Union and Clear Angle debut relightable Gaussian Splat crowd pipeline

This development marks a transition for Gaussian Splatting from a research curiosity to a controllable B2B production tool. By solving the relighting challenge—previously a bottleneck for neural rendering—Union is offering a bridge between high-fidelity volumetric capture and standard VFX pipelines. For the ecosystem, this technology significantly reduces the ‘uncanny valley’ in digital crowd scenes while lowering the labor costs associated with manual geometry cleanup and rigging. Studios should watch for the adoption of this pipeline in upcoming blockbuster titles as a benchmark for whether volumetric assets can fully replace traditional 3D mesh-based crowd agents in high-end streaming and theatrical content.

Union VFX has branded its relightable Gaussian Splat workflow as "Dynamic Splats" and is already deploying it on a major feature film production. The pipeline combines high-fidelity volumetric capture with flexible VFX integration, enabling productions to create realistic crowds and digital doubles at scale, with the company noting that Gaussian Splatting is a machine learning process that does not involve generative AI. Union states it is the only studio currently offering truly relightable Gaussian Splats in production, positioning the technology as a replacement for traditional CG crowd agents that require extensive modelling, rigging, and animation.

Clear Angle Studios, which provides the capture infrastructure for Union's pipeline, has built the Volumetric Capture Rig on 13 years of development following its earlier "Dorothy" facial capture and full-body systems. Those prior systems have been used on projects for studios including Disney, Universal and Netflix, establishing Clear Angle's track record in high-end capture for major productions. The VCR can be configured for close-up facial capture, single-performer work, stunt performance, group crowds, and larger volumetric performance spaces, making it adaptable across production types.

The technical significance of Union's approach lies in solving the relighting problem that has limited Gaussian Splats in production environments. In an fxguide podcast, VFX supervisor David Schneider explained how Union and Clear Angle built a pipeline that allows splats to be relit inside CG scenes using production lighting, cast and receive shadows, and be treated by compositors much more like traditional CG assets. Traditional CG crowds require agent systems and extensive variation work, while card-based crowds fall apart when lighting or camera movement changes. Union's method captures real human performances as splats, instances them into large-scale environments, and then relights and art-directs them shot by shot, representing a distinct middle path between those two established approaches.