Volume data deformation and visualization method based on inverse speed displacement field

A technology of displacement field and volume data, which is applied in the field of data visualization, can solve problems such as the inability to realize multi-step deformation operations of volume data, and achieve the effects of improving comprehensibility, accurate and comprehensive understanding, and ensuring rendering quality

Active Publication Date: 2014-07-09
山东未来集团有限公司
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Problems solved by technology

[0004] Aiming at the defect that the method based on inverse displacement field such as Correa cannot realize the multi-step deformation operation of volume data, the present invention proposes a multi-step deformation operation and visualization method of volume data based on inverse velocity displacement field

Method used

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  • Volume data deformation and visualization method based on inverse speed displacement field
  • Volume data deformation and visualization method based on inverse speed displacement field
  • Volume data deformation and visualization method based on inverse speed displacement field

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Embodiment Construction

[0020] The technical solution of the present invention will be further described in detail below in conjunction with a specific example.

[0021] The image data sampled in this example is a 256×256×64 orange volume data.

[0022] Such as figure 1 Shown is a two-step schematic diagram of the multi-step deformation operation. Extract the volume data in the image information, establish the volume data deformation operation model to perform deformation operation on the volume data, the inverse velocity displacement field V′ describes the deformation operation that has occurred, and describe the multi-step deformation operation as the deformation operation V″ that is about to be carried out (deformation operation V″ represented by the deformation template) and the two-step operation superimposed on the deformation operation V′ that has already occurred.

[0023] For example, the n-step deformation operation is considered as the superposition of the n-1 step deformation operation ...

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Abstract

The invention discloses a volume data visualization processing method based on an inverse speed displacement field, and relates to the graphics and image technology. A technical scheme adopted by the invention is as follows: generalizing a multi-step deformation operation of volume data into a two-step deformation operation; taking a two-step deformation operation as superposition of a deformation operation to be performed and a happened deformation operation; building a two-step deformation operation model of an initialization scene and the volume data; computing the inverse speed displacement field to express an operation co-expressed by the original inverse speed displacement field, feature field data, feature volume data and a deformation template; maintaining the first-order continuity of the inverse speed displacement field by post-processing; and taking the inverse speed displacement field as a scene, and using the ray-casting algorithm to draw deformed volume data. The method provided by the invention solves the multi-step operation problem of the volume data, ensures the drawing quality and the drawing real-time performance, and improves the intelligibility of a geometrical relationship among inner structures of the volume data.

Description

technical field [0001] The invention relates to a method in the technical field of data visualization, in particular to a multi-step deformation operation and visualization method of volume data based on an inverse velocity displacement field. Background technique [0002] Since the U.S. government established the "Visualization in Scientificcomputing" natural science fund in the late 1980s, volume data visualization technology has been a research hotspot, and it is playing an important role in medical diagnosis, surgical planning, geological exploration and weather forecasting. increasingly important role. The purpose of volume data visualization is to achieve fast, accurate and comprehensive understanding of volume data. It uses computer graphics and image processing technology to represent abstract data into concrete images, enabling researchers to understand phenomena, processes, and physical quantities through visual perception, and enabling users to see things that th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T15/08
Inventor 秦红星
Owner 山东未来集团有限公司
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