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Non-line-of-sight (NLOS) imaging relies on collecting light that is rendered incoherent from the multiple scattering events and is then post-processed to provide an estimate of the hidden scene. Here we employ coherent phase control of the…

光学 · 物理学 2019-12-25 Ilya Starshynov , Omair Ghafur , James Fitches , Daniele Faccio

We introduce Omni-LOS, a neural computational imaging method for conducting holistic shape reconstruction (HSR) of complex objects utilizing a Single-Photon Avalanche Diode (SPAD)-based time-of-flight sensor. As illustrated in Fig. 1, our…

计算机视觉与模式识别 · 计算机科学 2023-04-24 Binbin Huang , Xingyue Peng , Siyuan Shen , Suan Xia , Ruiqian Li , Yanhua Yu , Yuehan Wang , Shenghua Gao , Wenzheng Chen , Shiying Li , Jingyi Yu

Non-line-of-sight (NLOS) imaging methods are capable of reconstructing complex scenes that are not visible to an observer using indirect illumination. However, they assume only third-bounce illumination, so they are currently limited to…

计算机视觉与模式识别 · 计算机科学 2023-07-27 Diego Royo , Talha Sultan , Adolfo Muñoz , Khadijeh Masumnia-Bisheh , Eric Brandt , Diego Gutierrez , Andreas Velten , Julio Marco

LiDARs are being increasingly deployed for consumer imaging in handheld, wearable, and robotic applications. These sensors can capture the time-of-flight of light at picosecond resolution, which in principle, enables them to capture…

计算机视觉与模式识别 · 计算机科学 2026-05-19 Siddharth Somasundaram , Aaron Young , Akshat Dave , Adithya Pediredla , Ramesh Raskar

Non-line-of-sight (NLOS) imaging seeks to reconstruct hidden objects by analyzing reflections from intermediary surfaces. Existing methods typically model both the measurement data and the hidden scene in three dimensions, overlooking the…

计算机视觉与模式识别 · 计算机科学 2025-08-05 Yijun Wei , Jianyu Wang , Leping Xiao , Zuoqiang Shi , Xing Fu , Lingyun Qiu

Time-of-Flight non-line-of-sight (ToF NLOS) imaging techniques provide state-of-the-art reconstructions of scenes hidden around corners by inverting the optical path of indirect photons scattered by visible surfaces and measured by…

计算机视觉与模式识别 · 计算机科学 2026-03-11 Julio Marco , Adrian Jarabo , Ji Hyun Nam , Alberto Tosi , Diego Gutierrez , Andreas Velten

The ability to know what is hidden around a corner or behind a wall provides a crucial advantage when physically going around the obstacle is impossible or dangerous. Previous solutions to this challenge were constrained e.g. by their…

Imaging with optical resolution through and inside complex samples is a difficult challenge with important applications in many fields. The fundamental problem is that inhomogeneous samples, such as biological tissues, randomly scatter and…

光学 · 物理学 2014-10-17 Ori Katz , Pierre Heidmann , Mathias Fink , Sylvain Gigan

Conventional sensor systems record information about directly visible objects, whereas occluded scene components are considered lost in the measurement process. Non-line-of-sight (NLOS) methods try to recover such hidden objects from their…

Computational approach to imaging around the corner, or non-line-of-sight (NLOS) imaging, is becoming a reality thanks to major advances in imaging hardware and reconstruction algorithms. A recent development towards practical NLOS imaging,…

图像与视频处理 · 电气工程与系统科学 2022-08-09 Fangzhou Mu , Sicheng Mo , Jiayong Peng , Xiaochun Liu , Ji Hyun Nam , Siddeshwar Raghavan , Andreas Velten , Yin Li

A deep learning based non-line-of-sight (NLOS) imaging system is developed to image an occluded object off a scattering surface. The neural net is trained using only handwritten digits, and yet exhibits capability to reconstruct patterns…

图像与视频处理 · 电气工程与系统科学 2020-05-05 Chen Zhou , Cheng-Yu Wang , Zhiwen Liu

Conventional imaging only records photons directly sent from the object to the detector, while non-line-of-sight (NLOS) imaging takes the indirect light into account. Most NLOS solutions employ a transient scanning process, followed by a…

计算机视觉与模式识别 · 计算机科学 2021-03-29 Dayu Zhu , Wenshan Cai

We consider the non-line-of-sight (NLOS) imaging of an object using the light reflected off a diffusive wall. The wall scatters incident light such that a lens is no longer useful to form an image. Instead, we exploit the 4D spatial…

计算机视觉与模式识别 · 计算机科学 2022-12-06 Andre Beckus , Alexandru Tamasan , George K. Atia

Non-line-of-sight (NLOS) imaging of objects not visible to either the camera or illumination source is a challenging task with vital applications including surveillance and robotics. Recent NLOS reconstruction advances have been achieved…

图像与视频处理 · 电气工程与系统科学 2019-07-30 Sreenithy Chandran , Suren Jayasuriya

We describe a method for 3D human pose estimation from transient images (i.e., a 3D spatio-temporal histogram of photons) acquired by an optical non-line-of-sight (NLOS) imaging system. Our method can perceive 3D human pose by `looking…

计算机视觉与模式识别 · 计算机科学 2020-04-02 Mariko Isogawa , Ye Yuan , Matthew O'Toole , Kris Kitani

Recent works have demonstrated non-line of sight (NLOS) reconstruction by using the time-resolved signal frommultiply scattered light. These works combine ultrafast imaging systems with computation, which back-projects the recorded…

计算机视觉与模式识别 · 计算机科学 2017-06-21 Victor Arellano , Diego Gutierrez , Adrian Jarabo

Detecting object with low reflectivity embedded within a noisy background is a challenging task. Quantum correlations between pairs of quantum states of light, though are highly sensitive to background noise and losses, offer advantages…

量子物理 · 物理学 2023-09-19 K. Muhammed Shafi , A. Padhye , C. M. Chandrashekar

Non-line-of-sight (NLOS) imaging with intelligent sensors emerges as a novel technique in imaging and sensing occluded objects around corners. With the innovation of bio-inspired neuromorphic sensors, the applications of novel sensors in…

光学 · 物理学 2024-11-15 Conghe Wang , Xia Wang , Yujie Fang , Changda Yan , Xin Zhang , Yifan Zuo

Non-line-of-sight (NLOS) imaging aims to reconstruct the three-dimensional hidden scenes from the data measured in the line-of-sight, which uses photon time-of-flight information encoded in light after multiple diffuse reflections. The…

计算机视觉与模式识别 · 计算机科学 2024-03-07 Rui Ding , Juntian Ye , Qifeng Gao , Feihu Xu , Yuping Duan

Traditional imaging systems, such as the eye or cameras, image scenes that lie in the direct line-of-sight (LoS). Most objects are opaque in the optical and infrared regimes and can limit dramatically the field of view (FoV). Current…

光学 · 物理学 2022-05-11 Yiran Cui , Georgios C. Trichopoulos