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In this paper, we present a new algorithm for fast, online 3D reconstruction of dynamic scenes using times of arrival of photons recorded by single-photon detector arrays. One of the main challenges in 3D imaging using single-photon lidar…

We introduce algorithms to visualize feature spaces used by object detectors. Our method works by inverting a visual feature back to multiple natural images. We found that these visualizations allow us to analyze object detection systems in…

计算机视觉与模式识别 · 计算机科学 2015-02-20 Carl Vondrick , Aditya Khosla , Hamed Pirsiavash , Tomasz Malisiewicz , Antonio Torralba

Poisson Surface Reconstruction is a widely-used algorithm for reconstructing a surface from an oriented point cloud. To facilitate applications where only partial surface information is available, or scanning is performed sequentially, a…

图形学 · 计算机科学 2025-06-06 Sidhanth Holalkere , David S. Bindel , Silvia Sellán , Alexander Terenin

In order to fully exploit the physics potential of a future high energy e+e- linear collider, a Vertex Tracker, providing high resolution track reconstruction, is required. Hybrid Silicon pixel sensors are an attractive option, for the…

Mixture models are well-established learning approaches that, in computer vision, have mostly been applied to inverse or ill-defined problems. However, they are general-purpose divide-and-conquer techniques, splitting the input space into…

计算机视觉与模式识别 · 计算机科学 2020-04-21 Ali Varamesh , Tinne Tuytelaars

Although accurate, two-stage face detectors usually require more inference time than single-stage detectors do. This paper proposes a simple yet effective single-stage model for real-time face detection with a prominently high accuracy. We…

计算机视觉与模式识别 · 计算机科学 2019-02-06 Nguyen Van Quang , Hiromasa Fujihara

Single-photon sensitive detectors like Silicon Photomultipliers are widely used in many medical imaging applications. By using detectors with position resolutions, it is possible to build compact photodetector readouts with reduced number…

In this paper we describe a new method for detecting and counting a repeating object in an image. While the method relies on a fairly sophisticated deformable part model, unlike existing techniques it estimates the model parameters in an…

计算机视觉与模式识别 · 计算机科学 2019-04-16 Inbar Huberman , Raanan Fattal

We investigate the recovery of structures from large-area, low dose exposures that distribute the dose over many identical copies of an object. The reconstruction is done via a maximum likelihood approach that does neither require to…

材料科学 · 物理学 2018-03-28 C. Kramberger , J. C. Meyer

This paper addresses the classical problem of one-bit compressed sensing using a deep learning-based reconstruction algorithm that leverages a trained generative model to enhance the signal reconstruction performance. The generator, a…

机器学习 · 计算机科学 2025-02-19 Swatantra Kafle , Geethu Joseph , Pramod K. Varshney

In this paper, we propose a novel method for joint recovery of camera pose, object geometry and spatially-varying Bidirectional Reflectance Distribution Function (svBRDF) of 3D scenes that exceed object-scale and hence cannot be captured…

计算机视觉与模式识别 · 计算机科学 2023-06-07 Carolin Schmitt , Božidar Antić , Andrei Neculai , Joo Ho Lee , Andreas Geiger

The CDF experiment's Silicon Vertex Trigger is a system of 150 custom 9U VME boards that reconstructs axial tracks in the CDF silicon strip detector in a 15 microsecond pipeline. SVT's 35 micron impact parameter resolution enables CDF's…

仪器与探测器 · 物理学 2012-08-27 CDF Collaboration

We propose a novel method to reconstruct the 3D shapes of transparent objects using hand-held captured images under natural light conditions. It combines the advantage of explicit mesh and multi-layer perceptron (MLP) network, a hybrid…

计算机视觉与模式识别 · 计算机科学 2023-03-30 Jiamin Xu , Zihan Zhu , Hujun Bao , Weiwei Xu

3D scene reconstruction from a single measurement is challenging, especially in the presence of occluded regions and specular materials, such as mirrors. We address these challenges by leveraging single-photon lidars. These lidars estimate…

计算机视觉与模式识别 · 计算机科学 2025-12-09 Tzofi Klinghoffer , Siddharth Somasundaram , Xiaoyu Xiang , Yuchen Fan , Christian Richardt , Akshat Dave , Ramesh Raskar , Rakesh Ranjan

The ATLAS Pixel Detector is the innermost layer of the ATLAS tracking system and will contribute significantly to the ATLAS track and vertex reconstruction. The detector consists of identical sensor-chip-hybrid modules, arranged in three…

仪器与探测器 · 物理学 2014-11-18 J. Grosse-Knetter

The two-dimensional interpolating readout concept of the Virtual-Pixel detector (ViP detector) goes along with an enormous reduction of electronic channels compared to pure pixel devices. However, the special concept of the readout…

仪器与探测器 · 物理学 2009-06-19 H. Wagner , A. Orthen , H. J. Besch , S. Martoiu , R. H. Menk , A. H. Walenta , U. Werthenbach

Current and next-generation particle tracking detectors will incorporate precision timing capabilities with resolutions approaching tens of picoseconds. Using Technology Computer-Aided Design (TCAD) simulations of Low-Gain Avalanche Diode…

Graph embeddings have emerged as a powerful tool for representing complex network structures in a low-dimensional space, enabling the use of efficient methods that employ the metric structure in the embedding space as a proxy for the…

社会与信息网络 · 计算机科学 2024-04-18 Radosław Nowak , Adam Małkowski , Daniel Cieślak , Piotr Sokół , Paweł Wawrzyński

Detecting rare objects from a few examples is an emerging problem. Prior works show meta-learning is a promising approach. But, fine-tuning techniques have drawn scant attention. We find that fine-tuning only the last layer of existing…

计算机视觉与模式识别 · 计算机科学 2020-03-17 Xin Wang , Thomas E. Huang , Trevor Darrell , Joseph E. Gonzalez , Fisher Yu

The increasing popularity of facial manipulation (Deepfakes) and synthetic face creation raises the need to develop robust forgery detection solutions. Crucially, most work in this domain assume that the Deepfakes in the test set come from…

计算机视觉与模式识别 · 计算机科学 2022-10-12 Amir Jevnisek , Shai Avidan