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Fiber image highlight detection and elimination method based on hyperspectral imaging

A technology of hyperspectral imaging and hyperspectral image, applied in the field of computer-aided image processing, can solve the problem that the highlight removal efficiency needs to be improved, and achieve the effect of improving the highlight removal effect, reducing the computational complexity and the computation time.

Pending Publication Date: 2021-12-03
ZHEJIANG SCI TECH UNIV SHAOXING KEQIAO RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the hyperspectral images actually collected by the hyperspectral imaging system, the prior information of the light source is not stable and consistent, and the efficiency of highlight removal needs to be improved

Method used

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  • Fiber image highlight detection and elimination method based on hyperspectral imaging
  • Fiber image highlight detection and elimination method based on hyperspectral imaging
  • Fiber image highlight detection and elimination method based on hyperspectral imaging

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Embodiment 1

[0097] Embodiment 1, fiber image highlight detection and elimination method based on hyperspectral imaging, such as Figure 1-3 As shown, including highlight detection and highlight removal for hyperspectral images. The images described in this embodiment refer to wool fiber hyperspectral images collected based on a microscopic hyperspectral imager. The highlight detection and elimination method in the embodiment is based on the following assumptions: there are sparsely distributed highlight regions in the hyperspectral image; the mixed spectral reflectance of the highlight region is composed of a diffuse reflection component, a specular reflection component and a Gaussian noise component; based on physical theory, the diffuse The reflection component and the specular reflection component have non-negativity. The specific process is as follows:

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Abstract

The invention discloses a fiber image highlight detection and elimination method based on hyperspectral imaging. The method comprises the steps of detecting a highlight region of a hyperspectral image based on a local space brightness difference method, and outputting a result as a constraint condition of highlight elimination; then, separating the mixed spectrum of the highlight region into a specular reflection component, a diffuse reflection component and a Gaussian noise component through repeated iteration separation based on an approximate sparse representation method of highlight constraint, and finally reserving the diffuse reflection component and using for replacing a mixed spectrum signal of the highlight region of the preprocessed hyperspectral image to obtain a hyperspectral image without highlights, eliminating the influence of highlight, and restoring spectral information, influenced by specular reflection, in the hyperspectral image. The method not only improves the highlight elimination effect, but also reduces the calculation complexity and the calculation time, and is more suitable for practical application.

Description

technical field [0001] The invention relates to the field of computer-aided image processing, in particular to a fiber image highlight detection and elimination method based on hyperspectral imaging. Background technique [0002] Each pixel in a hyperspectral image has a continuous wavelength spectrum with a huge amount of information, which is a major advantage of spectral analysis and greatly improves the efficiency of measurement and analysis. At present, microscopic hyperspectral imaging technology collects hyperspectral images of micron-scale objects in the form of spectral imaging, which is a non-contact and non-destructive color measurement method for micron-scale objects. However, when the hyperspectral imaging system collects hyperspectral images of textiles, due to the influence of sample characteristics, relative arrangement between the camera and the sample, sample geometry, illumination source and observation angle, a small part of the light is directly reflecte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/90
CPCG06T7/90G06T2207/10061G06T2207/10036G06T5/94
Inventor 裘柯槟陈维国
Owner ZHEJIANG SCI TECH UNIV SHAOXING KEQIAO RES INST CO LTD
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