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Interactive volume cutting method based on three-dimensional plane control

A cutting method and interactive volume technology, applied in the field of 3D visualization, can solve problems such as interactive volume cutting, achieve high-quality rendering, fast rendering, and improve efficiency

Active Publication Date: 2009-12-02
INST OF AUTOMATION CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Implementing interactive volume cutting in software-based volume rendering scenes remains a technical challenge due to the lack of depth information
It is even more challenging to research interactive and immersive volume cutting methods that are suitable for both soft rendering (software-based volume rendering) and hard rendering (graphics hardware-based volume rendering).

Method used

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  • Interactive volume cutting method based on three-dimensional plane control
  • Interactive volume cutting method based on three-dimensional plane control
  • Interactive volume cutting method based on three-dimensional plane control

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Embodiment Construction

[0030] Various details involved in the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be pointed out that the described embodiments are only intended to facilitate the understanding of the present invention, rather than limiting it in any way.

[0031] The invention realizes interactive volume cutting based on the three-dimensional plane control and the two-dimensional projection image obtained by volume rendering. Each 3D plane control encapsulates a clipping plane, and the state of the 3D plane control can be changed through mouse interactive manipulation. Firstly, the clipping plane information encapsulated by the 3D plane control is extracted, and the 2D projection image of the volume data is obtained by using volume rendering based on software or volume rendering based on graphics hardware. Then use the method of texture mapping to remap the 2D projected image into 3D space, and draw ...

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Abstract

The invention provides an interactive volume cutting method based on three-dimensional plane controls, aiming to solve the technical problem that how to carry out interactive volume cutting in a volume rendering scene based on software and image hardware. The invention comprises the following steps: (1) integrative drawing environment of volume data and three-dimensional plane controls is built; (2) the volume data and the three-dimensional plane controls are drawn in a mixed mode; (3) the interactive cutting of the volume data is finished by the control of a mouse. The invention integrates volume data, three-dimensional plane controls, volume drawing, mixing drawing and mouse control into the same environment so as to realize interactive and immersing volume cutting. Meanwhile, the volume drawing can be based on software to realize high-quality drawing of large-scale volume data; in addition, the invention also can adopt volume drawing based on image hardware, and can realize quick drawing of small and medium-sized volume data, so that the invention has important application value in the field of volume data search and visualization.

Description

technical field [0001] The invention relates to the field of three-dimensional visualization in computer graphics, in particular to realizing interactive volume cutting by using a three-dimensional plane control and a volume rendering method. Background technique [0002] Volume rendering (Volume Rendering) appeared in the 1980s and is a very important method in 3D visualization methods. Because volume rendering can not only display the surface information of three-dimensional regular data (also called volume data), but also display its internal information, so as to realize the realistic display of volume data and facilitate the comprehensive understanding and analysis of volume data information, so in It plays a very important role in assisting doctors in diagnosis and industrial CT defect detection. [0003] In the process of volume rendering, the internal organization information of volume data can be displayed by interactively adjusting the transfer functions such as g...

Claims

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Application Information

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IPC IPC(8): G06T15/00G06T15/30
Inventor 田捷戴亚康代晓倩杨鑫
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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