中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共7条,第1-7条 帮助

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A multi-layer modelling approach for mining versatile ports of a global maritime transportation network 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF DIGITAL EARTH, 2023, 卷号: 16, 期号: 1, 页码: 2129-2151
作者:  
Peng, Peng;  Claramunt, Christophe;  Cheng, Shifen;  Yang, Yu;  Lu, Feng
  |  收藏  |  浏览/下载:19/0  |  提交时间:2023/07/14
A global gridded municipal water withdrawal estimation method using aggregated data and artificial neural network 期刊论文  OAI收割
WATER SCIENCE AND TECHNOLOGY, 2022, 页码: 24
作者:  
Yan, Jiabao;  Jia, Shaofeng
  |  收藏  |  浏览/下载:34/0  |  提交时间:2023/01/09
A global gridded municipal water withdrawal estimation method using aggregated data and artificial neural network 期刊论文  OAI收割
WATER SCIENCE AND TECHNOLOGY, 2022, 页码: 24
作者:  
Yan, Jiabao;  Jia, Shaofeng
  |  收藏  |  浏览/下载:36/0  |  提交时间:2023/01/09
CLAP: Component-Level Approximate Processing for Low Tail Latency and High Result Accuracy in Cloud Online Services 期刊论文  OAI收割
IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS, 2017, 卷号: 28, 期号: 8, 页码: 2190-2203
作者:  
Han, Rui;  Huang, Siguang;  Wang, Zhentao;  Zhan, Jianfeng
  |  收藏  |  浏览/下载:15/0  |  提交时间:2019/12/12
A local feature based simplification method for animated mesh sequence (EI CONFERENCE) 会议论文  OAI收割
2010 2nd International Conference on Computer Engineering and Technology, ICCET 2010, April 16, 2010 - April 18, 2010, Chengdu, China
作者:  
Wang B.;  Wang B.;  Zhao J.;  Zhang S.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
Although animated meshes are frequently used in numerous domains  only few works have been proposed until now for simplifying such data. In this paper  we propose a new method for generating progressive animated models based on local feature analysis and deformation area preservation. We propose the use of solid angle and height value for a non-hyperbolic vertex to define the local feature parameter. This local factor is embedded to the vertex quadric error matrix when calculating the edge collapse cost. In order to preserve the areas with large deformation  we add deformation degree weight to the aggregated quadric errors when computing the unified edge contraction sequence. Finally  a mesh optimization process is proposed to further reduce the geometric distortion for each frame. Our approach is fast  easy to implement  and as a result good quality dynamic approximations with well-preserved fine details can be generated at any given frame. 2010 IEEE.  
Multiresolution animated models generation based on deformation distance analysis (EI CONFERENCE) 会议论文  OAI收割
2009 International Conference on Computer Modeling and Simulation, ICCMS 2009, February 20, 2009 - February 22, 2009, Macau, China
Shixue Z.; Enhua W.
收藏  |  浏览/下载:60/0  |  提交时间:2013/03/25
In computer graphics  animated models have been widely used to represent time-varying data. Reducing the models complexly is a common way to overcome the rendering limitations. In this paper  2009 IEEE.  we propose an efficient method for generating multiresolution animated models based on deformation distance analysis. Our method obtains different LOD models by performing iterative edge contraction operations. We use deformation distance to analysis the deformation degree of the triangle planes during the whole animation  and define a deformation weight to be added to the aggregated edge contraction cost. Thus features in areas with large deformation can be preserved well. Besides  we propose a mesh optimization method for dynamic model sequence  which can efficiently improve the temporal coherence and reduce visual artifacts between adjacent frames. The results show our approach is efficient  easy to implement  and good quality animated approximations with well-preserved fine details can be generated at any given frame. copy  
An improved method for generating multiresolution animation models (EI CONFERENCE) 会议论文  OAI收割
2009 11th IEEE International Conference on Computer-Aided Design and Computer Graphics, CAD/Graphics 2009, August 19, 2009 - August 21, 2009, Huangshan, China
作者:  
Zhang S.
收藏  |  浏览/下载:36/0  |  提交时间:2013/03/25
In computer graphics  animated models are widely used to represent time-varying data. In this paper  we propose an improved method to generate multiresolution animation models. We use a curvature sensitive quadric error metric (QEM) criterion as our basic measurement  which can preserve local features on the surface. We append a deformation weight to the aggregated edge contraction cost for the whole animation to preserve areas with large deformation. At last  we introduce a mesh optimization method to deal with the animation sequence  which can efficiently improve the temporal coherence and reduce visual artifacts. The results show our approach is efficient  easy to implement  and good quality progressive animation models can be generated at any level of detail. 2009 IEEE.