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Programmable graphic hardware based rapid voxel method for polygonal grid model

A polygon and voxelization technology, which is applied in the field of computer systems, can solve the problem of low storage space utilization efficiency, and achieve the effect of saving storage space, small storage space and improving speed

Inactive Publication Date: 2005-08-17
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When implementing binary voxelization, 32 times the actual video memory space is used, and the utilization efficiency of storage space is not high
Experimental data show that on the latest graphics hardware platform, the voxelization method based on slices can only obtain interactive speed in the case of a grid model containing tens of thousands of polygons and a volume resolution of 128×128×128. It takes about 100 milliseconds to complete a voxelization

Method used

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  • Programmable graphic hardware based rapid voxel method for polygonal grid model
  • Programmable graphic hardware based rapid voxel method for polygonal grid model
  • Programmable graphic hardware based rapid voxel method for polygonal grid model

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Embodiment Construction

[0041] Referring to the accompanying drawings, the present invention will be described in detail below.

[0042] The present invention requires a personal computer equipped with programmable graphics hardware as a hardware platform, and the currently available application programming interfaces include DirectX 9.0 and OpenGL 1.5. Most of the graphics cards currently on sale in the market meet the requirements of the present invention, including graphics cards numbered 9500 and above from ATI, graphics cards numbered 5600 and above from NVidia, and the like. In the following description, DirectX 9.0 is used as the programming interface for illustration.

[0043] The technical solution of the present invention is: by setting an appropriate transformation matrix, the voxelized area is mapped into a viewing volume, and an orthogonal projection is made to one of the three coordinate axis directions of x, y, and z. Thus, each fragment generated in the rasterization stage correspond...

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PUM

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Abstract

This invention provides a quick constructive method for a polygon model based on programmable graphic hardware including: setting a suitable conversion matrix, imaging its constructive zone to a view volume and making an orthogonal projection to one of three coordinate shaft directions of x, y, z to enable every element generated on the grating stage to correspond to a tissue of the object body module, utilizing the programmable hardware to carry out encode transformation, drafting streaks and mixing colors in the pixel tinter to merge three directional streaks into a streak unit to be stored in a final frame buffer.

Description

technical field [0001] The invention relates to a computer system, in particular to a fast voxelization method of a polygon grid model based on programmable graphics hardware. Background technique [0002] Computer graphics is a discipline that establishes mathematical models of the world, uses computers to calculate light and shadow effects, and displays images on display devices. Core technology in diagnosis and treatment. The polygonal mesh model is the most common way to describe objects in computer graphics, and its essence is to describe the surface properties of objects, such as spatial position, local orientation, local color, etc. The polygon mesh model is composed of a series of planar polygons in the three-dimensional Cartesian coordinate system. Each polygon is connected by a series of vertices. Each vertex records attributes such as position, normal direction, material, and texture coordinates. Most of the vertices are Shared by multiple polygons. Graphics ba...

Claims

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Application Information

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IPC IPC(8): G06T1/00G06T15/00
Inventor 陈为张龙鲍虎军彭群生
Owner ZHEJIANG UNIV