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This paper proposes a novel multipath interference (MPI) suppression algorithm based on Bayesian-optimized extreme gradient boosting (XGBoost) ensemble to reduce MPI error in amplitude-modulated continuous wave (AMCW) scanning light…

Image and Video Processing · Electrical Eng. & Systems 2023-04-26 Sunghyun Lee , Yoonseop Lim , Wookhyeon Kwon , Yonghwa Park

Time-of-Flight (ToF) depth sensing camera is able to obtain depth maps at a high frame rate. However, its low resolution and sensitivity to the noise are always a concern. A popular solution is upsampling the obtained noisy low resolution…

Computer Vision and Pattern Recognition · Computer Science 2015-06-18 Wei Liu , Yijun Li , Xiaogang Chen , Jie Yang , Qiang Wu , Jingyi Yu

Time-of-flight (ToF) devices have greatly propelled the advancement of various multi-modal perception applications. However, achieving accurate rendering of time-resolved information remains a challenge, particularly in scenes involving…

Graphics · Computer Science 2024-06-17 Qianyue He , Dongyu Du , Haitian Jiang , Xin Jin

Developing and integrating advanced image sensors with novel algorithms in camera systems is prevalent with the increasing demand for computational photography and imaging on mobile platforms. However, the lack of high-quality data for…

Computer Vision and Pattern Recognition · Computer Science 2022-09-16 Wenxiu Sun , Qingpeng Zhu , Chongyi Li , Ruicheng Feng , Shangchen Zhou , Jun Jiang , Qingyu Yang , Chen Change Loy , Jinwei Gu

Spatially and temporally highly resolved depth information enables numerous applications including human-machine interaction in gaming or safety functions in the automotive industry. In this paper, we address this issue using Time-of-flight…

Numerical Analysis · Mathematics 2018-12-27 Stephan Antholzer , Christoph Wolf , Michael Sandbichler , Markus Dielacher , Markus Haltmeier

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…

Computer Vision and Pattern Recognition · Computer Science 2026-03-11 Julio Marco , Adrian Jarabo , Ji Hyun Nam , Alberto Tosi , Diego Gutierrez , Andreas Velten

Time-Of-Flight (TOF) is a noble technique that is used in Positron Emission Tomography (PET) imaging worldwide. The scintillator based imaging system that is being used around the world for TOF-PET is very expensive. Multi-gap Resistive…

Instrumentation and Detectors · Physics 2018-07-02 Rajesh Ganai , Shaifali Mehta , Mehulkumar Shiroya , Mitali Mondal , Zubayer Ahammed , Subhasis Chattopadhyay

Time-of-Flight (ToF) cameras are subject to high levels of noise and distortions due to Multi-Path-Interference (MPI). While recent research showed that 2D neural networks are able to outperform previous traditional State-of-the-Art (SOTA)…

Computer Vision and Pattern Recognition · Computer Science 2022-04-21 Michael Schelling , Pedro Hermosilla , Timo Ropinski

Integrating an RGB camera into a ToF imaging system has become a significant technique for perceiving the real world. The RGB guided ToF imaging system is crucial to several applications, including face anti-spoofing, saliency detection,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-20 Xin Qiao , Matteo Poggi , Pengchao Deng , Hao Wei , Chenyang Ge , Stefano Mattoccia

The combination of range sensors with color cameras can be very useful for robot navigation, semantic perception, manipulation, and telepresence. Several methods of combining range- and color-data have been investigated and successfully…

Computer Vision and Pattern Recognition · Computer Science 2021-08-02 Vineet Gandhi , Jan Cech , Radu Horaud

We propose a novel approach to recovering the translucent objects from a single time-of-flight (ToF) depth camera using deep residual networks. When recording the translucent objects using the ToF depth camera, their depth values are…

Computer Vision and Pattern Recognition · Computer Science 2018-10-01 Seongjong Song , Hyunjung Shim

Multiphoton interference is an important phenomenon in modern quantum mechanics and experimental quantum optics, and it is fundamental for the development of quantum information science and technologies. Over the last three decades, several…

Quantum Physics · Physics 2021-10-20 Heonoh Kim , Osung Kwon , Han Seb Moon

We experimentally measure the monochromatic transmission matrix (TM) of an optical multiple scattering medium using a spatial light modulator together with a phase-shifting interferometry measurement method. The TM contains all information…

Optics · Physics 2015-05-28 S. M. Popoff , G. Lerosey , M. Fink , A. C. Boccara , S. Gigan

We present a novel spatio-temporal reuse framework for time-resolved light transport, enabling efficient Monte Carlo rendering of time-of-flight (ToF) phenomena such as time-gated imaging and transient light capture. Existing ToF rendering…

Graphics · Computer Science 2026-05-13 Juhyeon Kim , Wojciech Jarosz , Adithya Pediredla

We introduce an interferometric technique for passive time-of-flight imaging and depth sensing at micrometer axial resolutions. Our technique uses a full-field Michelson interferometer, modified to use sunlight as the only light source. The…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Alankar Kotwal , Anat Levin , Ioannis Gkioulekas

3D Time-of-Flight camera's images are affected by errors due to the diffuse (indirect) light and to the flare light. The presented method improves the 3D image reducing the distance's errors to dark surface objects. This is achieved by…

Computer Vision and Pattern Recognition · Computer Science 2009-10-01 D. Falie

Trapped matter-wave interferometers (TMIs) present a platform for precision sensing within a compact apparatus, extending coherence time by repeated traversal of a confining potential. However, imperfections in this potential can introduce…

Atomic Physics · Physics 2020-01-08 Adam D. West

Time of Flight (ToF) is a prevalent depth sensing technology in the fields of robotics, medical imaging, and non-destructive testing. Yet, ToF sensing faces challenges from complex ambient conditions making an inverse modelling from the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Christopher Hahne , Michel Hayoz , Raphael Sznitman

In recent years, computational Time-of-Flight (ToF) imaging has emerged as an exciting and a novel imaging modality that offers new and powerful interpretations of natural scenes, with applications extending to 3D, light-in-flight, and…

Image and Video Processing · Electrical Eng. & Systems 2024-11-05 Ruiming Guo , Ayush Bhandari

With the rapid development of stereoscopic display technologies, especially glasses-free 3D screens, and virtual reality devices, stereoscopic conversion has become an important task to address the lack of high-quality stereoscopic image…

Computer Vision and Pattern Recognition · Computer Science 2024-12-05 Shanding Diao , Yang Zhao , Yuan Chen , Zhao Zhang , Wei Jia , Ronggang Wang