ZPressor: Bottleneck-Aware Compression for Scalable Feed-Forward 3DGS
Feed-forward 3D Gaussian Splatting (3DGS) models have recently emerged as a
promising solution for novel view synthesis, enabling one-pass inference
without the need for per-scene 3DGS optimization. However, their scalability is
fundamentally constrained by the limited capacity of their encoders, leading to
degraded performance or excessive memory consumption as the number of input
views increases. In this work, we analyze feed-forward 3DGS frameworks through
the lens of the Information Bottleneck principle and introduce ZPressor, a
lightweight architecture-agnostic module that enables efficient compression of
multi-view inputs into a compact latent state Z that retains essential scene
information while discarding redundancy. Concretely, ZPressor enables existing
feed-forward 3DGS models to scale to over 100 input views at 480P resolution on
an 80GB GPU, by partitioning the views into anchor and support sets and using
cross attention to compress the information from the support views into anchor
views, forming the compressed latent state Z. We show that integrating
ZPressor into several state-of-the-art feed-forward 3DGS models consistently
improves performance under moderate input views and enhances robustness under
dense view settings on two large-scale benchmarks DL3DV-10K and RealEstate10K.
The video results, code and trained models are available on our project page:
https://lhmd.top/zpressor.
683919ddf85de1fc563e0d1c
Weijie Wang
claimed_verified
2025-05-30T06:53:41.133Z
66699aa8a33847217b5a49c7
https://cdn-avatars.huggingface.co/v1/production/uploads/noauth/u8Z-6U8U7ARXOpdBDI7Qm.png
Weijie Wang
user
lhmd
683919ddf85de1fc563e0d1d
Donny Y. Chen
extracted_confirmed
2025-08-14T06:02:13.851Z
653862bdbe39573b3b247b44
https://cdn-avatars.huggingface.co/v1/production/uploads/653862bdbe39573b3b247b44/oMqOC4USbQlPX5HFLDXt6.jpeg
Donny Chen
user
donydchen
683919ddf85de1fc563e0d1e
Zeyu Zhang
claimed_verified
2025-08-06T19:36:31.678Z
64ec877bb93654d4ca5c92e9
https://cdn-avatars.huggingface.co/v1/production/uploads/64ec877bb93654d4ca5c92e9/GvHk_KSdE9Rhnk_o-NaZX.jpeg
Zeyu Zhang
user
SteveZeyuZhang
683919ddf85de1fc563e0d1f
Duochao Shi
claimed_verified
2025-06-06T07:42:15.066Z
661d1f83ea3df2195a7c2924
/avatars/dec49fc1d79913b07b57ccbef079198f.svg
dcshi
user
dc-walker
683919ddf85de1fc563e0d20
Akide Liu
683919ddf85de1fc563e0d21
Bohan Zhuang
ZPressor: Bottleneck-Aware Compression for Scalable Feed-Forward 3DGS
Feed-forward 3D Gaussian Splatting (3DGS) models have recently emerged as a
promising solution for novel view synthesis, enabling one-pass inference
without the need for per-scene 3DGS optimization. However, their scalability is
fundamentally constrained by the limited capacity of their encoders, leading to
degraded performance or excessive memory consumption as the number of input
views increases. In this work, we analyze feed-forward 3DGS frameworks through
the lens of the Information Bottleneck principle and introduce ZPressor, a
lightweight architecture-agnostic module that enables efficient compression of
multi-view inputs into a compact latent state Z that retains essential scene
information while discarding redundancy. Concretely, ZPressor enables existing
feed-forward 3DGS models to scale to over 100 input views at 480P resolution on
an 80GB GPU, by partitioning the views into anchor and support sets and using
cross attention to compress the information from the support views into anchor
views, forming the compressed latent state Z. We show that integrating
ZPressor into several state-of-the-art feed-forward 3DGS models consistently
improves performance under moderate input views and enhances robustness under
dense view settings on two large-scale benchmarks DL3DV-10K and RealEstate10K.
The video results, code and trained models are available on our project page:
https://lhmd.top/zpressor.
ZPressor, a lightweight module, compresses multi-view inputs for feed-forward 3D Gaussian Splatting models, enhancing their scalability and performance under dense view settings.
Gaussian Splatting Information Bottleneck cross attention latent state multi-view inputs feed-forward models novel view synthesis DL3DV-10K RealEstate10K