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Reconstructing general dynamic scenes is important for many computer vision and graphics applications. Recent works represent the dynamic scene with neural radiance fields for photorealistic view synthesis, while their surface geometry is…

计算机视觉与模式识别 · 计算机科学 2023-03-02 Decai Chen , Haofei Lu , Ingo Feldmann , Oliver Schreer , Peter Eisert

Currently, the area of geometric modeling and the construction of 3D models based on point clouds from laser sensors is actively developing. One of the basic tasks of geometric modeling is the reconstruction of a surface from a cloud of…

分布式、并行与集群计算 · 计算机科学 2024-01-09 Marat Ildarovich Khabibulin

We study the problem of reconstructing an image from information stored at contour locations. We show that high-quality reconstructions with high fidelity to the source image can be obtained from sparse input, e.g., comprising less than…

计算机视觉与模式识别 · 计算机科学 2018-04-11 Tali Dekel , Chuang Gan , Dilip Krishnan , Ce Liu , William T. Freeman

We integrate two powerful ideas, geometry and deep visual representation learning, into recurrent network architectures for mobile visual scene understanding. The proposed networks learn to "lift" and integrate 2D visual features over time…

计算机视觉与模式识别 · 计算机科学 2019-04-10 Hsiao-Yu Fish Tung , Ricson Cheng , Katerina Fragkiadaki

Transformers process tokens in parallel but are temporally shallow: at position $t$, each layer attends to key-value pairs computed based on the previous layer, yielding a depth capped by the number of layers. Recurrent models offer…

机器学习 · 计算机科学 2026-04-24 Costin-Andrei Oncescu , Depen Morwani , Samy Jelassi , Alexandru Meterez , Mujin Kwun , Sham Kakade

This work tackles the challenging task of achieving real-time novel view synthesis for reflective surfaces across various scenes. Existing real-time rendering methods, especially those based on meshes, often have subpar performance in…

计算机视觉与模式识别 · 计算机科学 2024-08-16 Chaojie Ji , Yufeng Li , Yiyi Liao

Point cloud processing is very challenging, as the diverse shapes formed by irregular points are often indistinguishable. A thorough grasp of the elusive shape requires sufficiently contextual semantic information, yet few works devote to…

计算机视觉与模式识别 · 计算机科学 2019-09-10 Yongcheng Liu , Bin Fan , Gaofeng Meng , Jiwen Lu , Shiming Xiang , Chunhong Pan

Temporal correspondence - linking pixels or objects across frames - is a fundamental supervisory signal for the video models. For the panoptic understanding of dynamic scenes, we further extend this concept to every segment. Specifically,…

计算机视觉与模式识别 · 计算机科学 2021-06-18 Sanghyun Woo , Dahun Kim , Joon-Young Lee , In So Kweon

We learn a self-supervised, single-view 3D reconstruction model that predicts the 3D mesh shape, texture and camera pose of a target object with a collection of 2D images and silhouettes. The proposed method does not necessitate 3D…

计算机视觉与模式识别 · 计算机科学 2020-03-17 Xueting Li , Sifei Liu , Kihwan Kim , Shalini De Mello , Varun Jampani , Ming-Hsuan Yang , Jan Kautz

Existing methods for the 4D reconstruction of general, non-rigidly deforming objects focus on novel-view synthesis and neglect correspondences. However, time consistency enables advanced downstream tasks like 3D editing, motion analysis, or…

计算机视觉与模式识别 · 计算机科学 2023-08-17 Edith Tretschk , Vladislav Golyanik , Michael Zollhoefer , Aljaz Bozic , Christoph Lassner , Christian Theobalt

Combining the signed distance function (SDF) and differentiable volume rendering has emerged as a powerful paradigm for surface reconstruction from multi-view images without 3D supervision. However, current methods are impeded by requiring…

计算机视觉与模式识别 · 计算机科学 2024-06-05 Rui Peng , Xiaodong Gu , Luyang Tang , Shihe Shen , Fanqi Yu , Ronggang Wang

Neural implicit mapping has emerged as a powerful paradigm for robotic navigation and scene understanding. However, real-world robotic deployment requires continual adaptation to changing environments under strict memory and computation…

机器人学 · 计算机科学 2026-05-29 Xunlan Zhou , Hongrui Zhao , Negar Mehr

Scene understanding is an important capability for robots acting in unstructured environments. While most SLAM approaches provide a geometrical representation of the scene, a semantic map is necessary for more complex interactions with the…

计算机视觉与模式识别 · 计算机科学 2019-06-18 Radu Alexandru Rosu , Jan Quenzel , Sven Behnke

Continuous sign language recognition (cSLR) is a public significant task that transcribes a sign language video into an ordered gloss sequence. It is important to capture the fine-grained gloss-level details, since there is no explicit…

计算机视觉与模式识别 · 计算机科学 2021-07-28 Pan Xie , Zhi Cui , Yao Du , Mengyi Zhao , Jianwei Cui , Bin Wang , Xiaohui Hu

In this work, we present a novel approach for reconstructing shape point clouds using planar sparse cross-sections with the help of generative modeling. We present unique challenges pertaining to the representation and reconstruction in…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Aradhya N. Mathur , Apoorv Khattar , Ojaswa Sharma

We propose a level-set-based semi-Lagrangian method on graded adaptive Cartesian grids to address the problem of surface reconstruction from point clouds. The goal is to obtain an implicit, high-quality representation of real shapes that…

数值分析 · 数学 2026-03-26 Silvia Preda , Matteo Semplice

Topological data analysis provides a set of tools to uncover low-dimensional structure in noisy point clouds. Prominent amongst the tools is persistence homology, which summarizes birth-death times of homological features using data objects…

统计方法学 · 统计学 2024-02-05 James Matuk , Sebastian Kurtek , Karthik Bharath

Man-made objects usually exhibit descriptive curved features (i.e., curve networks). The curve network of an object conveys its high-level geometric and topological structure. We present a framework for extracting feature curve networks…

图形学 · 计算机科学 2016-03-30 Yuanhao Cao , Liangliang Nan , Peter Wonka

Motion during acquisition of a set of projections can lead to significant motion artifacts in computed tomography reconstructions despite fast acquisition of individual views. In cases such as cardiac imaging, motion may be unavoidable and…

图像与视频处理 · 电气工程与系统科学 2022-01-19 Kunal Gupta , Brendan Colvert , Francisco Contijoch

Surface meshes are widely used shape representations and capture finer geometry data than point clouds or volumetric grids, but are challenging to apply CNNs directly due to their non-Euclidean structure. We use parallel frames on surface…

计算机视觉与模式识别 · 计算机科学 2020-06-15 Yuqi Yang , Shilin Liu , Hao Pan , Yang Liu , Xin Tong