Results 31 to 40 of about 55,131,924 (95)

Motion Scalability for Video Coding with Flexible Spatio-Temporal Decompositions [PDF]

, 2007
PhDThe research presented in this thesis aims to extend the scalability range of the wavelet-based video coding systems in order to achieve fully scalable coding with a wide range of available decoding points.
Mrak, Marta
core   +2 more sources

How Much Can We See from a UAV-Mounted Regular Camera? Remote Sensing-Based Estimation of Forest Attributes in South American Native Forests

Remote Sensing, 2021
Data collection from large areas of native forests poses a challenge. The present study aims at assessing the use of UAV for forest inventory on native forests in Southern Chile, and seeks to retrieve both stand and tree level attributes from forest ...
Alejandro Miranda, Germán Catalán, Adison Altamirano, Carlos Zamorano-Elgueta, Manuel Cavieres, Javier Guerra, Blas Mola-Yudego   +6 more
doaj   +1 more source

Understanding gully erosion development through a geomorphological approach

Soil and Water Research
This study aims to identify the gully erosion typology and development using a geomorphological approach. Gully geomorphology features were executed using combined photogrammetric approaches: aerial photography (unmanned aerial vehicle, UAV) and ...
Edwin Maulana, Junun Sartohadi, Muhammad Anggri Setiawan   +2 more
doaj   +1 more source

Classifying Sparse Vegetation in a Proglacial Valley Using UAV Imagery and Random Forest Algorithm

Remote Sensing, 2022
Extreme hydro-meteorological events become an increasing risk in high mountain environments, resulting in erosion events that endanger human infrastructure and life.
Ulrich Zangerl, Stefan Haselberger, Sabine Kraushaar   +2 more
doaj   +1 more source

Seeing motion and apparent motion [PDF]

, 2014
In apparent motion experiments, participants are presented with what is in fact a succession of two brief stationary stimuli at two different locations, but they report an impression of movement. Philosophers have recently debated whether apparent motion
Hoerl, Christoph, Christoph Hoerl
core   +1 more source

Rilievo delle lastre tombali del Camposanto Monumentale di Piazza dei Miracoli a Pisa

Restauro Archeologico, 2017
The research is aimed at a new photogrammetric survey to tackle the restoration of the gravestones of the Pisa’s monumental cemetery. It is situated in “Piazza del Duomo” and it occupies the north side of the extensive complex.
Giovanni Pancani
doaj   +1 more source

Terrestrial Image-Based Point Clouds for Mapping Near-Ground Vegetation Structure: Potential and Limitations

Fire, 2020
Site-specific information concerning fuel hazard characteristics is needed to support wildfire management interventions and fuel hazard reduction programs.
Luke Wallace, Bryan Hally, Samuel Hillman, Simon D. Jones, Karin Reinke   +4 more
doaj   +1 more source

3-D Reconstruction of Rock Samples via Structure-From-Motion for Virtual Reality Applications: A Methodological Proposal

Geosciences, 2022
This article presents a methodological proposal for the three-dimensional reconstruction of rock samples via structure-from-motion. The presented methodological steps aimed to provide a reproducible workflow to create virtual rock samples to be applied ...
Leonardo Campos Inocencio, Maurício Roberto Veronez, Luiz Gonzaga da Silveira, Francisco Manoel Wohnrath Tognoli, Laís Vieira de Souza, Juliano Bonato, Jaqueline Lopes Diniz   +6 more
doaj   +1 more source

Underwater 3D Reconstruction from Video or Still Imagery: Matisse and 3DMetrics Processing and Exploitation Software

Journal of Marine Science and Engineering, 2023
This paper addresses the lack of “push-button” software for optical marine imaging, which currently limits the use of photogrammetric approaches by a wider community.
Aurélien Arnaubec, Maxime Ferrera, Javier Escartín, Marjolaine Matabos, Nuno Gracias, Jan Opderbecke   +5 more
doaj   +1 more source

Structure-From-Motion in 3D Space Using 2D Lidars

Sensors, 2017
This paper presents a novel structure-from-motion methodology using 2D lidars (Light Detection And Ranging). In 3D space, 2D lidars do not provide sufficient information for pose estimation.
Dong-Geol Choi, Yunsu Bok, Jun-Sik Kim, Inwook Shim, In So Kweon   +4 more
doaj   +1 more source