Lift4D: Harmonizing Single-View 3D Estimation for 4D Reconstruction In-the-Wild Carnegie Mellon University lift4d.github.io/ Lift4D reconstructs the full geometry, appearance, and deformation of dynamic objects in a scene, including regions never observed by the camera, from a single monocular in-the-wild video.

ml-headsup Large-Scale High-Quality 3D Gaussian Head Reconstruction from Multi-View Captures Apple apple.github.io/ml-headsup/ Abstract We propose HeadsUp, a scalable feed-forward method for reconstructing high-quality 3D Gaussian heads from large-scale multi-camera setups. Our method employs an efficient encoder-decoder architecture that compresses input views into a compact latent representation. This latent representation is then decoded into a set of UV-parameterized 3D Gaussians anchored to a neutral head template. This UV representation decouples the number of 3D Gaussians from the number and resolution of input images, enabling training with many high-resolution input views. We train and evaluate our model on an internal dataset with more than 10,000 subjects, which is an order of magnitude larger than existing multi-view human head datasets. HeadsUp achieves state-of-the-art reconstruction quality and generalizes to novel identities without test-time optimization. We extensively analyze the scaling behavior of our model across identities, views, and model capacity, revealing practical insights for quality-compute trade-offs. Finally, we highlight the strength of our latent space by showcasing two downstream applications: generating novel 3D identities and animating the 3D heads with expression blendshapes.