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We have previously introduced Spectral Diffusion Posterior Sampling (Spectral DPS) as a framework for accurate one-step material decomposition by integrating analytic spectral system models with priors learned from large datasets. This work…

医学物理 · 物理学 2025-03-31 Xiao Jiang , Grace J. Gang , J. Webster Stayman

We present Uncertainty-aware Cascaded Stereo Network (UCS-Net) for 3D reconstruction from multiple RGB images. Multi-view stereo (MVS) aims to reconstruct fine-grained scene geometry from multi-view images. Previous learning-based MVS…

计算机视觉与模式识别 · 计算机科学 2020-04-21 Shuo Cheng , Zexiang Xu , Shilin Zhu , Zhuwen Li , Li Erran Li , Ravi Ramamoorthi , Hao Su

We propose an online multi-view depth prediction approach on posed video streams, where the scene geometry information computed in the previous time steps is propagated to the current time step in an efficient and geometrically plausible…

计算机视觉与模式识别 · 计算机科学 2021-07-23 Arda Düzçeker , Silvano Galliani , Christoph Vogel , Pablo Speciale , Mihai Dusmanu , Marc Pollefeys

We consider in this work an inverse acoustic scattering problem when only phaseless data is available. The inverse problem is highly nonlinear and ill-posed due to the lack of the phase information. Solving inverse scattering problems with…

数值分析 · 数学 2025-03-26 Jianfeng Ning , Fuqun Han , Jun Zou

The acquisition conditions for low-dose and high-dose CT images are usually different, so that the shifts in the CT numbers often occur. Accordingly, unsupervised deep learning-based approaches, which learn the target image distribution,…

图像与视频处理 · 电气工程与系统科学 2022-07-15 Chanyong Jung , Joonhyung Lee , Sunkyoung You , Jong Chul Ye

To obtain high-resolution depth maps, some previous learning-based multi-view stereo methods build a cost volume pyramid in a coarse-to-fine manner. These approaches leverage fixed depth range hypotheses to construct cascaded plane sweep…

计算机视觉与模式识别 · 计算机科学 2021-03-29 Puyuan Yi , Shengkun Tang , Jian Yao

Multi-task approaches to joint depth and segmentation prediction are well-studied for monocular images. Yet, predictions from a single-view are inherently limited, while multiple views are available in many robotics applications. On the…

计算机视觉与模式识别 · 计算机科学 2023-11-02 Mykhailo Shvets , Dongxu Zhao , Marc Niethammer , Roni Sengupta , Alexander C. Berg

Deep learning based 3D shape generation methods generally utilize latent features extracted from color images to encode the semantics of objects and guide the shape generation process. These color image semantics only implicitly encode 3D…

计算机视觉与模式识别 · 计算机科学 2021-04-13 Rakesh Shrestha , Zhiwen Fan , Qingkun Su , Zuozhuo Dai , Siyu Zhu , Ping Tan

3D reconstruction aims to recover the dense 3D structure of a scene. It plays an essential role in various applications such as Augmented/Virtual Reality (AR/VR), autonomous driving and robotics. Leveraging multiple views of a scene…

计算机视觉与模式识别 · 计算机科学 2026-01-14 Fangjinhua Wang , Qingtian Zhu , Di Chang , Quankai Gao , Junlin Han , Tong Zhang , Richard Hartley , Marc Pollefeys

Accurate stereo depth estimation plays a critical role in various 3D tasks in both indoor and outdoor environments. Recently, learning-based multi-view stereo methods have demonstrated competitive performance with a limited number of views.…

计算机视觉与模式识别 · 计算机科学 2020-06-02 Uday Kusupati , Shuo Cheng , Rui Chen , Hao Su

Multi-View Stereo~(MVS) is a fundamental problem in geometric computer vision which aims to reconstruct a scene using multi-view images with known camera parameters. However, the mainstream approaches represent the scene with a fixed…

计算机视觉与模式识别 · 计算机科学 2023-08-21 Song Zhang , Wenjia Xu , Zhiwei Wei , Lili Zhang , Yang Wang , Junyi Liu

Training semantic segmentation models with few annotated samples has great potential in various real-world applications. For the few-shot segmentation task, the main challenge is how to accurately measure the semantic correspondence between…

计算机视觉与模式识别 · 计算机科学 2022-08-02 Zhitong Xiong , Haopeng Li , Xiao Xiang Zhu

We introduce a novel learning-based method for encoding and manipulating 3D surface meshes. Our method is specifically designed to create an interpretable embedding space for deformable shape collections. Unlike previous 3D mesh…

计算机视觉与模式识别 · 计算机科学 2023-10-30 Sara Hahner , Souhaib Attaiki , Jochen Garcke , Maks Ovsjanikov

We propose DeepMetaHandles, a 3D conditional generative model based on mesh deformation. Given a collection of 3D meshes of a category and their deformation handles (control points), our method learns a set of meta-handles for each shape,…

计算机视觉与模式识别 · 计算机科学 2021-03-30 Minghua Liu , Minhyuk Sung , Radomir Mech , Hao Su

Despite its success in image synthesis, we observe that diffusion probabilistic models (DPMs) often lack contextual reasoning ability to learn the relations among object parts in an image, leading to a slow learning process. To solve this…

计算机视觉与模式识别 · 计算机科学 2024-02-22 Shanghua Gao , Pan Zhou , Ming-Ming Cheng , Shuicheng Yan

We explore learning pixelwise correspondences between images of deformable objects in different configurations. Traditional correspondence matching approaches such as SIFT, SURF, and ORB can fail to provide sufficient contextual information…

计算机视觉与模式识别 · 计算机科学 2020-10-12 Aditya Ganapathi , Priya Sundaresan , Brijen Thananjeyan , Ashwin Balakrishna , Daniel Seita , Ryan Hoque , Joseph E. Gonzalez , Ken Goldberg

We present 3DVNet, a novel multi-view stereo (MVS) depth-prediction method that combines the advantages of previous depth-based and volumetric MVS approaches. Our key idea is the use of a 3D scene-modeling network that iteratively updates a…

计算机视觉与模式识别 · 计算机科学 2021-12-02 Alexander Rich , Noah Stier , Pradeep Sen , Tobias Höllerer

With the rapid development of diffusion models and flow-based generative models, there has been a surge of interests in solving noisy linear inverse problems, e.g., super-resolution, deblurring, denoising, colorization, etc, with generative…

机器学习 · 计算机科学 2024-10-22 Xiangming Meng , Yoshiyuki Kabashima

Dense ground displacement measurements are crucial for geological studies but are impractical to collect directly. Traditionally, displacement fields are estimated using patch matching on optical satellite images from different acquisition…

计算机视觉与模式识别 · 计算机科学 2025-04-21 Juliette Bertrand , Sophie Giffard-Roisin , James Hollingsworth , Julien Mairal

We present a learning based approach for multi-view stereopsis (MVS). While current deep MVS methods achieve impressive results, they crucially rely on ground-truth 3D training data, and acquisition of such precise 3D geometry for…

计算机视觉与模式识别 · 计算机科学 2019-06-07 Tejas Khot , Shubham Agrawal , Shubham Tulsiani , Christoph Mertz , Simon Lucey , Martial Hebert