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X ray picture edge and contrast synthesis enhancing method

An image edge and edge enhancement technology, which is applied in the field of image processing, can solve problems such as difficulty for users to choose algorithms and lack of versatility, and achieve good enhancement effects, clear layers, and fast execution speed

Active Publication Date: 2008-07-30
TSINGHUA UNIV +1
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Problems solved by technology

But it is difficult for the user to choose the appropriate algorithm and combine them in the correct order
[0004] In addition, some enhancement methods rely on specific hardware, such as invention patents CN1438610-apparatus and method for enhancing contrast using histogram matching and CN1620107-apparatus and method for image sharpness enhancement, which lack versatility

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  • X ray picture edge and contrast synthesis enhancing method
  • X ray picture edge and contrast synthesis enhancing method
  • X ray picture edge and contrast synthesis enhancing method

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Embodiment Construction

[0024] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] Whole process of the present invention is as figure 1 As shown, the comprehensive enhancement method for X-ray images mainly includes the following three steps. After inputting the X-ray images collected by the X-ray image acquisition system into the computer processing system, the Laplacian edge enhancement algorithm with adjustable intensity is firstly used to process the images. Edge enhancement processing; then use fast local histogram equalization (LHE: Local Histogram Equalization) to process and enhance every detail in the image; the last step is gray scale stretching, because some areas of X-ray images are generally dark, through automatic A logarithmic transformation of the adaptation parameter to stretch the grayscale range of darker regions in the image. After the above three steps of enhancement processing, an enhan...

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Abstract

The invention relates to the field of image processing technology, in particular to an image enhancement processing method for an industrial or medical X-ray image inspection system. The method comprises the following steps of : S1. inputting a collected X-ray image; S2. enhancing image edges by adopting Laplacian edge enhancement algorithm which can adjust intensity; S3. processing each detail in the enhanced image by adopting quick local histogram equalization (LHE) ; S4. stretching the gray range of the image data which has been processed through the step S3; S5. outputting the enhanced image. Compared with the perspective image enhancement algorithm on prior inspection equipment, the invention has the advantages of better enhancement result, adaptive ability, high automation degree, simple operation and quick execution.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to image enhancement processing of an industrial or medical X-ray image inspection system. Background technique [0002] In the X-ray image inspection system, the output image is often blurred and the overall brightness of the image is too low, which causes great difficulties for inspectors to observe the image content and find suspicious areas in the image. [0003] In order to make the image display clearer, various image processing functions need to be added in the X-ray image inspection system. Various edge enhancement algorithms and contrast enhancement algorithms are commonly used, and different algorithms have different effects, and the combination order of multiple algorithms is also closely related to the enhancement results. In previous enhancement algorithms, only a separate edge enhancement method was often provided, such as invention patent CN1405734-a method ...

Claims

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Application Information

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IPC IPC(8): G06T5/40A61B6/00
Inventor 张丽王志明陈志强邢宇翔
Owner TSINGHUA UNIV
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