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Recovering the shape and appearance of real-world objects from natural 2D images is a long-standing and challenging inverse rendering problem. In this paper, we introduce a novel hybrid differentiable rendering method to efficiently…

计算机视觉与模式识别 · 计算机科学 2023-08-22 Xiangyang Zhu , Yiling Pan , Bailin Deng , Bin Wang

Interrupted X-ray computed tomography (X-CT) has been the common way to observe the deformation of materials during an experiment. While this approach is effective for quasi-static experiments, it has never been possible to reconstruct a…

仪器与探测器 · 物理学 2024-10-29 Ivan Grega , William F. Whitney , Vikram S. Deshpande

Models for finite-rate-chemistry in underresolved flows still pose one of the main challenges for predictive simulations of complex configurations. The problem gets even more challenging if turbulence is involved. This work advances the…

流体动力学 · 物理学 2022-10-31 Mathis Bode , Michael Gauding , Dominik Goeb , Tobias Falkenstein , Heinz Pitsch

We present a novel method for characterizing the microstructure of a material from volumetric datasets such as 3D image data from computed tomography (CT). The method is based on a new statistical model for the distribution of voxel…

材料科学 · 物理学 2021-01-06 Elise Otterlei Brenne , Vedrana Andersen Dahl , Peter Stanley Jørgensen

The Speckle Imager via MUlti Layer Atmospheric Turbulence Object Reconstructor (SIMULATOR) is a lab-based testbed instrument developed to test for speckle correlation-based techniques in the optical regime. However, this instrument can be…

天体物理仪器与方法 · 物理学 2022-08-11 Sorabh Chhabra , Abhay A. Kohok , Bhushan S. Joshi , A. N. Ramprakash , Chaitanya V. Rajarshi , Rani S. Bhandare

At present, face 3D reconstruction has broad application prospects in various fields, but the research on it is still in the development stage. In this paper, we hope to achieve better face 3D reconstruction quality by combining multi-view…

计算机视觉与模式识别 · 计算机科学 2023-09-26 Wenzhuo Zheng , Junhao Zhao , Xiaohong Liu , Yongyang Pan , Zhenghao Gan , Haozhe Han , Ning Liu

Photorealistic rendering of dynamic humans is an important ability for telepresence systems, virtual shopping, synthetic data generation, and more. Recently, neural rendering methods, which combine techniques from computer graphics and…

计算机视觉与模式识别 · 计算机科学 2020-12-21 Ziyan Wang , Timur Bagautdinov , Stephen Lombardi , Tomas Simon , Jason Saragih , Jessica Hodgins , Michael Zollhöfer

Reconstruction based on the stereo camera has received considerable attention recently, but two particular challenges still remain. The first concerns the need to aggregate similar pixels in an effective approach, and the second is to…

计算机视觉与模式识别 · 计算机科学 2017-03-31 Lei Fan , Ziyu Pan , Long Chen , Kai Huang

Neural networks can represent and accurately reconstruct radiance fields for static 3D scenes (e.g., NeRF). Several works extend these to dynamic scenes captured with monocular video, with promising performance. However, the monocular…

计算机视觉与模式识别 · 计算机科学 2021-12-07 Benjamin Attal , Eliot Laidlaw , Aaron Gokaslan , Changil Kim , Christian Richardt , James Tompkin , Matthew O'Toole

Large scale text-guided diffusion models have garnered significant attention due to their ability to synthesize diverse images that convey complex visual concepts. This generative power has more recently been leveraged to perform text-to-3D…

计算机视觉与模式识别 · 计算机科学 2023-09-20 Etai Sella , Gal Fiebelman , Peter Hedman , Hadar Averbuch-Elor

Thermal scene reconstruction holds great potential for various applications, such as analyzing building energy consumption and performing non-destructive infrastructure testing. However, existing methods typically require dense scene…

计算机视觉与模式识别 · 计算机科学 2024-12-02 Mariam Hassan , Florent Forest , Olga Fink , Malcolm Mielle

Voxels are a geometric representation used for rendering volumes, multi-resolution models, and indirect lighting effects. Since the memory consumption of uncompressed voxel volumes scales cubically with resolution, past works have…

图形学 · 计算机科学 2024-10-21 Russel Arbore , Jeffrey Liu , Aidan Wefel , Steven Gao , Eric Shaffer

When created faithfully from real-world data, Digital 3D representations of objects can be useful for human or computer-assisted analysis. Such models can also serve for generating training data for machine learning approaches in settings…

计算机视觉与模式识别 · 计算机科学 2024-07-08 David Nakath , Xiangyu Weng , Mengkun She , Kevin Köser

X-ray imaging is indispensable in medical diagnostics, yet its use is tightly regulated due to potential health risks. To mitigate radiation exposure, recent research focuses on generating novel views from sparse inputs and reconstructing…

计算机视觉与模式识别 · 计算机科学 2025-03-12 Feiran Wang , Jiachen Tao , Junyi Wu , Haoxuan Wang , Bin Duan , Kai Wang , Zongxin Yang , Yan Yan

We propose a method to efficiently compute tomographic projections of a 3D volume represented by a linear combination of shifted B-splines. To do so, we propose a ray-tracing algorithm that computes 3D line integrals with arbitrary…

计算机视觉与模式识别 · 计算机科学 2025-11-17 Youssef Haouchat , Sepand Kashani , Aleix Boquet-Pujadas , Philippe Thévenaz , Michael Unser

A major challenge in single particle reconstruction methods using cryo-electron microscopy is to attain a resolution sufficient to interpret fine details in three-dimensional (3D) macromolecular structures. Obtaining high resolution 3D…

数值分析 · 数学 2013-07-23 Lanhui Wang , Yoel Shkolnisky , Amit Singer

Event cameras or neuromorphic cameras mimic the human perception system as they measure the per-pixel intensity change rather than the actual intensity level. In contrast to traditional cameras, such cameras capture new information about…

计算机视觉与模式识别 · 计算机科学 2016-08-05 Christian Reinbacher , Gottfried Graber , Thomas Pock

A purely data-driven approach using deep convolutional neural networks is discussed in the context of Large Eddy Simulation (LES) of turbulent premixed flames. The assessment of the method is conducted a priori using direct numerical…

流体动力学 · 物理学 2018-10-22 Zacharias M. Nikolaou , Charalambos Chrysostomou , Luc Vervisch , Stewart Cant

3D object recognition accuracy can be improved by learning the multi-scale spatial features from 3D spatial geometric representations of objects such as point clouds, 3D models, surfaces, and RGB-D data. Current deep learning approaches…

计算机视觉与模式识别 · 计算机科学 2019-05-07 Sambit Ghadai , Xian Lee , Aditya Balu , Soumik Sarkar , Adarsh Krishnamurthy

Neural Radiance Fields (NeRF) enable 3D scene reconstruction from 2D images and camera poses for Novel View Synthesis (NVS). Although NeRF can produce photorealistic results, it often suffers from overfitting to training views, leading to…

计算机视觉与模式识别 · 计算机科学 2023-11-07 Fusang Wang , Arnaud Louys , Nathan Piasco , Moussab Bennehar , Luis Roldão , Dzmitry Tsishkou