Effective Annotations Over 3D Models
Effective Annotations Over 3D Models
复制标题
3D 模型上的有效注释
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Roberto Scopigno
中科院分区：
文献类型：
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作者：
F. Ponchio;M. Callieri;M. Dellepiane;Roberto Scopigno
交互式系统中的注释支持通常被CG社区认为是一项简单的任务，因为它需要明显容易地选择区域及其与某些信息的连接。现实似乎更加复杂。本文的范围有两个方面：第一，回顾这一领域的现状，讨论和描述文献中提出的几种方法来管理几何模型上的注释;第二，详细介绍在文化遗产（CH）应用框架中提出和评估的创新解决方案，称为Clippingtool。在注释定义阶段，ClippingView使用3D数据来表征注释区域;随后，通过采用使用模板缓冲区的两遍渲染解决方案来可视化注释，因此无需引入新的几何元素，更改拓扑或复制几何元素。它解决了困扰当前技术水平的大多数问题，例如碎片化，注释转移到多个表示和多分辨率数据编码。后者是生产高效的基于Web的系统的强制性要求。我们实施并全面测试了这种方法，在一个复杂的系统，支持CH恢复项目的文件的框架。
Annotation support in interactive systems is often considered a simple task by the CG community, since it entails the apparently easy selection of a region and its connection with some information. The reality appears more complex. The scope of this paper is two‐fold: first, to review the status of this domain, discussing and characterizing several approaches proposed in literature to manage annotations over geometric models; second, to present in detail an innovative solution proposed and assessed in the framework of Cultural Heritage (CH) applications, called ClippingVolumes. At the annotation definition stage ClippingVolumes uses 3D data to characterize the annotation region; subsequently, annotations are visualized by adopting a two‐pass rendering solution which uses stencil buffers, thus without introducing new geometric elements, changing the topology or duplicating geometry elements. It solves most of the issues that afflict the current state of the art, such as fragmentation, annotation transfer to multiple representations and multi‐resolution data encoding. The latter is a mandatory requirement to produce efficient web‐based systems. We implemented and we fully tested this approach in the framework of a complex system that supports the documentation of CH restoration projects.