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Image contrast enhancement of x-ray image

一种图像对比、对比增强的技术，应用在图像增强、图像分析、医学图像等方向，达到优化不透明化和描绘的效果

Active Publication Date: 2020-04-10
KONINKLIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been shown that contrast enhancement still does not always give sufficient results

Method used

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  • Image contrast enhancement of x-ray image
  • Image contrast enhancement of x-ray image
  • Image contrast enhancement of x-ray image

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] figure 1 A device 10 for image contrast enhancement of an X-ray image of a vascular structure is shown. Device 10 includes an input unit 12 and a processing unit 14 . The input unit 12 is configured to provide acquired x-ray images of vascular structures (eg figure 2 shown in ). The contrast injection is performed using the current contrast injection settings with at least one contrast injection parameter. The input unit 12 is also configured to provide a general vessel structure. The input unit 12 is also configured to provide said current contrast medium injection settings. The processing unit 14 is configured to determine the estimated contrast parameters for the general vessel structure based on the current contrast agent injection settings. The processing unit 14 is further configured to determine an adjusted image contrast enhancement for the general vessel structure based on the evaluated contrast parameters. The processing unit 14 is further configured to...

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Abstract

The present invention relates to image contrast enhancement. In order to provide improved and stable contrast enhancement for each acquired image, a device (10) for image contrast enhancement of an X-ray image of a vascular structure is provided. The device (10) comprises an input unit (12) and a processing unit (14). The input unit is configured to provide an acquired X-ray image of a vascular structure with a contrast injection. The contrast injection is performed with a current contrast injection setting having at least one contrast injection parameter. The input unit is further configuredto provide a generic vascular structure. The input unit is also configured to provide the current contrast injection setting. The processing unit is configured to determine an assessed contrast parameter for the generic vascular structure based on the current contrast injection setting. The processing unit is further configured to determine an adapted image contrast enhancement for the generic vascular structure based on the assessed contrast parameter. The processing unit is also configured to apply the adapted image contrast enhancement to the acquired X-ray image in order to generate a contrast-enhanced X-ray image.

Description

technical field [0001] The invention relates to a device for image contrast enhancement of X-ray images of vascular structures, a system with such a device, a method for image contrast enhancement of X-ray images of vascular structures, a computer for controlling such a device A program unit and a computer-readable medium storing the program unit. Background technique [0002] In X-ray images, contrast enhancement (CE) is provided to improve the image quality for the observer. Contrast enhancement can be achieved in the framework of frequency decomposition. For example, an image is decomposed into a certain number of frequency sub-bands, eg using a so-called Laplacian Pyramid. One would like the enhanced anatomical or interventional details to be spread across several of those frequency sub-bands. Gains, which may depend on local intensities, are then applied to the content of those subbands before the overall spectrum is recombined, thus resulting in enhancement. In ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00G06T5/00
CPCA61B6/481A61B6/504A61B6/5211A61B6/5258A61B6/5294G16H50/20G16H30/40A61B6/5205G06T2207/10116G06T2207/30101G06T5/90
Inventor B·P·A·J·霍恩阿尔特R·弗洛朗C·莱夫里耶B·M·H·热韦尔
Owner KONINKLIJKE PHILIPS NV
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