The Gnomon Workshop – Vellum Hair Simulation in Houdini

通过萨拉夫米特·辛格 (Saravmit Singh) 撰写的这本全面指南，您将深入了解如何在专业级角色特效工作流程中模拟毛发。本书着重于弥合个人实验与行业标准实践之间的差距，萨拉夫米特将指导您如何构建专业级模板、使用 dGroom 工作流程创建自定义工具，以及如何设置自动缓存系统，从而提高模拟的效率和可靠性。这些专业技巧既适用于工作室流程，也适用于个人项目。

这个为期 4.5 小时的工作坊专为熟悉 Houdini 并希望提升毛发制作技能以满足制作需求的进阶及高级艺术家设计。通过使用预制毛发模型（工作坊不提供）的实际案例，艺术家将学习如何创建强大的制作模板并构建自定义工具以简化工作流程。

本次研讨会涵盖的关键技术包括构建和本地化高动态范围模型 (HDA)、设计带有曲线斜坡控制器的自定义弯曲约束，以及开发可在资产更新时无缝重新运行仿真的自动化设置。除了技术培训外，研讨会还提供来自实际生产经验的宝贵行业见解，包括协作技巧、资产管理技巧以及大型项目中常见问题的故障排除技巧。

通过完成本次研讨会，艺术家们将全面了解如何在制作环境中模拟头发，同时保持效率、可扩展性和镜头间的一致性。

本研讨会提供的 Chipmunk 场景项目文件由 Andriy Bilichenko 和 Aleksandar Horak 创建，由 SideFX 提供。

Duration 4h 56m Project Files Included MP4

Title: The Gnomon Workshop – Vellum Hair Simulation in Houdini

Info:

Develop a complete understanding of how to simulate hair within a production-level Character FX workflow with this comprehensive guide by Saravmit Singh. Focusing on bridging the gap between personal experimentation and industry-standard practices, Saravmit teaches how to build production-level templates, create custom tools with the dGroom workflow, and set up an automatic caching system to make your simulation more efficient and reliable. These professional techniques will be applicable to both studio pipelines and personal projects.

This 4.5-hour workshop is designed for intermediate- to advanced-level artists who are familiar with Houdini and want to elevate their grooming skills to meet the demands of production. Through practical examples using a premade groom (not provided with this workshop), artists will learn how to create robust production templates and build custom tools that streamline workflows.

Key techniques covered in this workshop include building and localizing HDAs, designing a custom bend constraint with curve ramp controllers, and developing automated setups that can seamlessly rerun simulations when assets are updated. In addition to technical training, the workshop also provides valuable industry insights drawn from real production experience, including tips on collaboration, asset management, and troubleshooting common issues encountered on large-scale projects.

By completing this workshop, artists will gain a comprehensive understanding of how to simulate hair in a production environment while maintaining efficiency, scalability, and consistency across shots.

The Chipmunk scene project file provided with this workshop was created by Andriy Bilichenko and Aleksandar Horak, courtesy of SideFX.

The groom featured in this workshop is by Gnomon Workshop Instructor, Luis Cadavid. Saravmit also utilizes the dGroom tool by Deepak Rajan.
Software Used
Houdini