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Visual navigation and three-dimensional (3D) scene reconstruction are essential for robotics to interact with the surrounding environment. Large-scale scenes and critical camera motions are great challenges facing the research community to…

Computer Vision and Pattern Recognition · Computer Science 2021-09-21 Qi Cai , Lilian Zhang , Yuanxin Wu , Wenxian Yu , Dewen Hu

The generation of 3D models from real-world objects has often been accomplished through photogrammetry, i.e., by taking 2D photos from a variety of perspectives and then triangulating matched point-based features to create a textured mesh.…

Computer Vision and Pattern Recognition · Computer Science 2026-02-13 Jacob Rubinstein , Avi Donaty , Don Engel

We propose an approach to 3D reconstruction via inverse procedural modeling and investigate two variants of this approach. The first option consists in the fitting set of input parameters using a genetic algorithm. We demonstrate the…

Graphics · Computer Science 2023-10-23 Albert Garifullin , Nikolay Maiorov , Vladimir Frolov

Generalizable 3D Gaussian Splatting reconstruction showcases advanced Image-to-3D content creation but requires substantial computational resources and large datasets, posing challenges to training models from scratch. Current methods…

Computer Vision and Pattern Recognition · Computer Science 2026-01-05 Xiufeng Huang , Ka Chun Cheung , Runmin Cong , Simon See , Renjie Wan

We propose SparseFusion, a sparse view 3D reconstruction approach that unifies recent advances in neural rendering and probabilistic image generation. Existing approaches typically build on neural rendering with re-projected features but…

Computer Vision and Pattern Recognition · Computer Science 2023-02-17 Zhizhuo Zhou , Shubham Tulsiani

Recovering camera poses from a set of images is a foundational task in 3D computer vision, which powers key applications such as 3D scene/object reconstructions. Classic methods often depend on feature correspondence, such as keypoints,…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Hao Tang , Weiyao Wang , Pierre Gleize , Matt Feiszli

Person re-identification (re-id) remains challenging due to significant intra-class variations across different cameras. Recently, there has been a growing interest in using generative models to augment training data and enhance the…

Computer Vision and Pattern Recognition · Computer Science 2021-05-20 Zhedong Zheng , Xiaodong Yang , Zhiding Yu , Liang Zheng , Yi Yang , Jan Kautz

Social interaction is a fundamental aspect of human behavior and communication. The way individuals position themselves in relation to others, also known as proxemics, conveys social cues and affects the dynamics of social interaction.…

Computer Vision and Pattern Recognition · Computer Science 2023-12-14 Lea Müller , Vickie Ye , Georgios Pavlakos , Michael Black , Angjoo Kanazawa

Despite increasingly realistic image quality, recent 3D image generative models often operate on 3D volumes of fixed extent with limited camera motions. We investigate the task of unconditionally synthesizing unbounded nature scenes,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-24 Lucy Chai , Richard Tucker , Zhengqi Li , Phillip Isola , Noah Snavely

Pairwise pose estimation from images with little or no overlap is an open challenge in computer vision. Existing methods, even those trained on large-scale datasets, struggle in these scenarios due to the lack of identifiable…

Computer Vision and Pattern Recognition · Computer Science 2024-12-23 Ruojin Cai , Jason Y. Zhang , Philipp Henzler , Zhengqi Li , Noah Snavely , Ricardo Martin-Brualla

Despite recent progress, text-to-image models still struggle to generate semantically diverse and compositionally accurate multi-person interaction scenes, often collapsing to repetitive layouts, stereotypical poses, and poorly grounded…

Computer Vision and Pattern Recognition · Computer Science 2026-05-25 Wenxuan Peng , Bharath Hariharan , Hadar Averbuch-Elor

Feed-forward 3D reconstruction offers substantial runtime advantages over per-scene optimization, which remains slow at inference and often fragile under sparse views. However, existing feed-forward methods still have potential for further…

Computer Vision and Pattern Recognition · Computer Science 2026-02-27 Tianyu Chen , Wei Xiang , Kang Han , Yu Lu , Di Wu , Gaowen Liu , Ramana Rao Kompella

Recently, 3D reconstruction and generation have demonstrated impressive novel view synthesis results, achieving high fidelity and efficiency. However, a notable conditioning gap can be observed between these two fields, e.g., scalable 3D…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Sibo Wu , Congrong Xu , Binbin Huang , Andreas Geiger , Anpei Chen

Inferring 3D structure of a generic object from a 2D image is a long-standing objective of computer vision. Conventional approaches either learn completely from CAD-generated synthetic data, which have difficulty in inference from real…

Computer Vision and Pattern Recognition · Computer Science 2021-04-05 Feng Liu , Luan Tran , Xiaoming Liu

Existing point cloud completion methods, which typically depend on predefined synthetic training datasets, encounter significant challenges when applied to out-of-distribution, real-world scans. To overcome this limitation, we introduce a…

Computer Vision and Pattern Recognition · Computer Science 2025-02-28 An Li , Zhe Zhu , Mingqiang Wei

3D human pose reconstruction from single-view camera is a difficult and challenging topic. Many approaches have been proposed, but almost focusing on frame-by-frame independently while inter-frames are highly correlated in a pose sequence.…

Computer Vision and Pattern Recognition · Computer Science 2019-01-11 X. T. Nguyen , T. D. Ngo , T. H. Le

3D pose estimation from a single 2D image is an important and challenging task in computer vision with applications in autonomous driving, robot manipulation and augmented reality. Since 3D pose is a continuous quantity, a natural…

Computer Vision and Pattern Recognition · Computer Science 2018-05-10 Siddharth Mahendran , Haider Ali , Rene Vidal

3D pose estimation from sparse multi-views is a critical task for numerous applications, including action recognition, sports analysis, and human-robot interaction. Optimization-based methods typically follow a two-stage pipeline, first…

Computer Vision and Pattern Recognition · Computer Science 2026-01-15 Tony Danjun Wang , Tolga Birdal , Nassir Navab , Lennart Bastian

Camera pose estimation is a key step in standard 3D reconstruction pipelines that operate on a dense set of images of a single object or scene. However, methods for pose estimation often fail when only a few images are available because…

Computer Vision and Pattern Recognition · Computer Science 2022-12-01 Samarth Sinha , Jason Y. Zhang , Andrea Tagliasacchi , Igor Gilitschenski , David B. Lindell

Pedestrian motion, due to its causal nature, is strongly influenced by domain gaps arising from discrepancies between training and testing data distributions. Focusing on 3D human pose estimation, this work presents a controllable human…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Xinhao Hu , Yiyi Zhang , Liqing Zhang , Jianfu Zhang