problem that terahertz images cannot be accurately stitched because a stitching method capable of being well applied to the Terahertz image field does not exist at present can be solved.

Description

technical field [0001] The invention relates to the field of focal plane terahertz detection array imaging, in particular to an image stitching method for focal plane terahertz imaging. technical background [0002] Terahertz (Terahertz) waves generally refer to electromagnetic waves with a frequency of 0.1-10THz (wavelength 30μm-3mm), between microwave and far-infrared, and have low-energy brightness, high penetration, transient and water absorption. This characteristic makes it widely studied in security monitoring, medical medicine, aerospace, environmental monitoring and so on, and has great application prospects. However, due to the long wavelength of terahertz waves, the resolving power of far-field imaging systems is often limited by the diffraction of terahertz waves. Using terahertz focal plane imaging technology can effectively improve the resolution of terahertz imaging system. There are other factors that affect the final imaging quality, such as the emission p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40G06T3/00G06T5/00G06T5/10G06T5/20G06T5/40G06T5/50G06K9/46G06K9/62
CPCG06T3/4038G06T5/10G06T5/20G06T5/40G06T5/50G06T2200/32G06T2207/20024G06T2207/20032G06T2207/20064G06V10/462G06V10/757G06F18/24147G06T3/02G06T5/70
Inventor 王军刘鹏韩佳悦田夫兰苟君
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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