TY - JOUR AU - Glira, Philipp AU - Weidinger, Christoph AU - Otepka-Schremmer, Johannes AU - Ressl, Camillo AU - Pfeifer, Norbert AU - Haberler-Weber, Michaela TI - Nonrigid Point Cloud Registration Using Piecewise Tricubic Polynomials as Transformation Model JF - REMOTE SENSING J2 - REMOTE SENS-BASEL VL - 15 PY - 2023 IS - 22 PG - 32 SN - 2072-4292 DO - 10.3390/rs15225348 UR - https://m2.mtmt.hu/api/publication/34624595 ID - 34624595 LA - English DB - MTMT ER - TY - JOUR AU - Chau, Wai Yi AU - Loong, Cheng Ning AU - Wang, Yu-Hsing AU - Chiu, Siu-Wai AU - Tan, Tun Jian AU - Wu, Jimmy AU - Leung, Mei Ling AU - Tan, Pin Siang AU - Ooi, Ghee Leng TI - Understanding the dynamic properties of trees using the motions constructed from multi-beam flash light detection and ranging measurements JF - JOURNAL OF THE ROYAL SOCIETY INTERFACE J2 - J R SOC INTERFACE VL - 19 PY - 2022 IS - 193 PG - 15 SN - 1742-5689 DO - 10.1098/rsif.2022.0319 UR - https://m2.mtmt.hu/api/publication/33345613 ID - 33345613 AB - Measuring the three-dimensional motion of trees at every position remains challenging as it requires dynamic measurement technology with sufficient spatial and temporal resolution. Consequently, this study explores the use of a novel multi-beam flash light detection and ranging (LiDAR) sensor to tackle such a sensing barrier. A framework is proposed to record tree vibrations, to construct the motions of tree skeletons from the point-cloud frames recorded by the LiDAR sensor and to derive the dynamic properties of trees. The feasibility of the framework is justified through measurement on a Ficus microcarpa under pull-and-release tests. The relative differences for the first two modal frequencies between the LiDAR and linear variable differential transformer measurements in the displacement Fourier spectra are 0.1% and 2.5%, respectively. The framework is further adopted to study the dynamic response of different trees subjected to typhoons, including a Liquidambar formosana, three Araucaria heterophylla trees, a Sterculia lanceolata, a Celtis sinensis, a Tabebuia chrysantha and a Cinnamomum camphora. Results suggest that broadleaved trees might exhibit vibration in a wide frequency band, whereas the coniferous trees could follow a distinct dominant frequency. LA - English DB - MTMT ER - TY - JOUR AU - Junttila, Samuli AU - Campos, Mariana AU - Hölttä, Teemu AU - Lindfors, Lauri AU - El Issaoui, Aimad AU - Vastaranta, Mikko AU - Hyyppä, Hannu AU - Puttonen, Eetu TI - Tree Water Status Affects Tree Branch Position JF - FORESTS J2 - FORESTS VL - 13 PY - 2022 IS - 5 SP - 728 SN - 1999-4907 DO - 10.3390/f13050728 UR - https://m2.mtmt.hu/api/publication/32870339 ID - 32870339 LA - English DB - MTMT ER - TY - JOUR AU - Wang, Di AU - Puttonen, Eetu AU - Casella, Eric TI - PlantMove: A tool for quantifying motion fields of plant movements from point cloud time series JF - INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION J2 - INT J APPL EARTH OBS VL - 110 PY - 2022 PG - 11 SN - 1569-8432 DO - 10.1016/j.jag.2022.102781 UR - https://m2.mtmt.hu/api/publication/32816210 ID - 32816210 LA - English DB - MTMT ER - TY - JOUR AU - Campos, Mariana Batista AU - Litkey, Paula AU - Wang, Yunsheng AU - Chen, Yuwei AU - Hyyti, Heikki AU - Hyyppä, Juha AU - Puttonen, Eetu TI - A Long-Term Terrestrial Laser Scanning Measurement Station to Continuously Monitor Structural and Phenological Dynamics of Boreal Forest Canopy JF - FRONTIERS IN PLANT SCIENCE J2 - FRONT PLANT SCI VL - 11 PY - 2021 PG - 15 SN - 1664-462X DO - 10.3389/fpls.2020.606752 UR - https://m2.mtmt.hu/api/publication/31812559 ID - 31812559 LA - English DB - MTMT ER - TY - JOUR AU - Du, Xiaopeng AU - Xiao, Aiping AU - Yue, Hongqiang TI - Automated replacement scheme of DC transformer bushing based on laser scanning profile: Design and experiment JF - ELECTRIC POWER SYSTEMS RESEARCH J2 - ELECTR POW SYST RES VL - 192 PY - 2021 PG - 14 SN - 0378-7796 DO - 10.1016/j.epsr.2020.106967 UR - https://m2.mtmt.hu/api/publication/32399366 ID - 32399366 AB - The valve-side bushing is an important part of the ultra-high voltage (UHV) converter transformer. The bushing needs to be replaced at the converter station if the bushing is damaged. The bushing replacement of the existing project needs to be carried out by crane and manual operation. However, the replacement process takes a long time and the lifting accuracy is poor, which may cause damage to the bushing. A scheme based on a 2D laser profile scanner for automatic bushing replacement applied to direct-current (DC) converter transformer is proposed in this paper, which can replace any damaged bushing in the valve hall without removing other equipment. An initial value of the cylinder fitting algorithm based on the 2D laser profile is proposed in order to solve the position of the bushing, which fully considers the characteristics of the laser profile scanner, and uses the circle and straight-line fitting algorithm to solve the initial value. It is proved that the algorithm can improve the efficiency of cylinder fitting by comparing with the results of the mean value method. Industrial robots are used to implement the replacement scheme by using this algorithm, and the feasibility of the replacement scheme is verified. LA - English DB - MTMT ER - TY - JOUR AU - Hallmark, Alesia J. AU - Maurer, Gregory E. AU - Pangle, Robert E. AU - Litvak, Marcy E. TI - Watching plants' dance: movements of live and dead branches linked to atmospheric water demand JF - ECOSPHERE J2 - ECOSPHERE VL - 12 PY - 2021 IS - 8 PG - 18 SN - 2150-8925 DO - 10.1002/ecs2.3705 UR - https://m2.mtmt.hu/api/publication/32328829 ID - 32328829 AB - Diurnal branch movements in woody plants have only recently been described in detail. While previously only vegetative and reproductive structures have been known to move on hourly timescales, imaging technologies such as terrestrial laser scanning and near-surface repeat digital photography provide a means of remotely monitoring plant movements at high enough temporal and spatial resolution to capture rhythmic movements of woody material. Virtually, nothing is known about the range of species and ecosystems in which woody movements might occur or what causes these movements. We report that diurnal woody branch movements occur in a number of tree and shrub species across a broad range of abiotic conditions. We examined detailed branch movements in one species, creosote (Larrea tridentata), and found that branch movements were highly correlated with humidity, air temperature, vapor pressure deficit, and stem water potential: all factors related to plant water status. We also found that live and dead branch movements were distinct in the timing of their movements and in the abiotic conditions with which they were most correlated. Changes in dead branch position were most correlated with humidity, with these movements consistently lagging 1-2 h behind changes in humidity. Live branch movements were also highly correlated with vapor pressure deficit and humidity but went from lagging 1-2 h behind changes in these abiotic conditions in summer to being nearly in sync in winter. We believe that this is the first study that (1) documents diurnal branch movements in creosote, (2) differentiates between the movements of live and dead branches, and (3) relates environmental data to these movements. We hope these findings encourage other researchers to more closely examine imagery from their sites for evidence of branch movements, which may provide deeper insights into water and solute movements in plants and physiological responses to water stress. LA - English DB - MTMT ER - TY - JOUR AU - Jin, Shichao AU - Su, Yanjun AU - Zhang, Yongguang AU - Song, Shilin AU - Li, Qing AU - Liu, Zhonghua AU - Ma, Qin AU - Ge, Yan AU - Liu, LingLi AU - Ding, Yanfeng AU - Baret, Frederic AU - Guo, Qinghua TI - Exploring Seasonal and Circadian Rhythms in Structural Traits of Field Maize from LiDAR Time Series JF - Plant Phenomics VL - 2021 PY - 2021 PG - 15 SN - 2643-6515 DO - 10.34133/2021/9895241 UR - https://m2.mtmt.hu/api/publication/33345614 ID - 33345614 AB - Plant growth rhythm in structural traits is important for better understanding plant response to the ever-changing environment. Terrestrial laser scanning (TLS) is a well-suited tool to study structural rhythm under field conditions. Recent studies have used TLS to describe the structural rhythm of trees, but no consistent patterns have been drawn. Meanwhile, whether TLS can capture structural rhythm in crops is unclear. Here, we aim to explore the seasonal and circadian rhythms in maize structural traits at both the plant and leaf levels from time-series TLS. The seasonal rhythm was studied using TLS data collected at four key growth periods, including jointing, bell-mouthed, heading, and maturity periods. Circadian rhythms were explored by using TLS data acquired around every 2 hours in a whole day under standard and cold stress conditions. Results showed that TLS can quantify the seasonal and circadian rhythm in structural traits at both plant and leaf levels. (1) Leaf inclination angle decreased significantly between the jointing stage and bell-mouthed stage. Leaf azimuth was stable after the jointing stage. (2) Some individual-level structural rhythms (e.g., azimuth and projected leaf area/PLA) were consistent with leaf-level structural rhythms. (3) The circadian rhythms of some traits (e.g., PLA) were not consistent under standard and cold stress conditions. (4) Environmental factors showed better correlations with leaf traits under cold stress than standard conditions. Temperature was the most important factor that significantly correlated with all leaf traits except leaf azimuth. This study highlights the potential of time-series TLS in studying outdoor agricultural chronobiology. LA - English DB - MTMT ER - TY - JOUR AU - Tian, Shihao AU - Zheng, Guang AU - Eitel, Jan U. AU - Zhang, Qian TI - A Lidar-Based 3-D Photosynthetically Active Radiation Model Reveals the Spatiotemporal Variations of Forest Sunlit and Shaded Leaves JF - REMOTE SENSING J2 - REMOTE SENS-BASEL VL - 13 PY - 2021 IS - 5 PG - 26 SN - 2072-4292 DO - 10.3390/rs13051002 UR - https://m2.mtmt.hu/api/publication/32328961 ID - 32328961 AB - Accurately identifying sunlit and shaded leaves using process-based ecological models can improve the simulation accuracy of forest photosynthetic rates and potential carbon sequestration capacity. However, it is still challenging to characterize their three dimensional (3-D) spatiotemporal distributions due to the complex structure. In this study, we developed a light detection and ranging (lidar)-based approach to map the spatiotemporal distribution patterns of photosynthetically active radiation (PAR) and sunlit and shaded leaves within forest canopies. By using both terrestrial laser scanning (TLS) and unmanned aerial vehicle-based lidar system (UAV-LS), we analyzed the influences of different scanning geometries and associated point densities on the separation of sunlit and shaded leaves. Moreover, we further investigated the effects of woody materials and penumbra sizes on identifying sunlit and shaded leaves by separating the foliage and woody materials and estimating the penumbras of sunlit leaves. Our results showed that: (1) The proposed lidar-based PAR model could well capture the variations of field-based pyranometer measurements using fused point data by combining UAV-LS and TLS data (mean R-square = 0.88, mean root mean square error (RMSE) = 155.5 mu mol center dot m(-2)center dot s(-1), p < 0.01). The separate UAV-LS and TLS-based fractions of sunlit leaves were averagely overestimated by 34.3% and 21.6% when compared to the fused point data due to their different coverages and comprehensiveness. (2) The woody materials showed different effects on sunlit leaf fraction estimations for forest overstory and understory due to the variations of solar zenith angle and tree spatial distribution patterns. The most noticeable differences (i.e., -36.4%) between the sunlit leaf fraction before and after removing woody materials were observed around noon, with a small solar zenith angle and low-density forest stand. (3) The penumbra effects were seen to increase the sunlit leaf fraction in the lower canopy by introducing direct solar radiation, and it should be considered when using 3-D structural information from lidar to identify sunlit and shaded leaves. LA - English DB - MTMT ER - TY - JOUR AU - Bakay, Ladislav AU - Moravčík, Ľuboš TI - Quantification of Circadian Movement of Small-Leaved Lime (Tilia cordata Mill.) Saplings With Short Interval Terrestrial Laser Scanning JF - FRONTIERS IN PLANT SCIENCE J2 - FRONT PLANT SCI VL - 11 PY - 2020 SN - 1664-462X DO - 10.3389/fpls.2020.00984 UR - https://m2.mtmt.hu/api/publication/31370531 ID - 31370531 N1 - Funding Agency and Grant Number: AgroBioTech Research Centre; project Building "AgroBioTech" Research Centre [ITMS 26220220180] Funding text: This research was supported by AgroBioTech Research Centre built in accordance with the project Building "AgroBioTech" Research Centre ITMS 26220220180. LA - English DB - MTMT ER - TY - JOUR AU - Campos, M. AU - Litkey, P. AU - Wang, Y. AU - Chen, Y. AU - Hyyti, H. AU - Hyyppä, J. AU - Puttonen, E. TI - A TERRESTRIAL LASER SCANNING MEASUREMENT STATION TO MONITOR LONG-TERM STRUCTURAL DYNAMICS IN A BOREAL FOREST JF - INTERNATIONAL ARCHIVES OF PHOTOGRAMMETRY AND REMOTE SENSING (2002-) J2 - ISPRS (2002-) VL - XLIII-B1-2020 PY - 2020 SP - 27 EP - 31 PG - 5 SN - 1682-1750 DO - 10.5194/isprs-archives-XLIII-B1-2020-27-2020 UR - https://m2.mtmt.hu/api/publication/31622952 ID - 31622952 LA - English DB - MTMT ER - TY - JOUR AU - Damiano, Jean-Pierre TI - Les végétaux doués d'intelligence ? Aspects historiques et philosophiques. Eléments de synthèse des capacités cognitives et des mécanismes. Nouvelles approches biorobotiques JF - IESF-CA Bulletin J2 - IESF-CA Bulletin VL - 2020 PY - 2020 IS - 3 SP - 10 EP - 25 PG - 16 UR - https://m2.mtmt.hu/api/publication/31622953 ID - 31622953 LA - French DB - MTMT ER - TY - JOUR AU - Slavík, Martin AU - Kuželka, Karel AU - Modlinger, Roman AU - Tomášková, Ivana AU - Surový, Peter TI - UAV Laser Scans Allow Detection of Morphological Changes in Tree Canopy JF - REMOTE SENSING J2 - REMOTE SENS-BASEL VL - 12 PY - 2020 IS - 22 PG - 15 SN - 2072-4292 DO - 10.3390/rs12223829 UR - https://m2.mtmt.hu/api/publication/31679763 ID - 31679763 LA - English DB - MTMT ER - TY - JOUR AU - Stupariu, Mihai-Sorin AU - Pleșoianu, Alin-Ionuț AU - Pătru-Stupariu, Ileana AU - Fürst, Christine TI - A Method for Tree Detection Based on Similarity with Geometric Shapes of 3D Geospatial Data JF - ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION J2 - ISPRS INT J GEO-INFORMATION VL - 9 PY - 2020 IS - 5 SN - 2220-9964 DO - 10.3390/ijgi9050298 UR - https://m2.mtmt.hu/api/publication/31330776 ID - 31330776 LA - English DB - MTMT ER - TY - JOUR AU - Puttonen, Eetu AU - Lehtomäki, Matti AU - Litkey, Paula AU - Näsi, Roope AU - Feng, Ziyi AU - Liang, Xinlian AU - Wittke, Samantha AU - Pandžić, Miloš AU - Hakala, Teemu AU - Karjalainen, Mika AU - Pfeifer, Norbert TI - A Clustering Framework for Monitoring Circadian Rhythm in Structural Dynamics in Plants From Terrestrial Laser Scanning Time Series JF - FRONTIERS IN PLANT SCIENCE J2 - FRONT PLANT SCI VL - 10 PY - 2019 PG - 14 SN - 1664-462X DO - 10.3389/fpls.2019.00486 UR - https://m2.mtmt.hu/api/publication/30644730 ID - 30644730 LA - English DB - MTMT ER - TY - BOOK ED - Walker, Gina TI - Think like a tree: the natural principles guide to lift PB - Swarkestone Press CY - Swarkestone PY - 2019 SP - 249 SN - 9781916014404 UR - https://m2.mtmt.hu/api/publication/30923669 ID - 30923669 LA - English DB - MTMT ER - TY - JOUR AU - Juhász, Attila AU - Neuberger, Hajnalka TI - Automatic identification of bomb craters and their potential location JF - MITTEILUNGEN DER OSTERREICHISCHEN GEOGRAPHISCHEN GESELLSCHAFT J2 - MITT OSTERR GEOGR G VL - 160 PY - 2018 SP - 241 EP - 258 PG - 18 SN - 0029-9138 DO - 10.1553/moegg160s241 UR - https://m2.mtmt.hu/api/publication/3326351 ID - 3326351 AB - LiDAR (Light Detection and Ranging) data are generally used for archaeological, geographical, and geological purposes. In modern age archaeology, military object identification and mapping are used to reconstruct World War II defense lines. This article argues that this reconstruction process can be supported by detecting and identifying the location of bomb craters using LiDAR data. Because of the large amount of such relevant data and the issues associated with their management, there is a need to automate the entire process of detection and identification. This article presents and discusses the methods that have been developed for this automation. These methods could also be applied for different research objectives using LiDAR data, such as to detect the location of burial mounds and to carry out mapping of doline formations. LA - English DB - MTMT ER - TY - JOUR AU - Minorsky, Peter V TI - The functions of foliar nyctinasty: a review and hypothesis JF - BIOLOGICAL REVIEWS J2 - BIOL REV VL - 1 PY - 2018 SP - 1 EP - 14 PG - 14 SN - 1464-7931 UR - https://m2.mtmt.hu/api/publication/27465434 ID - 27465434 LA - English DB - MTMT ER - TY - GEN AU - MTA, null TI - Nem minden fa alszik, de mindegyiknek van pulzusa PY - 2018 PG - 1 UR - https://m2.mtmt.hu/api/publication/27442319 ID - 27442319 LA - English DB - MTMT ER - TY - GEN AU - Raúl, Mannise AU - Valentina, Navarrete TI - Cíentificos descubren que los árboles también tienen corazón PY - 2018 PG - 1 UR - https://m2.mtmt.hu/api/publication/27442309 ID - 27442309 LA - English DB - MTMT ER - TY - JOUR AU - Z, Koma AU - M, Rutzinger AU - M, Bremer TI - Automated Segmentation of Leaves From Deciduous Trees in Terrestrial Laser Scanning Point Clouds JF - IEEE GEOSCIENCE AND REMOTE SENSING LETTERS J2 - IEEE GEOSCI REMOTE S VL - PP PY - 2018 IS - 99 SP - 1 EP - 5 PG - 5 SN - 1545-598X DO - 10.1109/LGRS.2018.2841429 UR - https://m2.mtmt.hu/api/publication/27454825 ID - 27454825 N1 - Import hibák 2019-04-25 13:23 {"JA":"IEEE Geoscience and Remote Sensing Letters"} Y1 LA - English DB - MTMT ER - TY - JOUR AU - Zlinszky, András AU - Barfod, A TI - Short interval overnight laser scanning suggest sub-circadian periodicity of tree turgor JF - PLANT SIGNALING AND BEHAVIOR J2 - PLANT SIGNAL BEHAV VL - 13 PY - 2018 IS - 2 SN - 1559-2316 DO - 10.1080/15592324.2018.1439655 UR - https://m2.mtmt.hu/api/publication/3367960 ID - 3367960 AB - A recent study by Zlinszky etal.,(1) uses high-resolution terrestrial laser scanning to investigate the variability of overnight movement of leaves and branches in vascular plants. This study finds among others that the investigated plants show periodic movements of around one centimetre in amplitude and 2-6hour periodicity. Sub-circadian process dynamics of plants were so far not in focus of research, but here we compare the findings with other published cases of short-term periodicity in leaf turgor, sap flow and especially trunk diameter. Several authors have noted overnight variations in these parameters within periods of several hours and in absence of environmental changes with similar dynamics. We revisit the unknown questions of short-term plant movement and make a suggestion for future research. LA - English DB - MTMT ER - TY - JOUR AU - Zlinszky, Andras AU - Barfod, Anders TI - Short interval overnight laser scanning suggests sub-circadian periodicity of tree turgor JF - PLANT SIGNALING AND BEHAVIOR J2 - PLANT SIGNAL BEHAV VL - 13 PY - 2018 IS - 2 PG - 3 SN - 1559-2316 DO - 10.1080/15592324.2018.1441656 UR - https://m2.mtmt.hu/api/publication/27350677 ID - 27350677 LA - English DB - MTMT ER -