OpenUSD 数据标准媒体应用指南

目录 2概述....................................................................2 2.1.1视频制作流程中创建3D数字资产的难点................................................................22.1.2在网络环境中应用3D数字资产的瓶颈.....................................................................32.1.3在开发3D实时互动类型的项目中遇到的问题.......................................................3 2.2OpenUSD数据标准概述.................................................................................................................4 2.2.1OpenUSD发展史.................................................................................................................42.2.2OpenUSD优势......................................................................................................................42.2.3OpenUSD与其他3D数据标准的异同..........................................................................5 3OpenUSD标准技术框架.....................................................5 3.2.1Stage（场景图）..............................................................................................................63.2.2Prim（基本单元）............................................................................................................73.2.3Layer（层）.......................................................................................................................8 3.3OpenUSD的操作机制......................................................................................................................8 3.3.1Composition（合成）.....................................................................................................83.3.2 Composition Arcs（合成弧）.....................................................................................93.3.3VariantSet（变体集）................................................................................................9 3.4OpenUSD的属性............................................................................................................................10 3.4.1Opinions（prim的属性及数值）............................................................................103.4.2Proxy（代理）................................................................................................................103.4.3Proxy与VariantSet的比较.....................................................................................11 4利用OpenUSD提高制作效率和质量..........................................11 4.1利用OpenUSD封装3D数字资产.............................................................................................11 4.1.1资产封装方式..................................................................................................................114.1.2OpenUSD资产封装在模型资产库的应用................................................................164.1.3OpenUSD资产封装在实时引擎流程中的应用.......................................................16 4.2利用OpenUSD应对大数据量的3D场景...............................................................................17 4.2.1利用Reference引用机制...........................................................................................174.2.2利用OpenUSD轻量化数据交互....................................................................................194.2.3利用OpenUSD存储解算特效数据.............................................................................204.2.4利用OpenUSD进行实时物理模拟.............................................................................22 4.3利用OpenUSD提高动画迭代效率...........................................................................................234.4实时渲染OpenUSD场景.............................................................................................................264.5利用OpenUSD轻便化程序建模...............................................................................................264.6利用OpenUSD的扩展功能实现自定义管理........................................................................27 5利用OpenUSD提高协同能力...............................................295.1OpenUSD在团队协同工作中的应用.......................................................................................295.1.1OpenUSD非破坏性工作流............................................................................................295.1.2利用OpenUSD的Layer层机制.................................................................................305.1.3实现OpenUSD场景的异地实时交互........................................................................335.2OpenUSD在云服务中的应用.....................................................................................................345.3利用OpenUSD加强数据安全....................................................................................................355.4OpenUSD在不同软件间的协同应用.......................................................................................365.4.1虚幻引擎与DCC软件之间的协同.............................................................................365.4.2Omniverse与其他设计软件的协同..........................................................................376OpenUSD与AI人工智能应用...............................................386.1利用AI能力自动生成OpenUSD资产....................................................................................386.1.1生成式AI.....................................