Volume measurement method based on three-dimensional visualization and Monte Carlo method
A volume measurement and volume technology, which is used in measurement devices, diagnostic recording/measurement, medical science, etc., can solve problems such as large workload, large errors, and complex processes, and achieve the effect of high accuracy of results.
Inactive Publication Date: 2012-10-24
INNER MONGOLIA UNIV OF SCI & TECH
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However, the disadvantage of this technology is that the process of this method is complicated, and it needs to be divided twice, which is similar to the area method mentioned in the article to find the volume, and the workload is very heavy.
However, the disadvantage of this technology is that this method converts the three-dimensional liver into two-dimensional segments, and calculates the number of pixels on the basis of two-dimensional to calculate the volume. It does not calculate the volume for the whole, but calculates the whole through parts volume, so the error is relatively large
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[0050] Based on the universality of the present invention, the present invention adopts such as figure 2 The skull shown serves as a volumetric object for demonstration purposes.
[0051] like Figure 4 As shown, this embodiment includes the following steps:
[0052] Step 1: Perform three-dimensional reconstruction of the sequence images of the measured object, specifically: firstly perform extraction of isosurface processing, splicing triangle patch processing and data mapping processing on the sequence images, and then use classic surface rendering in this embodiment Method - The method of moving the cube to achieve 3D reconstruction.
[0053] The extraction isosurface processing uses the Marching Cube surface rendering method, by treating a series of two-dimensional slice data as a three-dimensional data field, and extracting substances with a specific threshold from them in a topological manner Connected into triangular faces, the specific steps include:
[0054] i) R...
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Provided is a volume measurement method based on three-dimensional visualization and a Monte Carlo method. The volume measurement method includes that three-dimensional reconstruction is conducted on a sequence image of a measured object, reconstruction results are placed inside a virtual box obtained through construction, then a plurality of random points are generated inside the virtual box, finally the number of the random points inside the measured object after the three-dimensional reconstruction is calculated, and the volume of the measured object is calculated in proportion according to the volume of the virtual box and the total number of the random points. The volume measurement method achieves measurement of the volume of an irregular object, processing such as segmentation and block partitioning is not required to be conducted on the measured object, and result precision is relatively high.
Description
technical field [0001] The invention relates to a method in the technical field of computer information processing, in particular to a volume measurement method based on three-dimensional visualization and a Monte Carlo method for irregular and unclosed objects in a virtual environment. Background technique [0002] The measurement of volume is of great significance in many fields. In recent years, due to the limitation of two-dimensional information, scientific computing visualization technology has been developed rapidly, and the application of visualization technology has attracted more and more attention. The visualization toolkit VTK is developed by American kitware company, mainly aimed at two-dimensional and three-dimensional graphics image processing and visualization, it includes a variety of visualization methods, and supports cross-platform use. [0003] Currently, the volume measurement methods are mainly aimed at regular objects. Generally, there are ready-made ...
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IPC IPC(8): G01B21/00A61B5/107G06T17/00
Inventor 吕晓琪李许峰张宝华
Owner INNER MONGOLIA UNIV OF SCI & TECH