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1تقرير
المؤلفون: Bohacek, Eleni, Coates, Andrew J., Selviah, David R.
مصطلحات موضوعية: Computer Science - Computer Vision and Pattern Recognition, Electrical Engineering and Systems Science - Image and Video Processing
الوصف: This paper investigates how the inherent quantization of camera sensors introduces uncertainty in the calculated position of an observed feature during 3-D mapping. It is typically assumed that pixels and scene features are points, however, a pixel is a two-dimensional area that maps onto multiple points in the scene. This uncertainty region is a bound for quantization error in the calculated point positions. Earlier studies calculated the volume of two intersecting pixel views, approximated as a cuboid, by projecting pyramids and cones from the pixels into the scene. In this paper, we reverse this approach by generating an array of scene points and calculating which scene points are detected by which pixel in each camera. This enables us to map the uncertainty regions for every pixel correspondence for a given camera system in one calculation, without approximating the complex shapes. The dependence of the volumes of the uncertainty regions on camera baseline length, focal length, pixel size, and distance to object, shows that earlier studies overestimated the quantization error by at least a factor of two. For static camera systems the method can also be used to determine volumetric scene geometry without the need to calculate disparity maps.
Comment: As submitted to IEEE Transactions on Pattern Analysis and Machine Intelligence on 4th September 2020الوصول الحر: http://arxiv.org/abs/2010.08390Test
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2دورية أكاديمية
المؤلفون: Potorti, Francesco, Torres-Sospedra, Joaquín, Quezada-Gaibor, Darwin, Jimenez, Antonio Ramon, Seco, Fernando, Perez-Navarro, Antoni, Ortiz, Miguel, Zhu, Ni, Renaudin, Valerie, Ichikari, Ryosuke, Shimomura, Ryo, Ohta, Nozomu, Nagae, Satsuki, Kurata, Takeshi, Wei, Dongyan, Ji, Xinchun, Zhang, Wenchao, Kram, Sebastian, Stahlke, Maximilian, Mutschler, Christopher, Crivello, Antonino, Barsocchi, Paolo, Girolami, Michele, Palumbo, Filippo, Chen, Ruizhi, Wu, Yuan, Li, Wei, Yu, Yue, Xu, Shihao, Huang, Lixiong, Liu, Tao, Kuang, Jian, Niu, Xiaoji, Yoshida, Takuto, Nagata, Yoshiteru, Fukushima, Yuto, Fukatani, Nobuya, Hayashida, Nozomi, Asai, Yusuke, Urano, Kenta, Ge, Wenfei, Lee, Nien-Ting, Fang, Shih-Hau, Jie, You-Cheng, Young, Shawn-Rong, Chien, Ying-Ren, Yu, Chih-Chieh, Ma, Chengqi, Wu, Bang, Zhang, Wei, Wang, Yankun, Fan, Yonglei, Poslad, Stefan, Selviah, David R., Wang, Weixi, Yuan, Hong, Yonamoto, Yoshitomo, Yamaguchi, Masahiro, Kaichi, Tomoya, Zhou, Baoding, Liu, Xu, Gu, Zhining, Yang, Chengjing, Wu, Zhiqian, Xie, Doudou, Huang, Can, Zheng, Lingxiang, Peng, Ao, Jin, Ge, Wang, Qu, Luo, Haiyong, Xiong, Hao, Bao, Linfeng, Zhang, Pushuo, Zhao, Fang, Yu, Chia-An, Hung, Chun-Hao, Antsfeld, Leonid, Silva, Ivo Miguel Menezes, Pendão, Cristiano Gonçalves, Meneses, Filipe, Nicolau, Maria João, Costa, António, Moreira, Adriano, Cock, Cedric De, Plets, David, Opiela, Miroslav, Jakub Džama, Zhang, Liqiang, Li, Hu, Chen, Boxuan, Liu, Yu, Yean, Seanglidet, Lim, Bo Zhi, Teo, Wei Jie, Lee, Bu Sung, Oh, Hong Lye
مصطلحات موضوعية: Sensor phenomena and characterization, Indoor navigation, Testing, Standards, Satellite broadcasting, Recurrent neural networks, Received signal strength indicator, Indoor positioning and navigation, evaluation, smartphone-based positioning, foot-mounted IMU, positioning in industrial scenarios and factories, vehicle-positioning, Ciências Naturais::Ciências da Computação e da Informação, Science & Technology
الوصف: Every year, for ten years now, the IPIN competition has aimed at evaluating real-world indoor localisation systems by testing them in a realistic environment, with realistic movement, using the EvAAL framework. The competition provided a unique overview of the state-of-the-art of systems, technologies, and methods for indoor positioning and navigation purposes. Through fair comparison of the performance achieved by each system, the competition was able to identify the most promising approaches and to pinpoint the most critical working conditions. In 2020, the competition included 5 diverse off-site off-site Tracks, each resembling real use cases and challenges for indoor positioning. The results in terms of participation and accuracy of the proposed systems have been encouraging. The best performing competitors obtained a third quartile of error of 1 m for the Smartphone Track and 0.5 m for the Foot-mounted IMU Track. While not running on physical systems, but only as algorithms, these results represent impressive achievements. ; Track 3 organizers were supported by the European Union’s Horizon 2020 Research and Innovation programme under the Marie Skłodowska Curie Grant 813278 (A-WEAR: A network for dynamic WEarable Applications with pRivacy constraints), MICROCEBUS (MICINN, ref. RTI2018-095168-B-C55, MCIU/AEI/FEDER UE), INSIGNIA (MICINN ref. PTQ2018-009981), and REPNIN+ (MICINN, ref. TEC2017-90808-REDT). We would like to thanks the UJI’s Library managers and employees for their support while collecting the required datasets for Track 3. Track 5 organizers were supported by JST-OPERA Program, Japan, under Grant JPMJOP1612. Track 7 organizers were supported by the Bavarian Ministry for Economic Affairs, Infrastructure, Transport and Technology through the Center for Analytics-Data-Applications (ADA-Center) within the framework of “BAYERN DIGITAL II. ” Team UMinho (Track 3) was supported by FCT—Fundação para a Ciência e Tecnologia within the R&D Units Project Scope under Grant UIDB/00319/2020, and the Ph.D. ...
وصف الملف: application/pdf
العلاقة: info:eu-repo/grantAgreement/EC/H2020/813278/EU; info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00319%2F2020/PT; info:eu-repo/grantAgreement/FCT/POR_NORTE/PD%2FBD%2F137401%2F2018/PT; https://ieeexplore.ieee.org/document/9439493Test; F. Potortì et al., "Off-Line Evaluation of Indoor Positioning Systems in Different Scenarios: The Experiences From IPIN 2020 Competition," in IEEE Sensors Journal, vol. 22, no. 6, pp. 5011-5054, 15 March15, 2022, doi:10.1109/JSEN.2021.3083149.; https://hdl.handle.net/1822/82092Test
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3دورية أكاديمية
المؤلفون: Ma, Chengqi, Wu, Bang, Poslad, Stefan, Selviah, David R.
المصدر: IEEE Transactions on Mobile Computing ; volume 21, issue 2, page 740-756 ; ISSN 1536-1233 1558-0660 2161-9875
الإتاحة: https://doi.org/10.1109/tmc.2020.3012563Test
http://xplorestaging.ieee.org/ielx7/7755/9674216/09151400.pdf?arnumber=9151400Test -
4دورية أكاديمية
المؤلفون: Potortì, Francesco, Park, Sangjoon, Crivello, Antonino, Palumbo, Filippo, Girolami, Michele, Barsocchi, Paolo, Lee, Soyeon, Torres-Sospedra, Joaquín, Jiménez Ruiz, Antonio R., Pérez-Navarro, Antoni, Martín Mendoza-Silva, Germán, Seco Granja, Fernando, Ortiz, Miguel, Perul, Johan, Renaudin, Valerie, Kang, Hyunwoong, Park, Soyoung, Lee, Jae Hong, Park, Chan Gook, Ha, Jisu, Han, Jaeseung, Park, Changjun, Kim, Keunhye, Lee, Yonghyun, Gye, Seunghun, Lee, Keumryeol, Kim, Eunjee, Choi, Jeong-Sik, Choi, Yang-Seok, Talwar, Shilpa, Cho, Seong Yun, Ben-Moshe, Boaz, Scherbakov, Alex, Antsfeld, Leonid, Sansano-Sansano, Emilio, Chidlovskii, Boris, Kronenwett, Nikolai, Prophet, Silvia, Landay, Yael, Marbel, Revital, Zheng, Lingxiang, Peng, Ao, Lin, Zhichao, Wu, Bang, Ma, Chengqi, Poslad, Stefan, Selviah, David R., Wu, Wei, Ma, Zixiang, Zhang, Wenchao, Wei, Dongyan, Yuan, Hong, Jiang, Jun-Bang, Huang, Shao-Yung, Liu, Jing-Wen, Su, Kuan-Wu, Leu, Jenq-Shiou, Nishiguchi, Kazuki, Bousselham, Walid, Uchiyama, Hideaki, Thomas, Diego, Shimada, Atsushi, Taniguchi, Rin-Ichiro, Cortés Puschel, Vicente, Lungenstrass Poulsen, Tomás, Ashraf, Imran, Lee, Chanseok, Ali, Muhammad Usman, Im, Yeongjun, Kim, Gunzung, Eom, Jeongsook, Hur, Soojung, Park, Yongwan, Opiela, Miroslav, Moreira, Adriano, Nicolau, Maria João, Pendão, Cristiano, Silva, Ivo, Meneses, Filipe, Costa, António, Trogh, Jens, Plets, David, Chien, Ying-Ren, Chang, Tzu-Yu, Fang, Shih-Hau, Tsao, Yu
المساهمون: Potortì, Francesco, Crivello, Antonino, Palumbo, Filippo, Girolami, Michele, Barsocchi, Paolo, Torres-Sospedra, Joaquín, Jiménez Ruiz, Antonio Ramón, Pérez-Navarro, Antoni, Martín Mendoza-Silva, Germán, Seco, Fernando, Renaudin, Valerie, Park, Soyoung, Lee, Jae Hong, Park, Chan Gook, Lee, Keumryeol, Choi, Yang-Seok, Talwar, Shilpa, Cho, Seong Yun, Chidlovskii, Boris, Peng, Ao, Wu, Bang, Ma, Chengqi, Poslad, Stefan, Selviah, David R., Zhang, Wenchao, Yuan, Hong, Leu, Jenq-Shiou, Uchiyama, Hideaki, Thomas, Diego, Shimada, Atsushi, Lungenstrass Poulsen, Tomás, Ashraf, Imran, Ali, Muhammad Usman, Opiela, Miroslav, Moreira, Adriano, Costa, António, Trogh, Jens, Plets, David, Chien, Ying-Ren, Fang, Shih-Hau, Tsao, Yu
مصطلحات موضوعية: Indoor localisation, Indoor navigation, Competition, Benchmarking, Smartphone-based positioning, Foot-mounted pedestrian dead reckoning, Wi-Fi fingerprinting, Magnetic field, Camera-based positioning, Inertial-based positioning, Sensor fusion, Kalman filter, Particle filter
الوصف: IPIN 2019 Competition, sixth in a series of IPIN competitions, was held at the CNR Research Area of Pisa (IT), integrated into the program of the IPIN 2019 Conference. It included two on-site real-time Tracks and three off-site Tracks. The four Tracks presented in this paper were set in the same environment, made of two buildings close together for a total usable area of 1000 m2 outdoors and and 6000 m2 indoors over three floors, with a total path length exceeding 500 m. IPIN competitions, based on the EvAAL framework, have aimed at comparing the accuracy performance of personal positioning systems in fair and realistic conditions: past editions of the competition were carried in big conference settings, university campuses and a shopping mall. Positioning accuracy is computed while the person carrying the system under test walks at normal walking speed, uses lifts and goes up and down stairs or briefly stops at given points. Results presented here are a showcase of state-of-the-art systems tested side by side in real-world settings as part of the on-site real-time competition Tracks. Results for off-site Tracks allow a detailed and reproducible comparison of the most recent positioning and tracking algorithms in the same environment as the on-site Tracks. ; Fundación para la Ciencia y Tecnología; 10.13039/100007225-Ministry of Science and Technology; Institute for Information and communications Technology Promotion IITP grant funded by the Korea government MSIT; Basic Science Research Program through the National Research Foundation of Korea NRF funded by the Ministry of Science; MSIT Ministry of Science and ICT Korea under the ITRC; Slovak Research and Development Agency; Strategic Priority Research Program; Korea government NFA; ICT R and D Program of MSIPIITP; 10.13039/501100004837-Ministerio de Ciencia e Innovación; JSPS KAKENHI; ICT R and D Program of MSIPIITP. ; Peer reviewed
العلاقة: Publisher's version; https://doi.org/10.1109/ACCESS.2020.3037221Test; Sí; IEEE Access 8: 206674 - 206718 (2020); http://hdl.handle.net/10261/232089Test
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5دورية أكاديمية
المؤلفون: Papatryfonos, Konstantinos, Selviah, David R., Maman, Avi, Hasharoni, Kobi, Brimont, Antoine Christian Jacques, Zanzi, Andrea, Kraft, Jochen, Sidorov, Victor, Seifried, Marc, Baumgartner, Yannick, Horst, Folkert, Offrein, Bert Jan, Lawniczuk, Katarzyna, Broeke, Ronald G., Terzenidis, Nikos, Sanchis Kilders, Pablo
المساهمون: Universitat Politècnica de València. Instituto Universitario de Tecnología Nanofotónica - Institut Universitari de Tecnologia Nanofotònica, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, COMISION DE LAS COMUNIDADES EUROPEA
مصطلحات موضوعية: Silicon photonics, 3D device integration, Hybrid integration, Optical interconnects, Quantum well hybrid laser, Quantum dots, WDM, CWDM, Slow-light modulators, Co-package, TEORIA DE LA SEÑAL Y COMUNICACIONES
الوصف: [EN] We report recent advances in photonic-electronic integration developed in the European research project L3MATRIX. The aim of the project was to demonstrate the basic building blocks of a co-packaged optical system. Two-dimensional silicon photonics arrays with 64 modulators were fabricated. Novel modulation schemes based on slow light modulation were developed to assist in achieving an efficient performance of the module. Integration of DFB laser sources within each cell in the matrix was demonstrated as well using wafer bonding between the InP and SOI wafers. Improved semiconductor quantum dot MBE growth, characterization and gain stack designs were developed. Packaging of these 2D photonic arrays in a chiplet configuration was demonstrated using a vertical integration approach in which the optical interconnect matrix was flip-chip assembled on top of a CMOS mimic chip with 2D vertical fiber coupling. The optical chiplet was further assembled on a substrate to facilitate integration with the multi-chip module of the co-packaged system with a switch surrounded by several such optical chiplets. We summarize the features of the L3MATRIX co-package technology platform and its holistic toolbox of technologies to address the next generation of computing challenges. ; The L3MATRIX project is co-funded by the Horizon 2020 Framework Programme of the European Union with Grant Agreement Nr. 688544. L3MATRIX project is an initiative of the Photonics Public Private Partnership. ; Papatryfonos, K.; Selviah, DR.; Maman, A.; Hasharoni, K.; Brimont, ACJ.; Zanzi, A.; Kraft, J. (2021). Co-Package Technology Platform for Low-Power and Low-Cost Data Centers. Applied Sciences. 11(13):1-24. https://doi.org/10.3390/app11136098Test ; 1 ; 24 ; 11 ; 13
العلاقة: Applied Sciences; info:eu-repo/grantAgreement/EC/H2020/688544/EU; https://doi.org/10.3390/app11136098Test; http://hdl.handle.net/10251/182723Test; urn:eissn:2076-3417
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6دورية أكاديمية
المؤلفون: Potorti, Francesco, Park, Sangjoon, Crivello, Antonino, Palumbo, Filippo, Girolami, Michele, Barsocchi, Paolo, Lee, Soyeon, Torres-Sospedra, Joaquin, Ruiz, Antonio Ramon Jimenez, Perez-Navarro, Antoni, Mendoza-Silva, German Martin, Seco, Fernando, Ortiz, Miguel, Perul, Johan, Renaudin, Valerie, Kang, Hyunwoong, Park, Soyoung, Lee, Jae Hong, Park, Chan Gook, Ha, Jisu, Han, Jaeseung, Park, Changjun, Kim, Keunhye, Lee, Yonghyun, Gye, Seunghun, Lee, Keumryeol, Kim, Eunjee, Choi, Jeong-Sik, Choi, Yang-Seok, Talwar, Shilpa, Cho, Seong Yun, Ben-Moshe, Boaz, Scherbakov, Alex, Antsfeld, Leonid, Sansano-Sansano, Emilio, Chidlovskii, Boris, Kronenwett, Nikolai, Prophet, Silvia, Landay, Yael, Marbel, Revital, Zheng, Lingxiang, Peng, Ao, Lin, Zhichao, Wu, Bang, Ma, Chengqi, Poslad, Stefan, Selviah, David R., Wu, Wei, Ma, Zixiang, Zhang, Wenchao, Wei, Dongyan, Yuan, Hong, Jiang, Jun-Bang, Huang, Shao-Yung, Liu, Jing-Wen, Su, Kuan-Wu, Leu, Jenq-Shiou, Nishiguchi, Kazuki, Bousselham, Walid, Uchiyama, Hideaki, Thomas, Diego, Shimada, Atsushi, Taniguchi, Rin-Ichiro, Puschel, Vicente Cortes, Poulsen, Tomas Lungenstrass, Ashraf, Imran, Lee, Chanseok, Ali, Muhammad Usman, Im, Yeongjun, Kim, Gunzung, Eom, Jeongsook, Hur, Soojung, Park, Yongwan, Opiela, Miroslav, Moreira, Adriano, Nicolau, Maria Joao, Pendao, Cristiano, Silva, Ivo, Meneses, Filipe, Costa, Antonio, Trogh, Jens, Plets, David, Chien, Ying-Ren, Chang, Tzu-Yu, Fang, Shih-Hau, Tsao, Yu
المصدر: IEEE access, 8, 206674–206718 ; ISSN: 2169-3536
مصطلحات موضوعية: ddc:620, Engineering & allied operations, info:eu-repo/classification/ddc/620
الوصف: PIN 2019 Competition, sixth in a series of IPIN competitions, was held at the CNR Research Area of Pisa (IT), integrated into the program of the IPIN 2019 Conference. It included two on-site real-time Tracks and three off-site Tracks. The four Tracks presented in this paper were set in the same environment, made of two buildings close together for a total usable area of 1000 m 2 outdoors and and 6000 m 2 indoors over three floors, with a total path length exceeding 500 m. IPIN competitions, based on the EvAAL framework, have aimed at comparing the accuracy performance of personal positioning systems in fair and realistic conditions: past editions of the competition were carried in big conference settings, university campuses and a shopping mall. Positioning accuracy is computed while the person carrying the system under test walks at normal walking speed, uses lifts and goes up and down stairs or briefly stops at given points. Results presented here are a showcase of state-of-the-art systems tested side by side in real-world settings as part of the on-site real-time competition Tracks. Results for off-site Tracks allow a detailed and reproducible comparison of the most recent positioning and tracking algorithms in the same environment as the on-site Tracks.
وصف الملف: application/pdf
العلاقة: info:eu-repo/semantics/altIdentifier/wos/000594446900001; info:eu-repo/semantics/altIdentifier/issn/2169-3536; https://publikationen.bibliothek.kit.edu/1000130123Test; https://publikationen.bibliothek.kit.edu/1000130123/104023450Test; https://doi.org/10.5445/IR/1000130123Test
الإتاحة: https://doi.org/10.5445/IR/1000130123Test
https://doi.org/10.1109/ACCESS.2020.3037221Test
https://publikationen.bibliothek.kit.edu/1000130123Test
https://publikationen.bibliothek.kit.edu/1000130123/104023450Test -
7دورية أكاديمية
المؤلفون: Papatryfonos, Konstantinos, Angelova, Todora, Brimont, Antoine, Reid, Barry, Guldin, Stefan, Smith, Peter Raymond, Tang, Mingchu, Li, Keshuang, Seeds, Alwyn J., Liu, Huiyun, Selviah, David R.
المساهمون: H2020 Industrial Leadership
المصدر: AIP Advances ; volume 11, issue 2 ; ISSN 2158-3226
الوصف: A series of AlxGa(1−x)As ternary alloys were grown by molecular beam epitaxy (MBE) at the technologically relevant composition range, x < 0.45, and characterized using spectroscopic ellipsometry to provide accurate refractive index values in the wavelength region below the bandgap. Particular attention is given to O-band and C-band telecommunication wavelengths around 1.3 µm and 1.55 µm, as well as at 825 nm. MBE gave a very high accuracy for grown layer thicknesses, and the alloys’ precise compositions and bandgap values were confirmed using high-resolution x-ray diffraction and photoluminescence, to improve the refractive index model fitting accuracy. This work is the first systematic study for MBE-grown AlxGa(1−x)As across a wide spectral range. In addition, we employed a very rigorous measurement-fitting procedure, which we present in detail.
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8دورية أكاديمية
المؤلفون: Gao, Shuo, Duan, Jifang, Kitsos, Vasileios, Selviah, David R., Nathan, Arokia
المساهمون: Cambridge Touch Technologies
المصدر: IEEE Journal of the Electron Devices Society ; volume 6, page 766-773 ; ISSN 2168-6734
مصطلحات موضوعية: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Biotechnology
الإتاحة: https://doi.org/10.1109/jeds.2018.2848917Test
http://xplorestaging.ieee.org/ielx7/6245494/8232486/08391712.pdf?arnumber=8391712Test -
9دورية أكاديمية
المصدر: Circuit World, 2012, Vol. 38, Issue 2, pp. 59-63.
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10دورية أكاديمية
المؤلفون: Pitwon, Richard C.A., Hopkins, Ken, Milward, Dave, Muggeridge, Malcolm, Selviah, David R., Wang, Kai
المصدر: Circuit World, 2010, Vol. 36, Issue 4, pp. 3-11.