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3d image acquisition and display: technology, perception and applications, 3d, COSI, dH, FLatOptics, IS, pcAOP 2023 - Part of Imaging and Applied Optics Congress 2023

作者： Omika, S. Ueno, S. Kume, N. Nakai, Y. Okazaki, K. Sumita, A. Miyadera, H. Sumitani, M. Miyahara, Y. Takagi, J. Toshiba Energy Systems & Solutions Corporation 72-34 Horikawa-cho Saiwai-ku Kanagawa Kawasaki Japan International Research Institute for Nuclear Decommissioning 3 Toyokaiji Building2-23-1 Nishi-Shinbashi Minato-ku Tokyo Japan

ISBN: (纸本)9781957171289

An alpha emission detector was developed to monitor alpha contamination in the buildings of Fukushima daiichi Nuclear Power Station during the decommissioning processes. To confirm usable conditions of the α-ray detection system under the high dose environments, Monte Carlo simulations were carried out to evaluate the amount of photons emitted by the α-ray. The results agreed within a factor of 2 from the measured values. © 2023 The Author (s).

关键词： Monte Carlo methods

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Liquid-Crystalline Lens Array-Based 3d/2d Switchable Augmented Reality display System Using One-Shot Learning Model

Liquid-Crystalline Lens Array-Based 3D/2D Switchable Augment...

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3d image acquisition and display: technology, perception and applications, 3d, COSI, dH, FLatOptics, IS, pcAOP 2023 - Part of Imaging and Applied Optics Congress 2023

作者： Erdenebat, Munkh-Uchral Khuderchuluun, Anar darkhanbaatar, Nyamsuren Nam, Oh-Seung Kim, Joon Hyun Imtiaz, Shariar Md. Kwon, Ki-Chul Gil, Sang-Keun Kim, Hak-Rin Kim, Nam School of Information and Communication Engineering Chungbuk National University 1 Chungdae-ro Seowon-gu. Cheongju Chungbuk28644 Korea Republic of Department of Electronics Engineering Suwon University 17 Wauan-gil Bongdam-eup Gyeonggi Hwaseong18323 Korea Republic of School of Electronics Engineering Kyungpook National University 80 Daehak-ro Buk-gu Daegu41566 Korea Republic of

ISBN: (纸本)9781957171289

An advanced three-dimensional/two-dimensional switchable augmented-reality system is proposed. A camera captures the images of real objects, and it is displayed as it is or the elemental image array generated from a captured image and estimated depth information via a one-shot learning model, is reconstructed by a liquid-crystalline lens array. © 2023 The Author (s).

关键词： Augmented reality

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Evaluation of images Obtained by Parallel Two-step Phase-shifting digital Holography without Recording of Reference Wave

Evaluation of Images Obtained by Parallel Two-step Phase-shi...

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3d image acquisition and display: technology, perception and applications, 3d, COSI, dH, FLatOptics, IS, pcAOP 2023 - Part of Imaging and Applied Optics Congress 2023

作者： Todo, Ryuju Inoue, Tomoyoshi Hashimoto, Sota Yamaguchi, Ryuki Notte, Shun Nishio, Kenzo Rajput, Sudheesh K. Matoba, Osamu Awatsuji, Yasuhiro Kyoto Institute of Technology Matsugasaki Sakyo-ku Kyoto606-8585 Japan Japan Society for the Promotion of Science Kojimachi Business Center Building 5-3-1 Kojimachi Chiyoda-ku Tokyo102-0083 Japan Kobe University Rokkodai 1-1 Nada-ku Kobe657-8501 Japan

images obtained by parallel two-step phase-shifting digital holography that does not require recording of intensity of reference wave vary according to the pixel-extraction direction. We evaluated the quality of obtai... 详细信息

ISBN: (纸本)9781957171289

关键词： Quality control

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Multimodal 3d measurement setup for generating multimodal real-world data sets for AI-based transparent object recognition 13

Multimodal 3D measurement setup for generating multimodal re...

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Conference on dimensional Optical Metrology and Inspection for Practical applications XIII

作者： Junger, Christina Landmann, Martin Speck, Henri Heist, Stefan Notni, Gunther Tech Univ Ilmenau Dept Mech Engn Grp Qual Assurance & Ind Image Proc Ilmenau Germany Fraunhofer Inst Appl Opt & Precis Engn Jena Germany

ISBN: (纸本)9781510673953;9781510673946

Multimodal 3d imaging is a key technology in various areas, such as medical technology, trust-based human-robot collaboration and material recognition for recycling. This technology offers new possibilities, particularly for the 3d perception of optically uncooperative surfaces in the VIS and NIR spectral range, e.g., transparent or specular materials. For this purpose, a thermal 3d sensor developed by Landmann et al. allows the 3d detection of transparent and reflective surfaces without object preparation, which can be used to generate real multimodal 3d data sets for AI-based methods. The 3d perception of optically uncooperative surfaces in VIS or NIR is still nowadays an open challenge (cf. Jiang et al.). However, to overcome this challenge with AI-based networks for segmentation, pose estimation or 3d reconstruction (monocular/stereo), data sets with optically uncooperative objects are mandatory. Currently, only few real-world data sets are available. This is due to the high effort and time-consuming process of generating these data sets with ground truth. Currently, transparent objects must be prepared, e.g., painted or powdered, or an identical opaque twin of the uncooperative object is needed (for 3d reconstruction). Currently, transparent object must be labeled manually for segmentation. This makes data acquisition very time consuming and elaborate. We present our multimodal 3d measurement system as well as our new measurement principle, with which we can generate real multimodal 3d data sets with annotation without object preparation techniques. This system significantly reduces the effort required for data acquisition. We also show the advantages and disadvantages of our measurement principle and data set compared to other data sets (generated with object preparation), as well as the current limitations of our novel method. In addition, we discuss the key role of data sets in AI-based methods.

关键词： multimodal imaging deep stereo matching monocular depth estimation segmentation pose estimation data set real non-synthetic object preparation object painting non-Lambertian surface transparent specular thermal 3d sensor TMRP artificial intelligence

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Sound Field Imaging in Gas Flow using Parallel Phase-Shifting digital Holography and Fourier Transform

Sound Field Imaging in Gas Flow using Parallel Phase-Shiftin...

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3d image acquisition and display: technology, perception and applications, 3d, COSI, dH, FLatOptics, IS, pcAOP 2023 - Part of Imaging and Applied Optics Congress 2023

作者： Notte, Shun Hashimoto, Sota Inoue, Tomoyoshi Nishio, Kenzo Xia, Peng Rajput, Sudheesh K. Matoba, Osamu Awatsuji, Yasuhiro Graduate School of Science and Technology Kyoto Institute of Technology Matsugasaki Sakyo-ku Kyoto606-8585 Japan Japan Society for the Promotion of Science Kojimachi Business Center Building 5-3-1 Kojimachi Chiyoda-ku Tokyo102-0083 Japan Advanced Technology Center Kyoto Institute of Technology Matsugasaki Goshokaido-Cho Sakyo-ku Kyoto606-8585 Japan Central 2 1-1-1 Umezono Tsukuba305-8568 Japan Kobe University Organization for Advanced and Integrated Research Rokkodai 1-1 Kobe Nada657-850 Japan Faculty of Electrical Engineering and Electronics Kyoto Institute of Technology Matsugasaki Sakyo-ku Kyoto606-8585 Japan

We propose a method for imaging of sound propagating in gas flow. We recorded a sound and gas flow simultaneously and separated the images of sound from phase images disturbed by gas flow. © 2023 The Author (s).

ISBN: (纸本)9781957171289

关键词： Flow of gases

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Comparison of Non-contact Air Temperature Imaging Technique using Parallel Phase-shifting digital Holography with Thermocouples

Comparison of Non-contact Air Temperature Imaging Technique ...

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3d image acquisition and display: technology, perception and applications, 3d, COSI, dH, FLatOptics, IS, pcAOP 2023 - Part of Imaging and Applied Optics Congress 2023

作者： Kumon, Yuki Inoue, Tomoyoshi Nishio, Kenzo Xia, Peng Kumar, Manoj Matoba, Osamu Rajput, Sudheesh K. Awatsuji, Yasuhiro Graduate School of Science and Technology Kyoto Institute of Technology Matsugasaki Sakyo-ku Kyoto606-8585 Japan Japan Society for the Promotion of Science Kojimachi Business Center Building 5-3-1Kojimachi Chiyoda-ku Tokyo102-0083 Japan Advanced Technology Center Kyoto Institute of Technology Matsugasaki Sakyo-ku Kyoto606-8585 Japan Central 2 1-1-1 Umezono Tsukuba305-8568 Japan Graduate School of System Informatics Kobe University Rokkodai 1-1 Kobe Nada657-8501 Japan Faculty of Electrical Engineering and Electronics Kyoto Institute of Technology Matsugasaki Sakyo ku Kyoto606-8585 Japan

We experimentally compared the air temperatures measured by non-contact imaging technique using parallel phase-shifting digital holography with those measured with a thermocouple. This study revealed that the techniqu... 详细信息

ISBN: (纸本)9781957171289

关键词： Thermocouples

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Laser-driven MeV X-ray Radiography using the NIF-ARC laser system

Laser-Driven MeV X-ray Radiography using the NIF-ARC laser s...

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3d image acquisition and display: technology, perception and applications, 3d, COSI, dH, FLatOptics, IS, pcAOP 2023 - Part of Imaging and Applied Optics Congress 2023

作者： Rusby, d. Kerr, S.M. Williams, G.J. Kemp, A. Aghedo, A. MacPhee, A. Wilks, S. Hill, M.P. Aufderheide, M. Bude, J. Mackinnon, A. Lawrence Livermore National Laboratory LivermoreCA94550 United States

ISBN: (纸本)9781957171289

High intensity lasers (>1 x 1018 W/cm2) interacting with a plasma can accelerate a spectrum of electrons whose temperature can be several mega-electron volts. It has been shown experimentally that the efficiency of laser energy into this electron population is on the order of 10s of percent. There are many potential applications of laser driven sources including the acceleration of protons from a mechanism known as Target-Normal-Sheath-Acceleration and the subsequent generation of neutrons. One application is x-ray radiography. If the populations of MeV electrons are accelerated into a high-Z converter, MeV x-rays can be generated via bremsstrahlung [1].

关键词： High power lasers Laser applications Laser efficiency Laser energy Laser sources Laser systems

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Fast and accurate eye positioning in eye tracking-based 3d display

Fast and accurate eye positioning in eye tracking-based 3D d...

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International Conference on display technology, 2024

作者： Jia, Jia Li, Xin Cao, Hongkun Xu, Huan Kang, Jianghui Tan, Baolin Pengcheng Laboratory Guangdong Shenzhen China Shenzhen Yinglun Technology Co. LTD Guangdong Shenzhen China Changchun University of Science and Technology Jilin China

The eye tracking-based autostereoscopic 3d display provides a large viewing angle, low crosstalk, and large depth perception 3d image experience without using any 3d eyeglasses. However, accurate and fast eye position detection and tracking are still challenging. This study presents an accurate and fast eye positioning algorithm by reducing the computational load of stereo matching and stereo rectification in stereo vision. The accuracy of distance measurement is up to 98.46%. The processing time needed to calculate the distance between the target and the cameras is less than 0.012s. © 2024 John Wiley and Sons Inc. All rights reserved.

关键词： Eye tracking

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3d image acquisition using COACH and related systems

3D image acquisition using COACH and related systems

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3d image acquisition and display: technology, perception and applications, 3d 2022

作者： Rosen, Joseph School of Electrical and Computer Engineering Ben-Gurion University of the Negev P.O. Box 653 Beer-Sheva8410501 Israel

New techniques of 3d image acquisition using coded aperture correlation holography (COACH) with unique imaging properties are presented. Among other things, COACH is applied for incoherent 3d imaging with an extended ... 详细信息

ISBN: (纸本)9781957171098

关键词： image acquisition

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High-Performance image acquisition and Processing for Stereoscopic diagnostic Systems with the Application of Graphical Processing Units

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SENSORS 2022年第2期22卷 471页

作者： Perek, Piotr Mielczarek, Aleksander Makowski, dariusz Lodz Univ Technol TUL Dept Microelect & Comp Sci DMCS PL-93005 Lodz Poland

In recent years, cinematography and other digital content creators have been eagerly turning to Three-dimensional (3d) imaging technology. The creators of movies, games, and augmented reality applications are aware of this technology's advantages, possibilities, and new means of expression. The development of electronic and IT technologies enables the achievement of a better and better quality of the recorded 3d image and many possibilities for its correction and modification in post-production. However, preparing a correct 3d image that does not cause perception problems for the viewer is still a complex and demanding task. Therefore, planning and then ensuring the correct parameters and quality of the recorded 3d video is essential. despite better post-production techniques, fixing errors in a captured image can be difficult, time consuming, and sometimes impossible. The detection of errors typical for stereo vision related to the depth of the image (e.g., depth budget violation, stereoscopic window violation) during the recording allows for their correction already on the film set, e.g., by different scene layouts and/or different camera configurations. The paper presents a prototype of an independent, non-invasive diagnostic system that supports the film crew in the process of calibrating stereoscopic cameras, as well as analysing the 3d depth while working on a film set. The system acquires full Hd video streams from professional cameras using Serial digital Interface (SdI), synchronises them, and estimates and analyses the disparity map. Objective depth analysis using computer tools while recording scenes allows stereographers to immediately spot errors in the 3d image, primarily related to the violation of the viewing comfort zone. The paper also describes an efficient method of analysing a 3d video using Graphics Processing Unit (GPU). The main steps of the proposed solution are uncalibrated rectification and disparity map estimation. The algorithms selected

关键词： stereoscopy 3d disparity map uncalibrated rectification graphics processing units GPU diagnostic system

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