Method and system for reducing ringing effects in X-ray image

A ringing effect, X-ray technology, applied in the field of image processing, can solve problems such as ringing effect

Active Publication Date: 2017-10-20
GENERAL ELECTRIC CO
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However, while filtering with a band-stop filter to reduce raster artifacts, the band-stop filter c

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  • Method and system for reducing ringing effects in X-ray image
  • Method and system for reducing ringing effects in X-ray image
  • Method and system for reducing ringing effects in X-ray image

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[0027] In order to help those skilled in the art to understand exactly the subject matter claimed by the present invention, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following detailed description of the specific embodiments, some well-known functions or constructions are not described in detail in the present specification to avoid unnecessary detail that would obscure the disclosure of the present invention.

[0028] Unless otherwise defined, technical or scientific terms used in the claims and the specification shall have the ordinary meaning as understood by those of ordinary skill in the art to which this invention belongs. As used in this specification and the claims, "first," "second," and similar terms do not denote any order, quantity, or importance, but are merely used to distinguish the different components. "A" or "an" and the like do not denote a quantitative limitation, but ...

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Abstract

The present invention discloses a method for reducing ringing effects in an X-ray image. The method includes the steps of acquiring the X-ray image by scanning an object, wherein the X-ray image comprises grid line artifacts, applying a first bandwidth filter and a second bandwidth filter to the X-ray images respectively to obtain a filtered first image and a filtered second image, wherein the first bandwidth filter and the second bandwidth filter have different bandwidth, building a weight map according to the X-ray image, and fusing the filtered first image and the filtered second image by using the weight map to obtain an output image. The present invention also discloses a system using the method.

Description

technical field [0001] The present invention generally relates to image processing techniques, and more particularly to a method and system for reducing ringing effects in X-ray images. Background technique [0002] In the existing X-ray image system, the X-ray emitted from the X-ray source can penetrate the object and be imaged, and the primary beam of X-ray can be shot to the digital image detector, thus forming the digital radiography imaging projected image. However, scattered beams are generated when the primary beam passes through the object, and these scattered beams may reduce image contrast and degrade image quality. In order to remove these undesired scattered beams, an anti-scatter grid array is usually used between the X-ray source and the image detector. Existing anti-scatter grid arrays consist of alternating stripes made of an X-ray transparent material such as aluminum or carbon and an X-ray absorbing material such as lead. The anti-scatter grid array pref...

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Application Information

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IPC IPC(8): G06T5/00
CPCG06T5/003G06T2207/10116G06T2207/20024G06T5/005G06T5/10G06T5/002H04N5/325
Inventor 张朝霞陶鲲宣晓闫铭康涵
Owner GENERAL ELECTRIC CO
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