Three-dimensional data clipping method and system

Abstract

The invention is applicable to the technical field of computer visualization processing, and provides a three-dimensional data clipping method which comprises the following steps of: drawing the three-dimensional data in projection transformation; selecting a visualization area to be processed; constructing the curved line and curved surface of the clipping area; and modifying the three-dimensional data according to the constructed cured surface, and re-drawing the modified three-dimensional data. Preferably, the three-dimensional data can be subjected to volume rendering or surface rendering in parallel projection, and modification on the three-dimensional data is realized by virtue of Boolean calculation. The invention also provides a three-dimensional data clipping system for realizing the method. Therefore, according to the invention, the three-dimensional data is drawn so as to ensure that users can observe conveniently, thereby realizing the purpose of carrying out interactive modification on the three-dimensional data in visualized situation.

Description

technical field [0001] The invention relates to the technical field of computer visualization processing, in particular to a three-dimensional data cutting method and system. Background technique [0002] It has become one of the most important functions of a modern computer system to present various files, information, and data on a graphic screen to facilitate users to browse, observe, and organize. Among them, the virtual reality graphics rendering technology allows users to view 3D virtual objects conveniently, and has important applications in various fields such as medical imaging computer-aided design. The virtual reality graphics rendering technology includes volume rendering technology and Surface rendering technology. [0003] Image segmentation in medicine is a method of extracting regions of interest from three-dimensional data with the help of computer algorithms. In the existing medical image processing technology, whether it is the method of first segmentati...

AI Technical Summary

Problems solved by technology

In the existing medical image processing technology, whether it is the method of first segmentation and then reconstruction, or the method of first reconstruction and then segmentation, or the anti-segmentation method of segmentation and reconstruction, it may cause excessive segmentation of an organ. Conventional algorithms cannot segment a certain part of an organ or tiny blood vessels, so it is necessary to repeatedly adjust the segmentation process or spend a lot of time modifying the segmentation results, the user has no intuitive experience and the operation is difficult

Chinese Patent Publication No. 102074039A, titled "A Method for Drawing Clipping Surfaces for Volume Rendering", discloses the technology of using bounding boxes of volume data for visual clipping. Other volume data will not be displayed, but the modification of the source volume data has not been realized, so the cutting result cannot be saved, and continuous cutting is not possible, and due to the limitation of visualization hardware technology, arbitrary shape cutting cannot be realized

[0004] In summary, the existing 3D data clipping technology obviously has inconvenience and defects in actual use, so it is necessary to improve it

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