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CMOS Pixel Sensors tend to become relevant for a growing spectrum of charged particle detection instruments. This comes mainly from their high granularity and low material budget. However, several potential applications require a higher…

In recent years, the multiple-stage strategy has become a popular trend for visual tracking. This strategy first utilizes a base tracker to coarsely locate the target and then exploits a refinement module to obtain more accurate results.…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Bin Yan , Dong Wang , Huchuan Lu , Xiaoyun Yang

Using the simulation framework of the SiD detector to study the Higgs -> mumu decay channel showed a considerable gain in signal significance could be achieved through an increase in charged particle momentum resolution. However more…

Instrumentation and Detectors · Physics 2011-04-26 T. G. White

High-Energy Physics experiments are facing a multi-fold data increase with every new iteration. This is certainly the case for the upcoming High-Luminosity LHC upgrade. Such increased data processing requirements forces revisions to almost…

The best RGBD trackers provide high accuracy but are slow to run. On the other hand, the best RGB trackers are fast but clearly inferior on the RGBD datasets. In this work, we propose a deep depth-aware long-term tracker that achieves…

Computer Vision and Pattern Recognition · Computer Science 2019-12-03 Yanlin Qian , Alan Lukežič , Matej Kristan , Joni-Kristian Kämäräinen , Jiri Matas

Direct detection of weakly interacting massive particles (WIMPs) can provide strong evidence of their existence and the directional method would have an advantage over other methods to detect the clear signal of WIMPs. Time projection…

Latent diffusion models (LDMs) have made significant advancements in the field of image generation in recent years. One major advantage of LDMs is their ability to operate in a compressed latent space, allowing for more efficient training…

Computer Vision and Pattern Recognition · Computer Science 2024-09-27 Christina Zhang , Simran Motwani , Matthew Yu , Ji Hou , Felix Juefei-Xu , Sam Tsai , Peter Vajda , Zijian He , Jialiang Wang

A new generation of 3D silicon pixel detectors with a small pixel size of 50$\times$50 and 25$\times$100 $\mu$m$^{2}$ is being developed for the HL-LHC tracker upgrades. The radiation hardness of such detectors was studied in beam tests…

Instrumentation and Detectors · Physics 2017-07-05 J. Lange , S. Grinstein , M. Manna , G. Pellegrini , D. Quirion , S. Terzo , D. Vázquez Furelos

In the High-Level Trigger (HLT) of both electron-positron and hadron collision experiments, the tracking process for large-volume gaseous detectors typically consumes a latency of hundreds of milliseconds. Upgrades of existing experiments…

Instrumentation and Detectors · Physics 2026-05-18 Pengkun Jia , Zhujun Fang , Hang Zhou , Yuhe Huang , Changqing Feng , Jianbei Liu

In the future high-luminosity LHC era, high-energy physics experiments face unprecedented computational challenges for event reconstruction. Employing the LHCb vertex locator as a case study we investigate a novel approach for charged…

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…

Computer Vision and Pattern Recognition · Computer Science 2020-03-17 Xin Wang , Thomas E. Huang , Trevor Darrell , Joseph E. Gonzalez , Fisher Yu

Light dark matter in the context of dark sector theories is an attractive candidate for the dark matter thought to make up the bulk of the mass of our universe. We explore here the possibility of using a low-pressure, negative-ion, time…

Instrumentation and Methods for Astrophysics · Physics 2019-03-27 D. P. Snowden-Ifft , J. L. Harton , N. Ma , F. G. Schuckman

Video action detectors are usually trained using datasets with fully-supervised temporal annotations. Building such datasets is an expensive task. To alleviate this problem, recent methods have tried to leverage weak labeling, where videos…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Alejandro Pardo , Humam Alwassel , Fabian Caba Heilbron , Ali Thabet , Bernard Ghanem

The CMS tracker consists of two tracking systems utilizing semiconductor technology: the inner pixel and the outer strip detectors. The tracker detectors occupy the volume around the beam interaction region between 3 cm and 110 cm in radius…

Instrumentation and Detectors · Physics 2018-01-10 Viktor Veszpremi

Retrieving accurate 3D reconstructions of objects from the way they reflect light is a very challenging task in computer vision. Despite more than four decades since the definition of the Photometric Stereo problem, most of the literature…

Computer Vision and Pattern Recognition · Computer Science 2021-10-13 Fotios Logothetis , Ignas Budvytis , Roberto Mecca , Roberto Cipolla

The fast reconstruction of charged particle tracks with high efficiency and track quality is an essential part of the online data selection for the ATLAS experiment at the High-Luminosity LHC. Dedicated custom designed hardware boards and…

We present results of an R&D study for a specialized processor capable of precisely reconstructing, in pixel detectors, hundreds of charged-particle tracks from high-energy collisions at 40 MHz rate. We apply a highly parallel…

PixelCNNs are a recently proposed class of powerful generative models with tractable likelihood. Here we discuss our implementation of PixelCNNs which we make available at https://github.com/openai/pixel-cnn. Our implementation contains a…

Machine Learning · Computer Science 2017-01-24 Tim Salimans , Andrej Karpathy , Xi Chen , Diederik P. Kingma

We design a lightweight beam-searching algorithm for mobile millimeter-wave systems. We construct and maintain a set of path skeletons, i.e., potential paths between a user and the serving base station to substantially expedite the…

Signal Processing · Electrical Eng. & Systems 2019-12-30 Sara Khosravi , Hossein S. Ghadikolaei , Marina Petrova

In this paper we explore the potential improvements in neutrino event reconstruction that a 3D pixelated readout could offer over a 2D projective wire readout for liquid argon time projection chambers. We simulate and study events in two…

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