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Method of eliminating digital type X ray machine image grid lines

A digital image and X-ray machine technology, applied in image enhancement, image data processing, instruments, etc., can solve problems such as reducing shooting efficiency and accelerating machine depreciation

Inactive Publication Date: 2015-11-25
陈跃泉 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method inevitably accelerates machine depreciation and reduces shooting efficiency, so it is not used in actual operation

Method used

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  • Method of eliminating digital type X ray machine image grid lines
  • Method of eliminating digital type X ray machine image grid lines
  • Method of eliminating digital type X ray machine image grid lines

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Embodiment Construction

[0020] The specific implementation of the present invention is divided into the following three parts:

[0021] The first part: algorithm implementation, because it does not require a graphical interface and requires high execution efficiency, it is developed in C language to maximize the use of language advantages and improve speed. In the compilation and optimization options of the program, select speed first, and simplify the floating-point arithmetic model, in order to further improve the speed.

[0022] Part 2: The algorithm is implemented in the form of a dynamic link library, which can be called through an open interface. The interface design is as follows:

[0023] extern "C"_declspec(dllexport) int_stdcallGridLineRemoval(short*in, short*out, intimgWidth, intimgHeight, doublescaleM, doublescaleN, intclassR, doublesd, doubleD0);

[0024] Parameter Description:

[0025] in: the memory address of the image to be processed; out: the memory address of the processed image

[0026] img...

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Abstract

A method of eliminating digital type X ray machine image grid lines is applied to control software of a digital type X ray machine. The method used in a way to cooperate with low-density grids is used for performing grid removal on images acquired by the machine and having grid lines. The method comprises the following steps of analyzing the image frequency distribution by using the Fourier transformation after an analysis of the spatial domain and the frequency domain of images with grid lines, finding out the grid line corresponding relations in the frequency distribution and the spatial domain, designing a new frequency domain filtering function, selecting proper algorithm parameters, removing or weakening frequencies related to the grid lines to the maximum and further removing vertical grid lines in the spatial domain.

Description

Technical field [0001] The invention relates to a method for processing an original image collected by a digital X-ray machine, in particular to an image algorithm for eliminating grating patterns in the original image, and the algorithm is used in the control software of the machine. Background technique [0002] The current X-ray machine is undergoing a transition from analog to digital, and the expression of image information has transitioned from film form to digital image form. In the old X-ray machine, the original emission line emitted from the X-ray tube will produce scattered rays after entering the human tissue. The scattered rays radiate in random directions. When they act on the film behind the human body, fog will be formed on the film, reducing the clarity and contrast of the film. In order to improve this situation, it is necessary to insert a grid between the human body and the film to absorb scattered rays. [0003] The X-ray machine has entered the digital age. ...

Claims

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Application Information

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IPC IPC(8): G06T5/00
Inventor 陈跃泉杨大刚
Owner 陈跃泉