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浏览/检索结果: 共12条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Layout-Aware Single-Image Document Flattening 期刊论文  OAI收割 ACM Transactions on Graphics, 2023, 卷号: 43, 期号: 1, 页码: 9: 1-17 作者:  Li, Pu;  Quan, Weize;  Guo, Jianwei;  Yan, Dong-Ming   |  收藏  |  浏览/下载：15/0  |  提交时间：2024/06/03 Document Image Rectiication  Document Layout Analysis  Deep Neural Networks  Geometric Models   A Conceptual Framework for the Automated Generalization of Geological Maps Based on Multiple Agents and Workflow 期刊论文  OAI收割 IEEE ACCESS, 2016, 卷号: 4, 页码: 6374-6385 作者:  Zhang, Junqiang;  Wu, Chonglong;  Wang, Lizhe 收藏  |  浏览/下载：21/0  |  提交时间：2017/04/24 GEOMETRIC CALIBRATION  SUBPIXEL CORRELATION  IMAGING SATELLITES  ORIENTATION  MODELS   空中手写字符识别系统研究 学位论文  OAI收割 工学硕士, 中国科学院自动化研究所: 中国科学院大学, 2014 靳潇杰 收藏  |  浏览/下载：227/0  |  提交时间：2015/09/02 视觉手势字符  联机字符串识别  删除几何模型  手指轨迹跟踪  visual gesture character string  online character string recognition  deletion geometric models  fingertip trajectory capturing   A quantitative morphometric comparison of cockpit and doline karst landforms SCI/SSCI论文  OAI收割 2014 作者:  Ge Y. 收藏  |  浏览/下载：42/0  |  提交时间：2014/12/24 cockpit  doline  contours  morphometric characteristics  topographic  map  karst  digital elevation models  geometric signature  southern china  terrain  geomorphometry  elements  guilin  tower  maps  dems   Handwritten Chinese Text Recognition by Integrating Multiple Contexts 期刊论文  OAI收割 IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, 2012, 卷号: 34, 期号: 8, 页码: 1469-1481 作者:  Wang, Qiu-Feng;  Yin, Fei;  Liu, Cheng-Lin 收藏  |  浏览/下载：40/0  |  提交时间：2015/08/12 Handwritten Chinese text recognition  confidence transformation  geometric models  language models  refined beam search  candidate character augmentation  maximum character accuracy training   A 3-dimensional polynomial model for geometric corrections of airborne SAR images 会议论文  OAI收割 Remote Sensing of the Environment: The 17th China Conference on Remote Sensing Song, Jingjing; Liao, Jingjuan 收藏  |  浏览/下载：14/0  |  提交时间：2014/12/07 3D Polynomial Models  Airborne SAR image  Geometric correction  SAR  image model  Ridge regression  ORTHO-RECTIFICATION   Optimal multiresolution dynamic models generation based on triangle importance (EI CONFERENCE) 会议论文  OAI收割 2nd International Conference on Image Analysis and Signal Processing, IASP'2010, April 12, 2010 - April 14, 2010, Xiamen, China 作者:  Zhao J.;  Zhang S. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 In this paper  we propose an efficient method to generate optimal multiresolution dynamic models. By the method  we define the triangle importance degree as a weight parameter to be embedded to the edge contraction cost  so the new metric can not only measure distance error but also reflect geometric variation of local areas. A deformation degree weight is appended to the aggregated edge contraction cost for the whole animation  thus sharp features on areas with large deformation can be preserved. In addition  a process of mesh optimization and validity check can further alleviate the geometric distortion of the approximations. Our approach is efficient in operation  easy for implementation  and as a result high quality of dynamic approximations with well-preserved fine details can be generated at any given frame. 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.   Animated models coarsening with local area distortion and deformation degree control (EI CONFERENCE) 会议论文  OAI收割 International Conference on Image Processing and Pattern Recognition in Industrial Engineering, August 7, 2010 - August 8, 2010, Xi'an, China 作者:  Zhang S.;  Zhao J. 收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25 In computer graphics applications  mesh coarsening is an important technique to alleviate the workload of visualization processing. Compared to the extensive works on static model approximation  very little attentions have been paid to animated models. In this paper  we propose a new method to approximate animated models with local area distortion and deformation degree control. Our method uses an improved quadric error metric guided by a local area distortion measurement as a basic hierarchy. Also  we define a deformation degree parameter to be embedded into the aggregated quadric errors  so areas with large deformation during the animation can be successfully preserved. 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 sharp features can be generated at any given frame. 2010 SPIE.   Formalizing natural-language spatial relations between linear objects with topological and metric properties SCI/SSCI论文  OAI收割 2007 作者:   收藏  |  浏览/下载：22/0  |  提交时间：2012/06/08 spatial relations  linear objects  formalization  topology  geometric  indices  natural-language queries  models