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Image denoising method, device, electronic device and storage medium

A technology in images and images, which is applied in the field of image processing, can solve problems such as prominent isolated points, decreased image contrast, and inability to measure similarity of pixels well, so as to achieve the effect of good particle noise and good contrast

Active Publication Date: 2022-06-07
NEUSOFT MEDICAL SYST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For this method, if the selected area is small, the similarity of pixels cannot be well measured, resulting in poor image noise shape distribution; if the selected area is large, it may cause image contrast to decrease and isolated points outstanding issues

Method used

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  • Image denoising method, device, electronic device and storage medium
  • Image denoising method, device, electronic device and storage medium
  • Image denoising method, device, electronic device and storage medium

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Embodiment Construction

[0045] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as recited in the appended claims.

[0046]The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and / or" as ...

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Abstract

The application provides an image denoising method, device, electronic equipment, and storage medium. The solution first uses two types of filtering methods to obtain two types of images. Since the contrast of the two types of images is different, it can obtain images with high contrast but relatively low noise. The poor first image, and the second image with lower contrast but better noise form, and then decompose the two types of images to obtain the high-frequency part and low-frequency part of the two types of images respectively. Combining the advantages and disadvantages of the above four parts, the weight value of each part can be set, and then the four parts can be synthesized and reconstructed, so that a denoised image with good contrast and good grain noise can be obtained.

Description

technical field [0001] The present application relates to the technical field of image processing, and in particular, to an image denoising method, apparatus, electronic device, and storage medium. Background technique [0002] CT is a technology that uses an X-ray beam to scan a certain part of a scanned object, and obtains a CT image composed of pixels by performing a series of processing on the scanning results. Generally, the directional stripe noise and particle noise of CT images are the main factors that affect the image quality, while traditional image processing methods such as filtering methods take more consideration of the self-similarity of the image itself when processing CT images. The weighting process is used to achieve the effect of removing noise (abbreviation: denoising), so the noise reduction effect on the CT image is small. [0003] Specifically, traditional methods (such as median filtering, Gaussian filtering, non-local mean filtering, etc.) mostly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
CPCG06T2207/10081G06T2207/20024G06T5/70
Inventor 楼珊珊闫孟雨逄岭
Owner NEUSOFT MEDICAL SYST CO LTD