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Designing Feathers Using Houdini at FOLKS | Amelie Goursat | Paris HIVE 2023
FOLKS VFX artist presents a Houdini-native procedural pipeline for creating realistic bird plumage, covering feather design, grooming, and integration into creature shots.
Abstract
A FOLKS VFX grooming artist demonstrates a Houdini-native procedural pipeline for creating realistic bird plumage, built on SideFX's feather digital assets (feather generator, feather weight, feather groom, feather unpack, feather detangle and feather deform). The workflow begins with heavy reference analysis to identify each feather type and growth zone, then paints density masks tied to FID/fgroup attributes, generates guide curves per feather group, and populates render, mid-res and proxy feather variations on the skin. Proxy feathers are detangled, grouped and exported for rigging, while high-res feathers are wrapped onto the animated proxy using the feather deform node. For shots with many birds, an automatic deform setup propagates feathers without per-bird CFX, with Vellum reserved for cases needing true simulation, procedural noise for wind, and automatic open/closed-wing blendshapes to fix interpenetration on folded wings.
How to read this
- Category
- Production talk: Houdini-native procedural feather pipeline
- Contributions
- Demonstrates a Houdini-native plumage pipeline built on SideFX feather digital assets (generator, weight, groom, unpack, detangle, deform)
- Drives density masks from FID/fgroup attributes and guide curves per feather group, populating render, mid-res, and proxy variations on the skin
- Wraps high-res feathers onto an animated proxy and propagates many-bird shots automatically, reserving Vellum for true simulation and using blendshapes to fix folded-wing interpenetration
- Context
- Applies SideFX's Houdini feather toolset in a VFX creature-grooming context, relating to procedural fur and feather authoring practice.
- Correctness
- Studio practice, not peer-reviewed; results are production-proven at FOLKS, and choices like proxy-based deform versus per-bird Vellum reflect shot-specific tradeoffs rather than a general rule.
- Clarity
- Accessible and demo-driven for Houdini users; one viewing conveys the node-by-node workflow, with the heavy reference-analysis step setting up everything else.
- How to read it
- Watch for the order of operations (reference analysis, density masks, guides, proxy vs high-res, deform wrap) and when simulation is and is not used; one pass suffices unless you are rebuilding the setup.
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Keywords
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