[KongchangAI]
PaperScene Composition with Instanced Neural Primitives

SCION

A compositional 3D scene representation method proposed by Princeton University that constructs a reusable vocabulary of neural primitives and lightweight world-space instances, enabling compact and efficient neural scene representation and rendering with support for instance-level scene editing and animation.

Timeline (last 90 days)

Oct 5

SCION (Scene Composition with Instanced Neural Primitives) was proposed by a team from Princeton University.

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Oct 5

SCION replaces mutually independent Gaussian primitives with a compact, reusable vocabulary of primitives, and then uses lightweight world-space instances to place transformed copies of the primitives throughout the scene.

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Oct 5

SCION adopts a joint optimization strategy for discrete and continuous parameters, combined with two-level densification at both the splat and instance levels.

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Oct 5

SCION introduces an adversarial loss to preserve fine details across shared primitives, preventing details from being averaged out and blurred when multiple instances share a template.

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Oct 5

SCION maintains relatively high rendering quality even when compressed to an extremely small size of 1.2 MB.

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Oct 5

SCION outperforms existing Gaussian compression methods in rate-distortion performance.

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Oct 5

SCION's representation supports instance-level scene editing and animation without requiring retraining.

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Oct 5

The SCION project homepage is publicly available at the Princeton Computational Imaging Lab (light.princeton.edu/SCION).

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