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High dynamic range regenerating method of X-ray image based on scale space decomposition

A scale space, X-ray technology, applied in the field of image processing, can solve the problems of X-ray image extension and so on

Inactive Publication Date: 2008-07-23
XI AN JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

[0003] At present, there is no method to expand the dynamic range of X-ray images at home and abroad.

Method used

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  • High dynamic range regenerating method of X-ray image based on scale space decomposition

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Embodiment Construction

[0050] The X-ray image ultra-dynamic range reconstruction method disclosed in the present invention, the steps of the method include: taking two images of the same imaging object obtained under different imaging conditions, the two images have a small imaging dynamic range and respectively include images of different regions of the imaging object information. First, decompose the two images based on the scale space, and then reconstruct the corresponding decomposed components of the two images through certain reconstruction rules, and then select the appropriate equalization coefficient for the reconstructed components to reconstruct a picture with a wide dynamic range. image. Its algorithm flowchart is shown in Figure 1. The Gaussian filter operator can be selected for the decomposition process, and its algorithm flow is shown in Figure 2. Selecting appropriate equalization coefficients for the reconstructed decomposed components can compress large-scale signals and enhance...

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Abstract

The invention discloses an X-ray image super-dynamic range reconstruction method which is based on decomposition and reconstruction of the scale space, the steps of the method include: two conventional X-ray images of a same imaging object are shot under different imaging conditions, and the two images can respectively display the information of the different regions of interest of the imaging object. The invention is firstly carried out the decomposition of the two images based on the scale space, the reconstruction of the components of decomposition of the two images is done by certain reconstruction rules and an image with the dynamic range expansion is reconstructed on the basis. The method can effectively expand the imaging dynamic range of the small dynamic range X-ray imaging equipment, which has great actual application value.

Description

technical field [0001] The invention belongs to the field of image processing, and relates to the processing of X-ray images, in particular to the improvement of the dynamic range of X-ray images, and in particular to an X-ray image processing method based on scale space decomposition and reconstruction. Background technique [0002] X-ray imaging technology has a wide range of applications in medical diagnosis and industry. Digital X-ray imaging technology is an advanced X-ray imaging technology formed by combining computer digital image processing technology and X-ray radiation technology. For the chest X-ray imaging commonly used in medical diagnosis, due to the large difference in the density and thickness of the chest tissue structure, traditional X-ray plain films are often difficult to display the lesions of different tissue structures at the same time, while digital X-ray photography The biggest advantage is that it only needs one exposure, and through tuning and sp...

Claims

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Application Information

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IPC IPC(8): A61B6/02G06T5/50
Inventor 牟轩沁杨莹张敏
Owner XI AN JIAOTONG UNIV
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