| An improved fast algorithm for calculating the gradient of data field | |
| Zhong, Jia; Zou, Ziming | |
| Department | 运控部/科学卫星综合运控中心 |
| Source Publication | ACM International Conference Proceeding Series |
| 2017 | |
| Language | 英语 |
| ISBN | 9781450352369 |
| Abstract | It is an important part of extracting the border in volume visualization for computing gradient feature of spatial data accurately and rapidly. The traditional method of volume visualization is to resample the data of model or observation distributing on non-uniform grids of three-dimensional Euclidean space by trilinear interpolation to uniform grids, then calculate gradient features of all grid vertex data. This paper designs an improved algorithm, based on properties of equal partial derivatives along axis after data linear interpolation, it removes a large number of repetitive calculations and redundant storage of partial derivatives, in traditional method. Finally, this paper verifies the algorithm validity with visualization experiments using the MHD simulation data to extract the magnetopause. © 2017 Copyright held by the owner/author(s). |
| Keyword | Direct Volume Rendering Non-uniform Grid Data Trilinear Interpolation Gradient Of Data Mhd |
| Conference Name | 2017 International Conference on Computer Graphics and Digital Image Processing, CGDIP 2017 |
| Conference Date | July 2, 2017 - July 4, 2017 |
| Conference Place | Prague, Czech republic |
| Indexed By | EI ; CPCI |
| Document Type | 会议论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/6047 |
| Collection | 运控部/科学卫星综合运控中心 |
| Recommended Citation GB/T 7714 | Zhong, Jia,Zou, Ziming. An improved fast algorithm for calculating the gradient of data field[C],2017. |
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