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Image enhancement method and system based on image decomposition and spectrum transformation

An image enhancement and image technology, applied in the field of image processing, can solve the problems of loss of details, enlargement, local modules are too bright or too dark, etc., and achieve the effect of small calculation, obvious decomposition effect, and enhanced features and information

Pending Publication Date: 2022-04-12
ANHUI UNIVERSITY
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Problems solved by technology

[0007] Aiming at the existing problems in the existing technology of endoscopic images, such as noise amplification with contrast, loss of details, and local modules being too bright or too dark, an innovative image enhancement method based on image decomposition and spectral transformation is proposed, which is especially suitable for Image Enhancement of Endoscopic Vascular Images

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  • Image enhancement method and system based on image decomposition and spectrum transformation
  • Image enhancement method and system based on image decomposition and spectrum transformation
  • Image enhancement method and system based on image decomposition and spectrum transformation

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[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0054] The embodiment of the present invention discloses an image enhancement method based on image decomposition and spectral transformation, the method steps can be found in figure 1 , the structure change process of the image see figure 2 . The specific method is:

[0055] Step 1. Separate the path of the input original image, divide the original image into a noise layer image and a base layer image, specifically:

[0056] Step 1.1. Perform global noise...

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Abstract

The invention discloses an image enhancement method and system based on image decomposition and spectrum transformation, and relates to the technical field of image processing, and the method comprises the steps: carrying out the path separation of an original image, and dividing the original image into a noise layer image and a basic layer image; performing detail extraction on the base layer image, and dividing the base layer image into a structure layer image and a detail layer image; carrying out truncated adaptive brightness stretching on the structure layer image; performing highlight removal processing and detail color processing on the detail layer image; performing detail enhancement on the detail layer image after the detail color processing; performing weighted fusion on the detail layer image after detail enhancement and the truncated structure layer image after adaptive brightness stretching to obtain a processed base layer image; and performing equal-proportion fusion on the processed base layer image and the noise layer image, and outputting a result image. The method is particularly suitable for endoscopic images in medicine, details in the endoscopic images can be amplified in a self-adaptive mode, noise influences are eliminated, and the problem that local modules are too bright or too dark is solved.

Description

technical field [0001] The present invention relates to the technical field of image processing, and more specifically relates to an image enhancement method and system based on image decomposition and spectral transformation. Background technique [0002] At present, the algorithms for endoscopic image enhancement mainly include: methods based on machine learning, methods based on retinex theory, and methods based on homomorphic filtering. [0003] Based on the multi-spectral imaging method, there are currently three main endoscopic image enhancement technologies: NBI, FICE and I-Scan, all of which achieve real-time processing by enhancing the characteristics of blood vessels. NBI is a hardware image enhancement technology that uses narrow-band light illumination. It narrows the three bands of blue, green, and red through optical filters of specific wavelengths. Among them, blue is (415±15)nm, and green is (540)nm. ±10)nm, red is (600±10)nm. The three bands penetrate the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/50G06N3/04G06N3/08
Inventor 徐超檀伟李正平
Owner ANHUI UNIVERSITY
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