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Single-pixel imaging is an innovative imaging scheme and has received increasing attentions in recent years. It is applicable to imaging at non-visible wavelengths and imaging under low light conditions. However, single-pixel imaging has…

Optics · Physics 2017-10-11 Zibang Zhang , Xueying Wang , Guoan Zheng , Jingang Zhong

Flying Triangulation sensors enable a free-hand and motion-robust 3D data acquisition of complex shaped objects. The measurement principle is based on a multi-line light-sectioning approach and uses sophisticated algorithms for real-time…

Computer Vision and Pattern Recognition · Computer Science 2013-05-20 Florian Willomitzer , Svenja Ettl , Christian Faber , Gerd Häusler

There are several applications which require high position resolution UV imaging. For these applications we have developed and successfully tested a new version of a 2D UV single photon imaging detector based on a microgap RPC. The main…

Instrumentation and Detectors · Physics 2009-11-11 P. Fonte , T. Francke , N. Pavlopoulos , V. Peskov , I. Rodionov

State-of-the-art methods for 3D reconstruction of faces from a single image require 2D-3D pairs of ground-truth data for supervision. Such data is costly to acquire, and most datasets available in the literature are restricted to pairs for…

Computer Vision and Pattern Recognition · Computer Science 2018-12-19 Yifan Xing , Rahul Tewari , Paulo R. S. Mendonca

Depth imaging is vital for many emerging technologies with applications in augmented reality, robotics, gesture detection, and facial recognition. These applications, however, demand compact and low-power systems beyond the capabilities of…

Optics · Physics 2019-10-29 Shane Colburn , Arka Majumdar

Four dimensional scanning transmission electron microscopy (4D STEM) records the scattering of electrons in a material in great detail. The benefits offered by 4D STEM are substantial, with the wealth of data it provides facilitating for…

Instrumentation and Detectors · Physics 2021-12-09 Daen Jannis , Christoph Hofer , Chuang Gao , Xiaobin Xie , Armand Béché , Timothy J. Pennycook , Jo Verbeeck

SPAD cameras offer single photon detection sensitivity, high frame rates and zero readout noise. They are a core technology for widefield FLIM, but have further potential in ultra-fast imaging applications. However, in practice sensitivity…

Instrumentation and Detectors · Physics 2016-02-15 Istvan Gyongy , Amy Davies , Neale A. W. Dutton , Rory Duncan , Colin Rickman , Robert K. Henderson , Paul Dalgarno

We present a deep learning-based multitask framework for joint 3D human pose estimation and action recognition from RGB video sequences. Our approach proceeds along two stages. In the first, we run a real-time 2D pose detector to determine…

Computer Vision and Pattern Recognition · Computer Science 2019-07-17 Huy Hieu Pham , Houssam Salmane , Louahdi Khoudour , Alain Crouzil , Pablo Zegers , Sergio A Velastin

Monocular 3D estimation is crucial for visual perception. However, current methods fall short by relying on oversimplified assumptions, such as pinhole camera models or rectified images. These limitations severely restrict their general…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Luigi Piccinelli , Christos Sakaridis , Mattia Segu , Yung-Hsu Yang , Siyuan Li , Wim Abbeloos , Luc Van Gool

Monocular depth estimation is an especially important task in robotics and autonomous driving, where 3D structural information is essential. However, extreme lighting conditions and complex surface objects make it difficult to predict depth…

Computer Vision and Pattern Recognition · Computer Science 2021-10-27 Minhyeok Lee , Sangwon Hwang , Chaewon Park , Sangyoun Lee

Learning to estimate 3D geometry in a single frame and optical flow from consecutive frames by watching unlabeled videos via deep convolutional network has made significant progress recently. Current state-of-the-art (SoTA) methods treat…

Computer Vision and Pattern Recognition · Computer Science 2019-07-12 Chenxu Luo , Zhenheng Yang , Peng Wang , Yang Wang , Wei Xu , Ram Nevatia , Alan Yuille

In this thesis, we address the problem of estimating the 6D pose of rigid objects from a single RGB or RGB-D input image, assuming that 3D models of the objects are available. This problem is of great importance to many application fields…

Computer Vision and Pattern Recognition · Computer Science 2022-01-03 Tomas Hodan

The advent of spatiotemporal wave packets (STWPs), represented by spatiotemporal optical vortices (STOVs), has paved the way for the exploration in optics and photonics. To date, despite considerable efforts, a comprehensive and efficient…

In terms of 3D imaging speed and system cost, the single-camera system projecting single-frequency patterns is the ideal option among all proposed Fringe Projection Profilometry (FPP) systems. This system necessitates a robust spatial phase…

Image and Video Processing · Electrical Eng. & Systems 2023-03-14 Xiaolong Luo , Wanzhong Song , Songlin Bai , Yu Li , Zhihe Zhao

Digital camera pixels measure image intensities by converting incident light energy into an analog electrical current, and then digitizing it into a fixed-width binary representation. This direct measurement method, while conceptually…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Atul Ingle , Trevor Seets , Mauro Buttafava , Shantanu Gupta , Alberto Tosi , Mohit Gupta , Andreas Velten

Current multispectral imagers suffer from low photon efficiency and limited spectrum range. These limitations are partially due to the technological limitations from array sensors (CCD or CMOS), and also caused by separative measurement of…

Optics · Physics 2016-04-25 Liheng Bian , Jinli Suo , Guohai Situ , Ziwei Li , Feng Chen , Qionghai Dai

Single-view depth estimation refers to the ability to derive three-dimensional information per pixel from a single two-dimensional image. Single-view depth estimation is an ill-posed problem because there are multiple depth solutions that…

Computer Vision and Pattern Recognition · Computer Science 2024-06-21 Javier Rodriguez-Puigvert

In this paper, we introduce a novel single shot approach for 6D object pose estimation of rigid objects based on depth images. For this purpose, a fully convolutional neural network is employed, where the 3D input data is spatially…

Computer Vision and Pattern Recognition · Computer Science 2020-04-28 Kilian Kleeberger , Marco F. Huber

Ultrafast electron diffraction and phonon-diffuse scattering (UED(S)) experiments make use of photo-induced changes to electron scattering intensity across 2D detectors to report on a very wide range of dynamic structural phenomena in…

Instrumentation and Detectors · Physics 2026-04-20 Laurenz Kremeyer , David Cai , Malik Lahlou , Sebastian Hammer , Raphael Schwenzer , Bradley J. Siwick

Single Photon Avalanche Diodes (SPADs) represent a cutting-edge imaging technology, capable of detecting individual photons with remarkable timing precision. Building on this sensitivity, Single Photon Cameras (SPCs) enable image capture at…

Image and Video Processing · Electrical Eng. & Systems 2025-06-10 Sumit Sharma , Gopi Raju Matta , Kaushik Mitra