@article{MTMT:34624595,
	title = {Nonrigid Point Cloud Registration Using Piecewise Tricubic Polynomials as Transformation Model},
	url = {https://m2.mtmt.hu/api/publication/34624595},
	author = {Glira, Philipp and Weidinger, Christoph and Otepka-Schremmer, Johannes and Ressl, Camillo and Pfeifer, Norbert and Haberler-Weber, Michaela},
	doi = {10.3390/rs15225348},
	journal-iso = {REMOTE SENS-BASEL},
	journal = {REMOTE SENSING},
	volume = {15},
	unique-id = {34624595},
	keywords = {TRANSFORMATION; LIDAR; Point cloud registration; Iterative Closest Point},
	year = {2023},
	eissn = {2072-4292},
	orcid-numbers = {Glira, Philipp/0000-0002-7698-8479; Weidinger, Christoph/0009-0007-0655-6535; Pfeifer, Norbert/0000-0002-2348-7929}
}

@article{MTMT:33345613,
	title = {Understanding the dynamic properties of trees using the motions constructed from multi-beam flash light detection and ranging measurements},
	url = {https://m2.mtmt.hu/api/publication/33345613},
	author = {Chau, Wai Yi and Loong, Cheng Ning and Wang, Yu-Hsing and Chiu, Siu-Wai and Tan, Tun Jian and Wu, Jimmy and Leung, Mei Ling and Tan, Pin Siang and Ooi, Ghee Leng},
	doi = {10.1098/rsif.2022.0319},
	journal-iso = {J R SOC INTERFACE},
	journal = {JOURNAL OF THE ROYAL SOCIETY INTERFACE},
	volume = {19},
	unique-id = {33345613},
	issn = {1742-5689},
	abstract = {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.},
	keywords = {Natural frequencies; Dynamic properties; Laser scanning; tree architecture; tree vibration; damping ratios},
	year = {2022},
	eissn = {1742-5662}
}

@article{MTMT:32870339,
	title = {Tree Water Status Affects Tree Branch Position},
	url = {https://m2.mtmt.hu/api/publication/32870339},
	author = {Junttila, Samuli and Campos, Mariana and Hölttä, Teemu and Lindfors, Lauri and El Issaoui, Aimad and Vastaranta, Mikko and Hyyppä, Hannu and Puttonen, Eetu},
	doi = {10.3390/f13050728},
	journal-iso = {FORESTS},
	journal = {FORESTS},
	volume = {13},
	unique-id = {32870339},
	issn = {1999-4907},
	year = {2022},
	eissn = {1999-4907},
	pages = {728},
	orcid-numbers = {Junttila, Samuli/0000-0001-8276-9259; Campos, Mariana/0000-0003-3430-7521; Vastaranta, Mikko/0000-0001-6552-9122; Hyyppä, Hannu/0000-0003-2487-3159; Puttonen, Eetu/0000-0003-0985-4443}
}

@article{MTMT:32816210,
	title = {PlantMove: A tool for quantifying motion fields of plant movements from point cloud time series},
	url = {https://m2.mtmt.hu/api/publication/32816210},
	author = {Wang, Di and Puttonen, Eetu and Casella, Eric},
	doi = {10.1016/j.jag.2022.102781},
	journal-iso = {INT J APPL EARTH OBS},
	journal = {INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION},
	volume = {110},
	unique-id = {32816210},
	issn = {1569-8432},
	year = {2022},
	eissn = {1872-826X}
}

@article{MTMT:31812559,
	title = {A Long-Term Terrestrial Laser Scanning Measurement Station to Continuously Monitor Structural and Phenological Dynamics of Boreal Forest Canopy},
	url = {https://m2.mtmt.hu/api/publication/31812559},
	author = {Campos, Mariana Batista and Litkey, Paula and Wang, Yunsheng and Chen, Yuwei and Hyyti, Heikki and Hyyppä, Juha and Puttonen, Eetu},
	doi = {10.3389/fpls.2020.606752},
	journal-iso = {FRONT PLANT SCI},
	journal = {FRONTIERS IN PLANT SCIENCE},
	volume = {11},
	unique-id = {31812559},
	issn = {1664-462X},
	year = {2021},
	eissn = {1664-462X}
}

@article{MTMT:32399366,
	title = {Automated replacement scheme of DC transformer bushing based on laser scanning profile: Design and experiment},
	url = {https://m2.mtmt.hu/api/publication/32399366},
	author = {Du, Xiaopeng and Xiao, Aiping and Yue, Hongqiang},
	doi = {10.1016/j.epsr.2020.106967},
	journal-iso = {ELECTR POW SYST RES},
	journal = {ELECTRIC POWER SYSTEMS RESEARCH},
	volume = {192},
	unique-id = {32399366},
	issn = {0378-7796},
	abstract = {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.},
	keywords = {Initial value; UHVDC; Circle fitting; Straight-line fitting; Cylinder fitting; Laser profile},
	year = {2021},
	eissn = {1873-2046}
}

@article{MTMT:32328829,
	title = {Watching plants' dance: movements of live and dead branches linked to atmospheric water demand},
	url = {https://m2.mtmt.hu/api/publication/32328829},
	author = {Hallmark, Alesia J. and Maurer, Gregory E. and Pangle, Robert E. and Litvak, Marcy E.},
	doi = {10.1002/ecs2.3705},
	journal-iso = {ECOSPHERE},
	journal = {ECOSPHERE},
	volume = {12},
	unique-id = {32328829},
	issn = {2150-8925},
	abstract = {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.},
	keywords = {canopy; sensor network; time lapse; Long-Term Ecological Research; plant movement; Larrea tridentata; repeat digital photography},
	year = {2021},
	eissn = {2150-8925},
	orcid-numbers = {Maurer, Gregory E./0000-0002-3007-8058}
}

@article{MTMT:33345614,
	title = {Exploring Seasonal and Circadian Rhythms in Structural Traits of Field Maize from LiDAR Time Series},
	url = {https://m2.mtmt.hu/api/publication/33345614},
	author = {Jin, Shichao and Su, Yanjun and Zhang, Yongguang and Song, Shilin and Li, Qing and Liu, Zhonghua and Ma, Qin and Ge, Yan and Liu, LingLi and Ding, Yanfeng and Baret, Frederic and Guo, Qinghua},
	doi = {10.34133/2021/9895241},
	journal = {Plant Phenomics},
	volume = {2021},
	unique-id = {33345614},
	issn = {2643-6515},
	abstract = {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.},
	year = {2021},
	eissn = {2643-6515},
	orcid-numbers = {Zhang, Yongguang/0000-0001-8286-300X}
}

@article{MTMT:32328961,
	title = {A Lidar-Based 3-D Photosynthetically Active Radiation Model Reveals the Spatiotemporal Variations of Forest Sunlit and Shaded Leaves},
	url = {https://m2.mtmt.hu/api/publication/32328961},
	author = {Tian, Shihao and Zheng, Guang and Eitel, Jan U. and Zhang, Qian},
	doi = {10.3390/rs13051002},
	journal-iso = {REMOTE SENS-BASEL},
	journal = {REMOTE SENSING},
	volume = {13},
	unique-id = {32328961},
	abstract = {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.},
	keywords = {sunlit and shaded leaves; Photosynthetically Active Radiation (PAR); point density; forest woody components},
	year = {2021},
	eissn = {2072-4292}
}

@article{MTMT:31370531,
	title = {Quantification of Circadian Movement of Small-Leaved Lime (Tilia cordata Mill.) Saplings With Short Interval Terrestrial Laser Scanning},
	url = {https://m2.mtmt.hu/api/publication/31370531},
	author = {Bakay, Ladislav and Moravčík, Ľuboš},
	doi = {10.3389/fpls.2020.00984},
	journal-iso = {FRONT PLANT SCI},
	journal = {FRONTIERS IN PLANT SCIENCE},
	volume = {11},
	unique-id = {31370531},
	issn = {1664-462X},
	year = {2020},
	eissn = {1664-462X}
}

@article{MTMT:31622952,
	title = {A TERRESTRIAL LASER SCANNING MEASUREMENT STATION TO MONITOR LONG-TERM STRUCTURAL DYNAMICS IN A BOREAL FOREST},
	url = {https://m2.mtmt.hu/api/publication/31622952},
	author = {Campos, M. and Litkey, P. and Wang, Y. and Chen, Y. and Hyyti, H. and Hyyppä, J. and Puttonen, E.},
	doi = {10.5194/isprs-archives-XLIII-B1-2020-27-2020},
	journal-iso = {ISPRS (2002-)},
	journal = {INTERNATIONAL ARCHIVES OF PHOTOGRAMMETRY AND REMOTE SENSING (2002-)},
	volume = {XLIII-B1-2020},
	unique-id = {31622952},
	issn = {1682-1750},
	year = {2020},
	eissn = {2194-9034},
	pages = {27-31}
}

@article{MTMT:31622953,
	title = {Les végétaux doués d'intelligence ? Aspects historiques et philosophiques. Eléments de synthèse des capacités cognitives et des mécanismes. Nouvelles approches biorobotiques},
	url = {https://m2.mtmt.hu/api/publication/31622953},
	author = {Damiano, Jean-Pierre},
	journal-iso = {IESF-CA Bulletin},
	journal = {IESF-CA Bulletin},
	volume = {2020},
	unique-id = {31622953},
	year = {2020},
	pages = {10-25}
}

@article{MTMT:31679763,
	title = {UAV Laser Scans Allow Detection of Morphological Changes in Tree Canopy},
	url = {https://m2.mtmt.hu/api/publication/31679763},
	author = {Slavík, Martin and Kuželka, Karel and Modlinger, Roman and Tomášková, Ivana and Surový, Peter},
	doi = {10.3390/rs12223829},
	journal-iso = {REMOTE SENS-BASEL},
	journal = {REMOTE SENSING},
	volume = {12},
	unique-id = {31679763},
	year = {2020},
	eissn = {2072-4292}
}

@article{MTMT:31330776,
	title = {A Method for Tree Detection Based on Similarity with Geometric Shapes of 3D Geospatial Data},
	url = {https://m2.mtmt.hu/api/publication/31330776},
	author = {Stupariu, Mihai-Sorin and Pleșoianu, Alin-Ionuț and Pătru-Stupariu, Ileana and Fürst, Christine},
	doi = {10.3390/ijgi9050298},
	journal-iso = {ISPRS INT J GEO-INFORMATION},
	journal = {ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION},
	volume = {9},
	unique-id = {31330776},
	year = {2020},
	eissn = {2220-9964}
}

@article{MTMT:30644730,
	title = {A Clustering Framework for Monitoring Circadian Rhythm in Structural Dynamics in Plants From Terrestrial Laser Scanning Time Series},
	url = {https://m2.mtmt.hu/api/publication/30644730},
	author = {Puttonen, Eetu and Lehtomäki, Matti and Litkey, Paula and Näsi, Roope and Feng, Ziyi and Liang, Xinlian and Wittke, Samantha and Pandžić, Miloš and Hakala, Teemu and Karjalainen, Mika and Pfeifer, Norbert},
	doi = {10.3389/fpls.2019.00486},
	journal-iso = {FRONT PLANT SCI},
	journal = {FRONTIERS IN PLANT SCIENCE},
	volume = {10},
	unique-id = {30644730},
	issn = {1664-462X},
	year = {2019},
	eissn = {1664-462X}
}

@book{MTMT:30923669,
	title = {Think like a tree: the natural principles guide to lift},
	url = {https://m2.mtmt.hu/api/publication/30923669},
	isbn = {9781916014404},
	editor = {Walker, Gina},
	publisher = {Swarkestone Press},
	unique-id = {30923669},
	year = {2019}
}

@article{MTMT:3326351,
	title = {Automatic identification of bomb craters and their potential location},
	url = {https://m2.mtmt.hu/api/publication/3326351},
	author = {Juhász, Attila and Neuberger, Hajnalka},
	doi = {10.1553/moegg160s241},
	journal-iso = {MITT OSTERR GEOGR G},
	journal = {MITTEILUNGEN DER OSTERREICHISCHEN GEOGRAPHISCHEN GESELLSCHAFT},
	volume = {160},
	unique-id = {3326351},
	issn = {0029-9138},
	abstract = {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.},
	keywords = {Image processing; GIS; LIDAR; bomb craters; military object reconstruction; modern age archaeology},
	year = {2018},
	eissn = {0029-9138},
	pages = {241-258},
	orcid-numbers = {Juhász, Attila/0000-0002-4605-7737; Neuberger, Hajnalka/0000-0002-3230-4979}
}

@article{MTMT:27465434,
	title = {The functions of foliar nyctinasty: a review and hypothesis},
	url = {https://m2.mtmt.hu/api/publication/27465434},
	author = {Minorsky, Peter V},
	journal-iso = {BIOL REV},
	journal = {BIOLOGICAL REVIEWS},
	volume = {1},
	unique-id = {27465434},
	issn = {1464-7931},
	year = {2018},
	eissn = {1469-185X},
	pages = {1-14}
}

@misc{MTMT:27442319,
	title = {Nem minden fa alszik, de mindegyiknek van pulzusa},
	url = {https://m2.mtmt.hu/api/publication/27442319},
	author = {MTA},
	unique-id = {27442319},
	year = {2018}
}

@misc{MTMT:27442309,
	title = {Cíentificos descubren que los árboles también tienen corazón},
	url = {https://m2.mtmt.hu/api/publication/27442309},
	author = {Raúl, Mannise and Valentina, Navarrete},
	unique-id = {27442309},
	year = {2018}
}

@article{MTMT:27454825,
	title = {Automated Segmentation of Leaves From Deciduous Trees in Terrestrial Laser Scanning Point Clouds},
	url = {https://m2.mtmt.hu/api/publication/27454825},
	author = {Z, Koma and M, Rutzinger and M, Bremer},
	doi = {10.1109/LGRS.2018.2841429},
	journal-iso = {IEEE GEOSCI REMOTE S},
	journal = {IEEE GEOSCIENCE AND REMOTE SENSING LETTERS},
	volume = {PP},
	unique-id = {27454825},
	issn = {1545-598X},
	year = {2018},
	eissn = {1558-0571},
	pages = {1-5}
}

@article{MTMT:3367960,
	title = {Short interval overnight laser scanning suggest sub-circadian periodicity of tree turgor},
	url = {https://m2.mtmt.hu/api/publication/3367960},
	author = {Zlinszky, András and Barfod, A},
	doi = {10.1080/15592324.2018.1439655},
	journal-iso = {PLANT SIGNAL BEHAV},
	journal = {PLANT SIGNALING AND BEHAVIOR},
	volume = {13},
	unique-id = {3367960},
	issn = {1559-2316},
	abstract = {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.},
	year = {2018},
	eissn = {1559-2324},
	orcid-numbers = {Zlinszky, András/0000-0002-9717-0043}
}

@article{MTMT:27350677,
	title = {Short interval overnight laser scanning suggests sub-circadian periodicity of tree turgor},
	url = {https://m2.mtmt.hu/api/publication/27350677},
	author = {Zlinszky, Andras and Barfod, Anders},
	doi = {10.1080/15592324.2018.1441656},
	journal-iso = {PLANT SIGNAL BEHAV},
	journal = {PLANT SIGNALING AND BEHAVIOR},
	volume = {13},
	unique-id = {27350677},
	issn = {1559-2316},
	year = {2018},
	eissn = {1559-2324}
}