Electromagnet data interactive visual analysis method based on VTK

An analysis method and volume data technology, applied in image data processing, 3D image processing, instruments, etc., can solve the problems of single display effect and poor interactivity of electromagnetic data plane rendering system, and achieve the goal of improving rendering effect and enhancing shadow effect. Effect

Inactive Publication Date: 2019-09-06
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0006] In order to avoid the deficiencies of the prior art, the present invention proposes a VTK-based interactive visual analysis method for electromagnet data, uses VTK to build a

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  • Electromagnet data interactive visual analysis method based on VTK
  • Electromagnet data interactive visual analysis method based on VTK
  • Electromagnet data interactive visual analysis method based on VTK

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Embodiment Construction

[0036] The present invention will now be further described in conjunction with the embodiments and accompanying drawings:

[0037] The detailed schematic is as figure 1 shown, the specific steps are as follows:

[0038] (1) Read the original volume data through the vtkImageReader class in VTK, set the dimension of the volume data to 63X63X63, the pixel interval to 1X1X1, and the reference point to (0,0,0), and then use the vtkSmoothPolyDataFilter class to perform the imported data. For Laplace smoothing, use the SetNumberOfIterations function to set the smoothing coefficient to 2000, and then use the vtkImageCast class to convert the data type to convert the original data to UnsignedChar.

[0039] (2) Traverse the volume data, count the frequency of occurrence of different grayscale values, generate a volume data grayscale array, convert the array to vtkIntArray type, convert the array to vtkDataObject type, and then use the array as the input of the vtkBarChartActor class to...

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Abstract

The invention relates to a electromagnet data interactive visual analysis method based on VTK. . An electromagnet data interactive visual analysis system is built by using a VTK visual toolkit. Firstly, volume data gray level distribution characteristics are obtained by means of an electromagnet data gray level statistical histogram. The threshold value, opacity and color of the contour surface isset according to the data. The interactive design of multiple equivalence surfaces is realized. A user can explore field intensity distribution of an interested plane through a multi-angle slicing function. An interactive marking function is provided for the user to enable the user to add an analysis result as a three-dimensional mark into a rendering scene. A shadow effect is improved by utilizing an illumination design module to realize multi-view, high-quality and interactive visual analysis of the electromagnet data.

Description

technical field [0001] The invention belongs to the field of surface rendering of volume data, and relates to an interactive visual analysis method of electromagnet data based on VTK. Background technique [0002] Surface rendering is an important method of volume data visualization. The basic idea is to find all data points in the volume data field that are equal to a given data value, and then use geometric primitives to connect these points into surfaces. This method has rendering It has the advantages of faster speed and less system resources. The biggest feature of surface rendering is the use of surface fitting technology to generate isosurfaces in the 3D data field, and then combine the illumination model and texture model to draw 3D images. [0003] VTK is a software development kit for 3D computer graphics, image processing and visualization. It is designed and implemented on the basis of object-oriented principle, and its kernel is constructed with C++ language, ...

Claims

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Application Information

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IPC IPC(8): G06T15/00G06T15/50
CPCG06T15/005G06T15/506
Inventor 高颖李启凡汪静邵群陈局非郭淑霞李锐
Owner NORTHWESTERN POLYTECHNICAL UNIV
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