Blood vessel diameter measuring method based on digital image processing technology

A digital image and tube diameter measurement technology, which is applied in the field of medical image vessel diameter measurement, can solve the problems of rough effect and large subjective error, and achieve the effect of low image quality, high calculation efficiency and accurate calculation

Inactive Publication Date: 2012-10-31
HARBIN ENG UNIV
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Problems solved by technology

These existing methods have large artificial subjective errors, and cannot fundamentally solve the exact relationship between pipe diameter and boundary and eliminate subjective random errors in quantization operations.
In recent years, with the introduction of image processing and computer technology, some methods combined with screen display technology have appeared so far, such as "caliper" measurement methods that use cursors to calibrate and observe a certain measurement area. Mixed with artificial subjective factors, the effect is relatively rough

Method used

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  • Blood vessel diameter measuring method based on digital image processing technology
  • Blood vessel diameter measuring method based on digital image processing technology
  • Blood vessel diameter measuring method based on digital image processing technology

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Embodiment Construction

[0011] The following examples describe the present invention in more detail:

[0012] Input the blood vessel image, and use the upper, lower, left, and right four parameters to specify the measurement area. These four values ​​indicate the distance between the measurement area and the original image's upper, lower, left, and right boundaries (in pixels) ). When the up / down parameter value is less than 0 or greater than the image height, the program defaults its value to 0 or the image height; when the left / right parameter value is less than 0 or greater than the image width, the program defaults its value to 0 or the image width.

[0013] The specific implementation steps of the blood vessel diameter algorithm proposed by the present invention are as follows:

[0014] Step 1, image enhancement.

[0015] The gray distribution of the blood vessel cross section is similar to a Gaussian curve, so the Gaussian matching filter method is used to match the original image to extract ...

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Abstract

The invention provides a blood vessel diameter measuring method based on digital image processing technology. The method includes that: (1) Gauss matched filtering method is utilized to enhance a blood vessel image; (2) the image is normalized and binarized; (3) according to related theory of mathematical morphology, the image is refined, and skeleton is extracted; (4) straight line fitting method is used for solving slope of a section of blood vessel, pixel number of blood vessel is detected along the direction vertical to the blood vessel, and then the blood vessel diameter is solved according to dot pitch. The invention is used for measuring medical image blood vessel diameter, computing efficiency is high, requirement on image quality is low, and computation is accurate.

Description

technical field [0001] The invention relates to a method for measuring blood vessel diameter in medical images, in particular to an automatic measurement method for blood vessel diameter based on digital image processing technology. Background technique [0002] For decades, in medicine, methods such as projection method, radiography method, ophthalmoscope image measurement method and microscope image measurement method have been mainly used to measure the diameter of blood vessels. Most of these diagnosis methods use a combination of mechanical and optical mechanisms. These existing methods have relatively large artificial subjective errors, and cannot fundamentally solve the exact relationship between pipe diameters and boundaries and eliminate subjective random errors in quantization operations. In recent years, with the introduction of image processing and computer technology, some methods combined with screen display technology have appeared so far, such as "caliper" me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/107
Inventor 郑丽颖田凯毛晓辉
Owner HARBIN ENG UNIV
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