Method for dividing industrial CT image comprising multiple columnar targets

A CT image and target technology, applied in image analysis, image enhancement, image data processing, etc., can solve problems such as error-prone, low-efficiency manual operation, large workload, etc., to avoid differences, facilitate post-analysis and 3D reconstruction , the effect of running fast

Active Publication Date: 2016-06-08
重庆真测科技股份有限公司 +1
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  • Abstract
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  • Application Information

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Problems solved by technology

This method of segmentation of industrial CT images requires manual operation. When there are many slices or targets to be scanned, the workload is heavy, the efficiency of manual operation is low, and it is prone to errors.

Method used

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  • Method for dividing industrial CT image comprising multiple columnar targets
  • Method for dividing industrial CT image comprising multiple columnar targets
  • Method for dividing industrial CT image comprising multiple columnar targets

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Embodiment Construction

[0031] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] A kind of segmentation method that is used for the industrial CT image that comprises a plurality of columnar objects of the present invention comprises the following steps:

[0033] Step 1: Select a tomographic image for template making, record the selected image as I 0 :g=f 0 (x, y), where (x, y) is the image pixel coordinates, g is the gray value corresponding to the image pixel coordinates (x, y), g∈[0,255];

[0034] Step 2: Put the image I 0 Do binarization processing, set the segmentation threshold T, set the image background pixel value to 0, and set the target pixel value to 255, and obtain the binarized image I after segmentation 1 , I 1 The expression is:

[0035] f 1 ( x , y ) = ...

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Abstract

The invention discloses a method for dividing an industrial CT image comprising multiple columnar targets. The method comprises the following steps: making a template; marking targets in the template image; automatically performing target division of all CT images according to the template; and storing the divided targets in different catalogues. According to the method, all steps are automatically finished by a computer, errors caused by human factors are avoided, the target images are automatically stored in files to facilitate later management, the operation speed is high, and the working efficiency is remarkably improved; moreover, manual operation is reduced, and the labor cost is reduced; meanwhile, the division is accurate, and the cross-section images of the same target are divided into the equal size while the target positions are the same so as to facilitate later analysis and three-dimensional reconstruction and avoid difference caused by manual division; and moreover, an effect that the backgrounds of the divided sub-images are all black unavailable by manual division is realized, which is equivalent to the removal of background noise in three-dimensional reconstruction so as to highlight the target.

Description

technical field [0001] The invention relates to an industrial radiation imaging processing method, in particular to a method for segmenting three-dimensional images in industrial CT images containing a plurality of columnar targets. Background technique [0002] Industrial CT is the abbreviation of industrial computer tomography technology. It can clearly, accurately and intuitively display the internal structure of the detected object in the form of computer two-dimensional tomographic images or three-dimensional images without damaging the detected object Composition, material and defect status, known as the best non-destructive testing and non-destructive evaluation technology today. [0003] In the field of industrial CT, when performing three-dimensional reconstruction of the measured object, the three-dimensional image is superimposed by several layers of two-dimensional tomographic images. There are dozens or even hundreds of slices in CT scans, the amount of data is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T2207/10081
Inventor 王璟瑞邹永宁高锐
Owner 重庆真测科技股份有限公司
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