权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Unifying NURBS and subdivision: Extracting sparse shape descriptions using NURBS-compatible subdivision

统一 NURBS 和细分：使用 NURBS 兼容的细分提取稀疏形状描述

基本信息

批准号：
EP/H030115/1
负责人：
Neil Dodgson
金额：
$ 84.7万
依托单位：
University of Cambridge
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2010
资助国家：
英国
起止时间：
2010 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FH030115%2F1
关键词：
Unifying NURBS subdivision Extracting sparse

项目摘要

We will investigate methods to improve the work-flow of 3D designers, in engineering (cars, aircraft, ships) and entertainment (animation and special effects). We begin with our recent work that reconciled the two principal representations of 3D models: NURBS, used in both engineering and entertainment, and subdivision surfaces, used principally in entertainment. Our work brings the flexibility of the subdivision approach to the rigorous requirements of the engineering applications without having to forgo the significant advantages of the NURBS approach. This has been a research goal for thirty years. Our recent paper is the first piece of work to achieve this ( NURBS with extraordinary points: high-degree non-uniform subdivision surfaces published at the prestigious ACM SIGGRAPH conference and in the ACM journal Transactions on Graphics ).This grant carries forward the work in two inter-connected strands.Strand 1 investigates ways in which the new method can speed the capture of 3D models. Many engineering and entertainment models are still made using clay. The clay model must be captured and then converted into a numerical representation, using either NURBS or subdivision. This first strand will look at ways in which we can capture a clay model and produce a good internal representation that can be used for further manipulation of the model. Our new modelling method will be of benefit here, as it allows us to use the flexibility of subdivision, while still being compatible with the engineering-friendly NURBS method.Strand 2 extends the capabilities of our new method. We will investigate various ways in which it can be improved, to provide a richer modelling tool for 3D designers. The improvements will feed across into Strand 1, while the experience in Strand 1 will inform the particular improvements that we investigate in Strand 2.If we are successful, we can expect our methods to be taken up in the main computer-aided design systems. This will bring improvements in 3D design work flow, so that cars, aircraft, and animated characters can be modelled more quickly and more flexibly than before.

我们将研究改进工程（汽车、飞机、船舶）和娱乐（动画和特效）领域 3D 设计师工作流程的方法。我们从最近的工作开始，该工作协调了 3D 模型的两种主要表示形式：NURBS（用于工程和娱乐）和细分曲面（主要用于娱乐）。我们的工作将细分方法的灵活性满足了工程应用的严格要求，而不必放弃 NURBS 方法的显着优势。这一直是三十年来的研究目标。我们最近的论文是实现这一目标的第一篇工作（具有非凡点的 NURBS：高度非均匀细分曲面，发表在著名的 ACM SIGGRAPH 会议和 ACM 期刊 Transactions on Graphics 上）。这项资助以两个相互关联的分支推进了这项工作。第 1 分支研究了新方法可以加速 3D 模型捕获的方式。许多工程和娱乐模型仍然是用粘土制作的。必须捕获粘土模型，然后使用 NURBS 或细分将其转换为数字表示形式。第一条线将研究如何捕获粘土模型并生成可用于进一步操作模型的良好内部表示。我们的新建模方法在这里将大有裨益，因为它允许我们利用细分的灵活性，同时仍然与工程友好的 NURBS 方法兼容。Strand 2 扩展了我们新方法的功能。我们将研究各种改进方法，为 3D 设计师提供更丰富的建模工具。这些改进将反馈到 Strand 1 中，而 Strand 1 中的经验将为我们在 Strand 2 中研究的特定改进提供信息。如果我们成功，我们可以预期我们的方法将在主要的计算机辅助设计系统中得到采用。这将带来 3D 设计工作流程的改进，使汽车、飞机和动画角色的建模比以前更快、更灵活。