Search Results for author: Yunzhi Zhang

Found 17 papers, 5 papers with code

3D Congealing: 3D-Aware Image Alignment in the Wild

no code implementations2 Apr 2024 Yunzhi Zhang, Zizhang Li, Amit Raj, Andreas Engelhardt, Yuanzhen Li, Tingbo Hou, Jiajun Wu, Varun Jampani

The framework optimizes for the canonical representation together with the pose for each input image, and a per-image coordinate map that warps 2D pixel coordinates to the 3D canonical frame to account for the shape matching.

Pose Estimation

SHINOBI: Shape and Illumination using Neural Object Decomposition via BRDF Optimization In-the-wild

no code implementations18 Jan 2024 Andreas Engelhardt, Amit Raj, Mark Boss, Yunzhi Zhang, Abhishek Kar, Yuanzhen Li, Deqing Sun, Ricardo Martin Brualla, Jonathan T. Barron, Hendrik P. A. Lensch, Varun Jampani

We present SHINOBI, an end-to-end framework for the reconstruction of shape, material, and illumination from object images captured with varying lighting, pose, and background.

Inverse Rendering Object

Learning the 3D Fauna of the Web

no code implementations4 Jan 2024 Zizhang Li, Dor Litvak, Ruining Li, Yunzhi Zhang, Tomas Jakab, Christian Rupprecht, Shangzhe Wu, Andrea Vedaldi, Jiajun Wu

We show that prior category-specific attempts fail to generalize to rare species with limited training images.

Ponymation: Learning 3D Animal Motions from Unlabeled Online Videos

no code implementations21 Dec 2023 Keqiang Sun, Dor Litvak, Yunzhi Zhang, Hongsheng Li, Jiajun Wu, Shangzhe Wu

We introduce Ponymation, a new method for learning a generative model of articulated 3D animal motions from raw, unlabeled online videos.

Motion Synthesis

Language-Informed Visual Concept Learning

no code implementations6 Dec 2023 Sharon Lee, Yunzhi Zhang, Shangzhe Wu, Jiajun Wu

To encourage better disentanglement of different concept encoders, we anchor the concept embeddings to a set of text embeddings obtained from a pre-trained Visual Question Answering (VQA) model.

Disentanglement Novel Concepts +2

ZeroNVS: Zero-Shot 360-Degree View Synthesis from a Single Real Image

no code implementations27 Oct 2023 Kyle Sargent, Zizhang Li, Tanmay Shah, Charles Herrmann, Hong-Xing Yu, Yunzhi Zhang, Eric Ryan Chan, Dmitry Lagun, Li Fei-Fei, Deqing Sun, Jiajun Wu

Further, we observe that Score Distillation Sampling (SDS) tends to truncate the distribution of complex backgrounds during distillation of 360-degree scenes, and propose "SDS anchoring" to improve the diversity of synthesized novel views.

Novel View Synthesis

Seeing a Rose in Five Thousand Ways

no code implementations CVPR 2023 Yunzhi Zhang, Shangzhe Wu, Noah Snavely, Jiajun Wu

These instances all share the same intrinsics, but appear different due to a combination of variance within these intrinsics and differences in extrinsic factors, such as pose and illumination.

Image Generation Intrinsic Image Decomposition +1

Translating a Visual LEGO Manual to a Machine-Executable Plan

no code implementations25 Jul 2022 Ruocheng Wang, Yunzhi Zhang, Jiayuan Mao, Chin-Yi Cheng, Jiajun Wu

We study the problem of translating an image-based, step-by-step assembly manual created by human designers into machine-interpretable instructions.

3D Pose Estimation Keypoint Detection

MaskViT: Masked Visual Pre-Training for Video Prediction

no code implementations23 Jun 2022 Agrim Gupta, Stephen Tian, Yunzhi Zhang, Jiajun Wu, Roberto Martín-Martín, Li Fei-Fei

This work shows that we can create good video prediction models by pre-training transformers via masked visual modeling.

Scheduling Video Prediction

Video Extrapolation in Space and Time

no code implementations4 May 2022 Yunzhi Zhang, Jiajun Wu

Novel view synthesis (NVS) and video prediction (VP) are typically considered disjoint tasks in computer vision.

Novel View Synthesis Video Prediction

VideoGPT: Video Generation using VQ-VAE and Transformers

3 code implementations20 Apr 2021 Wilson Yan, Yunzhi Zhang, Pieter Abbeel, Aravind Srinivas

We present VideoGPT: a conceptually simple architecture for scaling likelihood based generative modeling to natural videos.

Position Video Generation

VideoGen: Generative Modeling of Videos using VQ-VAE and Transformers

no code implementations1 Jan 2021 Yunzhi Zhang, Wilson Yan, Pieter Abbeel, Aravind Srinivas

We present VideoGen: a conceptually simple architecture for scaling likelihood based generative modeling to natural videos.

Position Video Generation

Automatic Curriculum Learning through Value Disagreement

1 code implementation NeurIPS 2020 Yunzhi Zhang, Pieter Abbeel, Lerrel Pinto

Our key insight is that if we can sample goals at the frontier of the set of goals that an agent is able to reach, it will provide a significantly stronger learning signal compared to randomly sampled goals.

Reinforcement Learning (RL)

Asynchronous Methods for Model-Based Reinforcement Learning

1 code implementation28 Oct 2019 Yunzhi Zhang, Ignasi Clavera, Boren Tsai, Pieter Abbeel

In this work, we propose an asynchronous framework for model-based reinforcement learning methods that brings down the run time of these algorithms to be just the data collection time.

Model-based Reinforcement Learning reinforcement-learning +1

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