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A time-of-flight (ToF) imaging system is proposed and its working principle demonstrated. To realize this system, a new device, a free-space optical mixer, is designed and fabricated. A scene is illuminated (flashed) with a megahertz level…

Time-of-flight (ToF) cameras calculate depth maps by reconstructing phase shifts of amplitude-modulated signals. For broad illumination or transparent objects, reflections from multiple scene points can illuminate a given pixel, giving rise…

Computer Vision and Pattern Recognition · Computer Science 2014-06-20 Ayush Bhandari , Achuta Kadambi , Refael Whyte , Christopher Barsi , Micha Feigin , Adrian Dorrington , Ramesh Raskar

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

Time-of-flight (TOF) cameras are sensors that can measure the depths of scene-points, by illuminating the scene with a controlled laser or LED source, and then analyzing the reflected light. In this paper, we will first describe the…

Computer Vision and Pattern Recognition · Computer Science 2020-12-15 Radu Horaud , Miles Hansard , Georgios Evangelidis , Clement Menier

Time of flight cameras may emerge as the 3-D sensor of choice. Today, time of flight sensors use phase-based sampling, where the phase delay between emitted and received, high-frequency signals encodes distance. In this paper, we present a…

Computer Vision and Pattern Recognition · Computer Science 2015-03-11 Achuta Kadambi , Vage Taamazyan , Suren Jayasuriya , Ramesh Raskar

Neural networks can represent and accurately reconstruct radiance fields for static 3D scenes (e.g., NeRF). Several works extend these to dynamic scenes captured with monocular video, with promising performance. However, the monocular…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Benjamin Attal , Eliot Laidlaw , Aaron Gokaslan , Changil Kim , Christian Richardt , James Tompkin , Matthew O'Toole

Long-distance depth imaging holds great promise for applications such as autonomous driving and robotics. Direct time-of-flight (dToF) imaging offers high-precision, long-distance depth sensing, yet demands ultra-short pulse light sources…

Computer Vision and Pattern Recognition · Computer Science 2025-05-29 Manchao Bao , Shengjiang Fang , Tao Yue , Xuemei Hu

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

Indirect Time-of-Flight (iToF) cameras are a promising depth sensing technology. However, they are prone to errors caused by multi-path interference (MPI) and low signal-to-noise ratio (SNR). Traditional methods, after denoising, mitigate…

Computer Vision and Pattern Recognition · Computer Science 2021-12-22 Felipe Gutierrez-Barragan , Huaijin Chen , Mohit Gupta , Andreas Velten , Jinwei Gu

A variety of techniques such as light field, structured illumination, and time-of-flight (TOF) are commonly used for depth acquisition in consumer imaging, robotics and many other applications. Unfortunately, each technique suffers from its…

Computer Vision and Pattern Recognition · Computer Science 2015-09-03 Suren Jayasuriya , Adithya Pediredla , Sriram Sivaramakrishnan , Alyosha Molnar , Ashok Veeraraghavan

Time-of-Flight (ToF) cameras require active illumination to obtain depth information thus the power of illumination directly affects the performance of ToF cameras. Traditional ToF imaging algorithms is very sensitive to illumination and…

Computer Vision and Pattern Recognition · Computer Science 2018-12-20 Yan Chen , Jimmy Ren , Xuanye Cheng , Keyuan Qian , Jinwei Gu

Depth cameras are emerging as a cornerstone modality with diverse applications that directly or indirectly rely on measured depth, including personal devices, robotics, and self-driving vehicles. Although time-of-flight (ToF) methods have…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Seung-Hwan Baek , Noah Walsh , Ilya Chugunov , Zheng Shi , Felix Heide

Time-of-flight (ToF) sensors provide an imaging modality fueling diverse applications, including LiDAR in autonomous driving, robotics, and augmented reality. Conventional ToF imaging methods estimate the depth by sending pulses of light…

Computer Vision and Pattern Recognition · Computer Science 2021-12-20 Seung-Hwan Baek , Felix Heide

We present a method to reconstruct dynamic scenes from monocular continuous-wave time-of-flight (C-ToF) cameras using raw sensor samples that achieves similar or better accuracy than neural volumetric approaches and is 100x faster. Quickly…

Range images captured by Time-of-Flight (ToF) cameras are corrupted with multipath distortions due to interaction between modulated light signals and scenes. The interaction is often complicated, which makes a model-based solution elusive.…

Computer Vision and Pattern Recognition · Computer Science 2016-02-24 Kilho Son , Ming-Yu Liu , Yuichi Taguchi

Recently, it is increasingly popular to equip mobile RGB cameras with Time-of-Flight (ToF) sensors for active depth sensing. However, for off-the-shelf ToF sensors, one must tackle two problems in order to obtain high-quality depth with…

Computer Vision and Pattern Recognition · Computer Science 2019-09-18 Di Qiu , Jiahao Pang , Wenxiu Sun , Chengxi Yang

Indirect Time-of-Flight (I-ToF) imaging is a widespread way of depth estimation for mobile devices due to its small size and affordable price. Previous works have mainly focused on quality improvement for I-ToF imaging especially curing the…

Computer Vision and Pattern Recognition · Computer Science 2022-06-17 HyunJun Jung , Nikolas Brasch , Ales Leonardis , Nassir Navab , Benjamin Busam

We introduce Mask-ToF, a method to reduce flying pixels (FP) in time-of-flight (ToF) depth captures. FPs are pervasive artifacts which occur around depth edges, where light paths from both an object and its background are integrated over…

Image and Video Processing · Electrical Eng. & Systems 2021-04-01 Ilya Chugunov , Seung-Hwan Baek , Qiang Fu , Wolfgang Heidrich , Felix Heide

Time-of-flight (TOF) cameras are based on a new technology that delivers distance maps by the use of a modulated light source. In this paper we first describe a set of experiments that we performed with TOF cameras. We then propose a noise…

Data Analysis, Statistics and Probability · Physics 2007-05-23 Dragos Falie , Vasile Buzuloiu

Time-of-flight (ToF) 3D imaging has a wealth of applications, from industrial inspection to movement tracking and gesture recognition. Depth information is recovered by measuring the round-trip flight time of laser pulses, which usually…

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