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Automatic Registration of Terrestrial Laser Scanning Point Clouds using Panoramic Reflectance ImagesKang, Z. (author), Li, J. (author), Zhang, L. (author), Zhao, Q. (author), Zlatanova, S. (author)This paper presents a new approach to the automatic registration of terrestrial laser scanning (TLS) point clouds using panoramic reflectance images. The approach follows a two-step procedure that includes both pair-wise registration and global registration. The pair-wise registration consists of image matching (pixel-to-pixel correspondence)...journal article 2009
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Li, D.U. (author), Arlt, J. (author), Richardson, J. (author), Walker, R. (author), Buts, A. (author), Stoppa, D. (author), Charbon, E. (author), Henderson, R. (author)A compact real-time fluorescence lifetime imaging microscopy (FLIM) system based on an array of low dark count 0.13?m CMOS singlephoton avalanche diodes (SPADs) is demonstrated. Fast background-insensitive fluorescence lifetime determination is achieved by use of a recently proposed algorithm called ‘Integration for Extraction Method’ (IEM) [J....journal article 2010
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Li, D.D.U. (author), Arlt, J. (author), Tyndall, D. (author), Walker, R. (author), Richardson, J. (author), Stoppa, D. (author), Charbon, E. (author), Henderson, R.K. (author)A high-speed and hardware-only algorithm using a center of mass method has been proposed for single-detector fluorescence lifetime sensing applications. This algorithm is now implemented on a field programmable gate array to provide fast lifetime estimates from a 32 × 32 low dark count 0.13 ?m complementary metaloxide-semiconductor single-photon...journal article 2011
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Li, Y. (author)Scale is an important parameter of images. Different objects or image structures (e.g. edges and corners) can appear at different scales and each is meaningful only over a limited range of scales. Multi-scale analysis has been widely used in image processing and computer vision, serving as the basis for many high-level image analysis systems....doctoral thesis 2013
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Jansen, K. (author), Van der Steen, A.F.W. (author), Wu, M. (author), Van Beusekom, H.M.M. (author), Springeling, G. (author), Li, X. (author), Zhou, Q. (author), Shung, K.K. (author), De Kleijn, D.P.V. (author), Van Soest, G. (author)The natural history of atherosclerosis is marked by changes in the lipid biochemistry in the diseased arterial wall. As lesions become more vulnerable, different cholesterol species accumulate in the plaque. Understanding unstable atherosclerosis as a pharmacological and interventional therapeutic target requires chemically specific imaging of...journal article 2014
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Li, Z. (author)Crohn’s disease (CD) is a chronic inflammatory bowel disease (IBD) that affects millions of people in Europe alone. It is important to accurately assess the disease severity in a safe and non-invasive manner in order to improve the treatment of patients with CD. Furthermore, the ideal assessment must be objective, reproducible, quantitative and...doctoral thesis 2015
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Jamshidi, A. (author), Faghih Roohi, S. (author), Nunez, Alfredo (author), Babuska, R. (author), De Schutter, B.H.K. (author), Dollevoet, R.P.B.J. (author), Li, Z. (author)This paper develops a defect-based risk analysis methodology for estimating rail failure risk. The methodology relies on an evolution model addressing the severity level of rail surface defect, called squat. The risk of rail failure is assessed by analyzing squat failure probability using a probabilistic analysis of the squat cracks. For this...conference paper 2016
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Li, X. (author)The geo-graphical location at which an image or video was taken is a key piece of multimedia information. Such geo-information has become an indispensable component of systems enabling personalized and context-aware multimedia services. The research reported in this thesis investigates how to automatically derive geo-information from multimedia...doctoral thesis 2016
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Li, Xuyang (author)The application of Compressive Sampling (CS) in the medical ultrasound has been widely studied in recent years with the growing requirement of reconstructing high-quality images with smaller data size. Most of the current studies with successful CS reconstruction are mainly focusing on the mathematical applications of CS theory in ultrasound...master thesis 2017
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Puylaert, Carl A.J. (author), Schüffler, Peter J. (author), Naziroglu, R.E. (author), Tielbeek, Jeroen A.W. (author), Li, Z. (author), Makanyanga, Jesica C. (author), Tutein Nolthenius, Charlotte J. (author), Nio, C. Yung (author), Pendsé, Douglas A. (author), Menys, Alex (author), Ponsioen, Cyriel Y. (author), Atkinson, David (author), Forbes, Alastair (author), Buhmann, Joachim M. (author), Fuchs, Thomas J. (author), Hatzakis, Haralambos (author), van Vliet, L.J. (author), Stoker, Jaap (author), Taylor, Stuart A. (author), Vos, F.M. (author)Rationale and Objectives: The objective of this study was to develop and validate a predictive magnetic resonance imaging (MRI) activity score for ileocolonic Crohn disease activity based on both subjective and semiautomatic MRI features. Materials and Methods: An MRI activity score (the “virtual gastrointestinal tract [VIGOR]” score) was...journal article 2018
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Li, Y. (author), Cheng, G. (author), Pang, Y. (author), Kuai, Moshen (author)Poor working environment leads to frequent failures of planetary gear trains. However, complex structure and variable transmission make the vibration signal strongly non-linear and non-stationary, which brings big problems to fault diagnosis. A method of planetary gear fault diagnosis via feature image extraction based on multi central...journal article 2018
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Sung, Shijun (author), Dabironezare, Shahab Oddin (author), Llombart, Nuria (author), Selvin, Skyler (author), Bajwa, Neha (author), Chantra, Somporn (author), Nowroozi, Bryan (author), Garritano, James (author), Goell, Jacob (author), Li, Alex (author), Deng, S.X. (author), Brown, Elliott (author), Grundfest, Warren S. (author), Taylor, Zachary D. (author)Reflection-mode terahertz (THz) imaging of corneal tissue water content (CTWC) is a proposed method for early accurate detection and study of corneal diseases. Despite promising results from ex vivo and in vivo cornea studies, interpretation of the reflectivity data is confounded by the contact between corneal tissue and dielectric windows used...journal article 2018
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Li, X. (author), Larson, M.A. (author), Hanjalic, A. (author)We propose an image representation and matching approach that substantially improves visual-based location estimation for images. The main novelty of the approach, called distinctive visual element matching (DVEM), is its use of representations that are specific to the query image whose location is being predicted. These representations are...journal article 2018
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Li, Z. (author), van Vliet, L.J. (author), Stoker, Jaap (author), Vos, F.M. (author)Purpose: To develop a method for intra-patient registration of pre- and post-contrast abdominal MR images with large local deformations and large intensity variations. Method: A hybrid method is proposed to deal with this problem. It consists of two coupled techniques: (1) descriptor matching (DM) at the original resolution using a discrete...journal article 2018
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Li, Na (author), van Unen, Vincent (author), Guo, Nannan (author), Abdelaal, T.R.M. (author), Somarakis, Antonios (author), Eggermont, Jeroen (author), Mahfouz, A.M.E.T.A. (author), Chuva de Sousa Lopes, Susana M. (author), Lelieveldt, B.P.F. (author), Koning, Frits (author)The human fetal immune system must protect the infant against the sudden exposure to a large variety of pathogens upon birth. While it is known that the fetal immune system develops in sequential waves, relatively little is known about the composition of the innate and adaptive immune system in the tissues. Here, we applied high-dimensional...journal article 2019
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Li, Jiahui (author)A cross-domain visual place recognition (VPR) task is proposed in this work, i.e., matching images of the same architectures depicted in different domains. VPR is commonly treated as an image retrieval task, where a query image from an unknown location is matched with relevant instances from geo-tagged gallery database. Different from...master thesis 2019
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Ouyang, B. (author), Li, Yanlu (author), Kruidhof, Marten (author), Horsten, R.C. (author), Baets, Roel (author), van Dongen, K.W.A. (author), Caro-Schuurman, J. (author)We report a highly sensitive ultrasound sensor based on an integrated photonics silicon Mach-Zehnder interferometer (MZI). One arm of the MZI is located on a thin membrane, acting as the sensing part of the device. Ultrasound waves excite the membrane's vibrational mode, thus inducing modulation of the MZI transmission. The measured sensor...conference paper 2020
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Ren, Shaoting (author), Menenti, M. (author), Jia, Li (author), Zhang, Jing (author), Zhang, Jingxiao (author), Li, Xin (author)Mountain glaciers are excellent indicators of climate change and have an important role in the terrestrial water cycle and food security in many parts of the world. Glaciers are the major water source of rivers and lakes in the Nyainqentanglha Mountains (NM) region, where the glacier area has the second largest extent on the Tibetan Plateau....journal article 2020
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Wang, L. (author), Wang, Ping (author), Chen, Rong (author), Li, S. (author), Li, Z. (author)Embedded rail system (ERS) is a new type of track structure with many advantages due to its continuous rail support. The rapid development of urban rail transit all over the world renders its application prospect broad. However, the cracks and debonds in ERS present a threat to the traffic safety and a possibility for high maintenance costs....journal article 2020
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He, Yuan (author), Li, Xinyu (author), Li, Runlong (author), Wang, J. (author), Jing, Xiaojun (author)Radio frequency interference, which makes it difficult to produce high-quality radar spectrograms, is a major issue for micro-Doppler-based human activity recognition (HAR). In this paper, we propose a deep-learning-based method to detect and cut out the interference in spectrograms. Then, we restore the spectrograms in the cut-out region....journal article 2020