Results 11 to 20 of about 130,668 (250)

Novel low-cost mobile mapping systems for forest inventories as terrestrial laser scanning alternatives

International Journal of Applied Earth Observations and Geoinformation, 2021
The development of devices capable of generating three-dimensional (3D) point clouds of the forest is flourishing in recent years. It is possible to generate relatively dense and accurate 3D data not only by terrestrial laser scanning but also mobile ...
Martin Mokroš, Tomáš Mikita, Arunima Singh, Julián Tomaštík, Juliána Chudá, Piotr Wężyk, Karel Kuželka, Peter Surový, Martin Klimánek, Karolina Zięba-Kulawik, Rogerio Bobrowski, Xinlian Liang   +11 more
doaj   +3 more sources

Quantification of Forest Regeneration on Forest Inventory Sample Plots Using Point Clouds from Personal Laser Scanning

Remote Sensing
The presence of sufficient natural regeneration in mature forests is regarded as a pivotal criterion for their future stability, ensuring seamless reforestation following final harvesting operations or forest calamities. Consequently, forest regeneration
Sarah Witzmann, Christoph Gollob, Ralf Kraßnitzer, Tim Ritter, Andreas Tockner, Lukas Moik, Valentin Sarkleti, Tobias Ofner-Graff, Helmut Schume, Arne Nothdurft   +9 more
doaj   +2 more sources

Structural Health Monitoring of Bridges with Personal Laser Scanning: Segment-based Analysis of systematic Point Cloud Deformations [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Bridge structures can be surveyed using a number of different methods. Established are image-based methods using structure from motion by an unmanned aerial vehicle (UAV), terrestrial laser scanning (TLS), or a combination of both methods.
R. Blaskow, H.-G. Maas
doaj   +3 more sources

Influence of Vegetation Period on Personal Laser Scanning Accuracy for Tree Attribute Estimation in Pedunculate Oak and European Beech Forests [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Estimating the main tree attributes using hand-held personal laser scanning (PLS) instruments has been an ongoing area of research. So far, the vast majority of the studies have been conducted, during non-vegetation (leaf-off) period when the scanning ...
A. Kokeza, D. Medak, F. Domazetović, I. Marić, A. Šiljeg, A. Seitz, I. Balenović   +6 more
doaj   +2 more sources

Optimizing line-plot size for personal laser scanning: modeling distance-dependent tree detection probability along transects

iForest - Biogeosciences and Forestry
Personal laser scanning (PLS) systems are gaining popularity in forest inventory research and practice. They are primarily utilized on circular or compact rectangular sample plots to mitigate potential instrument drift and enhance tree detection rates ...
Ritter T, Tockner A, Krassnitzer R, Witzmann S, Gollob C, Nothdurft A   +5 more
doaj   +2 more sources

Forest Data Collection Using Terrestrial Image-Based Point Clouds From a Handheld Camera Compared to Terrestrial and Personal Laser Scanning

IEEE Transactions on Geoscience and Remote Sensing, 2015
Stereo images have long been the main practical data source for the high-accuracy retrieval of 3-D information over large areas. However, stereoscopy has been surpassed by laser scanning (LS) techniques in recent years, particularly in forested areas, because the reflection of laser points from object surfaces directly provides 3-D geometric features ...
Kukko Antero, Wang Yunsheng, Kukko Antero, Jaakkola Anttoni, Honkavaara Eija, Kaartinen Harri, Liu Jingbin, Hyyppä Juha, Liang Xinlian, Wang Y   +9 more
openaire   +5 more sources

ANALYSIS OF POSSIBLE GEODETIC APPROACHES FOR 3D MODEL CREATION IN BIM [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
The topic of this paper is the description and analysis of technologies for generating a geometric basis for BIM. The main element is an analysis of the capabilities of mobile laser scanning and the outputs of this method compared to other methods.
K. Pavelka jr., L. Běloch, K. Pavelka
doaj   +1 more source

SPATIAL 3D DOCUMENTATION OF HISTORICAL MINING REMNANTS IN FORESTED AREA IN THE ERZGEBIRGE/KRUŠNOHOŘÍ MINING REGION UNESCO SITE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
This contribution deals in the possibilities of 3D documentation of historical mining relicts hidden in the forest. On the Czech – German border, in the Ore Mountains, several historical mining relicts are located there. There are interesting underground
K. Pavelka, E. Matoušková, K. Pavelka jr., J. Pacina, J. Pacina   +4 more
doaj   +1 more source

Measurement of Forest Inventory Parameters with Apple iPad Pro and Integrated LiDAR Technology

Remote Sensing, 2021
The estimation of single tree and complete stand information is one of the central tasks of forest inventory. In recent years, automatic algorithms have been successfully developed for the detection and measurement of trees with laser scanning technology.
Christoph Gollob, Tim Ritter, Ralf Kraßnitzer, Andreas Tockner, Arne Nothdurft   +4 more
doaj   +1 more source

Assessment of Close-Range Remote Sensing Methods for DTM Estimation in a Lowland Deciduous Forest

Remote Sensing, 2021
Digital terrain models (DTMs) are important for a variety of applications in geosciences as a valuable information source in forest management planning, forest inventory, hydrology, etc.
Luka Jurjević, Mateo Gašparović, Xinlian Liang, Ivan Balenović   +3 more
doaj   +1 more source