首页> 外文学位 >LDI tree: A sampling rate preserving and hierarchical data representation for image-based rendering.
【24h】

LDI tree: A sampling rate preserving and hierarchical data representation for image-based rendering.

机译:LDI树:用于基于图像的渲染的保留采样率和分层数据表示。

获取原文
获取原文并翻译 | 示例

摘要

Multiple reference images are required to eliminate disocclusion artifacts in image-based rendering based on McMillan's 3D image warping. Simply warping each individual reference image causes the rendering time to grow linearly with the number of reference images. This calls for a new data representation for merging multiple reference images.; In this dissertation I present a hierarchical data representation, the LDI Tree, for merging reference images. It is distinguished from previous works by identifying the sampling rate issue and preserving the sampling rates of the reference images by adaptively selecting a suitable level in the hierarchy for each pixel. During rendering, the traversal of the LDI Tree is limited to the levels that are comparable to the sampling rate of the output image. This allows the rendering time to be driven by the requirements of output images instead of the number of input images. I also present a progressive refinement feature and a hole-filling algorithm implemented by pre-filtering the LDI Tree.; I show that the amount of memory required has the same order of growth as the 2D reference images in the worst case. I also show that the rendering time depends mostly on the quality of the output image, while the number of reference images has a relatively small impact.
机译:需要多个参考图像,以消除基于McMillan的3D图像变形的基于图像的渲染中的遮挡伪影。简单地扭曲每个单独的参考图像会使渲染时间随参考图像的数量线性增长。这需要用于合并多个参考图像的新数据表示形式。在本文中,我提出了一种用于合并参考图像的分层数据表示形式LDI树。通过识别采样率问题并通过为每个像素自适应选择层次结构中的合适级别来保留参考图像的采样率,与以前的工作有所不同。在渲染期间,LDI树的遍历仅限于与输出图像的采样率可比的级别。这允许渲染时间由输出图像的需求而不是输入图像的数量来驱动。我还介绍了通过逐步过滤LDI树实现的渐进式细化功能和孔填充算法。我表明,在最坏的情况下,所需的内存量具有与2D参考图像相同的增长顺序。我还表明,渲染时间主要取决于输出图像的质量,而参考图像的数量影响相对较小。

著录项

  • 作者

    Chang, Chun-Fa.;

  • 作者单位

    The University of North Carolina at Chapel Hill.;

  • 授予单位 The University of North Carolina at Chapel Hill.;
  • 学科 Computer Science.
  • 学位 Ph.D.
  • 年度 2001
  • 页码 76 p.
  • 总页数 76
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自动化技术、计算机技术;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号