中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共7条,第1-7条 帮助

条数/页: 排序方式:
Analysis on velocity distribution and displacement along the profile of a slope using both empirical and analytical methods 期刊论文  OAI收割
Journal of Mountain Science, 2017, 卷号: 14, 期号: 12, 页码: 2589-2602
作者:  
CHEN Tie-lin;  ZHOU Cheng;  LIU En-long;  DAI Feng;  LIU Jiao
  |  收藏  |  浏览/下载:236/0  |  提交时间:2017/12/07
Progressive Modelling of the Gravity-induced Landslide Using the Local Dynamic Strength Reduction Method 期刊论文  OAI收割
Journal of Mountain Science, 2013, 卷号: 10, 期号: 4, 页码: 532-540
CHEN Guo-qing; HUANG Run-qiu; XU Qiang; LI Tian-bin; ZHU Ming-lei
收藏  |  浏览/下载:118/0  |  提交时间:2013/07/15
An improved algorithm to generate high quality progressive animation models (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Biomedical Engineering and Computer Science, ICBECS 2010, April 23, 2010 - April 25, 2010, Wuhan, China
作者:  
Zhao J.;  Zhang S.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
In computer graphics  investigation has been made in many years in progressive models generation to alleviate the workload of visualization processing. However  most of the existing algorithms only focus on static meshes  and very little works are to deal with animation models. In this paper  we propose an improved method for generating progressive multiresolution animation models. By the method we first use a normal deviation parameter to improve the famous QEM method as our basic edge contraction metric to generate a base hierarchy. The sequence of the simplified models is generated progressively from the first frame to the last one. Based on the edge contraction sequence in the previous frame  the contraction order in the current frame is adjusted according to the deformation degree. We demonstrate that our method works efficiently and can generate better approximations with well-preserved features than previous methods. 2010 IEEE.  
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.  
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.  
Shear-hosted mesothermal vein system in the Jiapigou Goldfield, Northeast China: Implication for subsequent exploration 期刊论文  OAI收割
RESOURCE GEOLOGY, 2003, 卷号: 53, 期号: 1, 页码: 1-10
作者:  
Liu, HT;  Liu, JM;  Sun, SH;  Zhai, MG
  |  收藏  |  浏览/下载:20/0  |  提交时间:2018/09/26
Shear-hosted mesothermal vein system in the Jiapigou Goldfield, Northeast China: Implication for subsequent exploration 期刊论文  OAI收割
RESOURCE GEOLOGY, 2003, 卷号: 53, 期号: 1, 页码: 1-10
作者:  
Liu, HT;  Liu, JM;  Sun, SH
  |  收藏  |  浏览/下载:23/0  |  提交时间:2018/09/26