Results 91 to 100 of about 136,882 (250)

Comparing convolutional neural network and random forest for benthic habitat mapping in Apollo Marine Park

Remote Sensing in Ecology and Conservation, EarlyView.
A comparison of Convolutional Neural Network (CNN) and Random Forest (RF) model predictions of benthic habitats within Apollo Marine Park. The CNN (left) and RF (right) classification maps show the spatial distribution of three habitat types: high energy circalittoral rock with seabed‐covering sponges, low complexity circalittoral rock with non‐crowded
Henry Simmons, Dang Nguyen, Benjamin Misiuk, Daniel Ierodiaconou, Sunil Gupta, Oli Dalby, Mary Young   +6 more
wiley   +1 more source

Sedimentological characterization of Antarctic moraines using UAVs and Structure-from-Motion photogrammetry [PDF]

, 2015
In glacial environments particle-size analysis of moraines provides insights into clast origin, transport history, depositional mechanism and processes of reworking.
Matthew J. Westoby, Stuart A. Dunning, John Woodward, Andrew S. Hein, Shasta M. Marrero, Kate Winter, David E. Sugden, Hodge, Dugdale, Friedman, Furukawa, Detert, Detert, Agisoft, McLaren, Pitkänen, Adams, Fuller, Fehr, Kääb   +19 more
core   +2 more sources

Improving forest age estimation to understand subtropical forest regrowth dynamics using deep learning image segmentation of time‐series historical aerial photographs

Remote Sensing in Ecology and Conservation, EarlyView.
Accurately estimating forest age is key to understanding how forests recover and evaluating restoration success. We developed a two‐step deep learning approach using historical greyscale aerial photographs to map forest age at fine spatial scales. By combining a pre‐trained model with localized fine‐tuning, our U‐Net + ResNet50 architecture achieved ...
Ying Ki Law, Yi‐Fei Gu, Shuwen Liu, Guangqin Song, Aland H. Y. Chan, Cham Man Tse, Zhonghua Liu, Martha J. Ledger, Billy C. H. Hau, Sawaid Abbas, Jin Wu   +10 more
wiley   +1 more source

3D Gaussian Splatting aided Localization for Large and Complex Indoor-Environments [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The field of visual localization has been researched for several decades and has meanwhile found many practical applications. Despite the strong progress in this field, there are still challenging situations in which established methods fail.
V. Ress, J. Meyer, J. Meyer, W. Zhang, D. Skuddis, U. Soergel, N. Haala   +6 more
doaj   +1 more source

Validation of aerial photogrammetry methods to measure body size, condition and mass in small cetaceans. [PDF]

J Physiol
Abstract figure legend Unoccupied aerial vehicle (UAV)‐based photogrammetry provides measurements equivalent to traditional hand measurements in bottlenose dolphins. Mass estimates derived from UAV measurements closely match the true body mass of live individuals.
Cicciarella R, Willems EP, Markham B, Bizzozzero MR, Phillips W, Allen SJ, Krützen M, Christiansen F.   +7 more
europepmc   +2 more sources

Geometric potential of cartosat-1 stereo imagery [PDF]

, 2008
Cartosat-1 satellite, launched by Department of Space (DOS), Government of India, is dedicated to stereo viewing for large scale mapping and terrain modelling applications.
Colosimo, Gabriele, Crespi, Mattia Giovanni, Fratarcangeli, Francesca, Giannone, Francesca, Jacobsen, Karsten, Pieralice, Francesca   +5 more
core  

Impact of parameterization in multiple acoustic index comparisons: practical cases in terrestrial and underwater soundscapes

Remote Sensing in Ecology and Conservation, EarlyView.
Parameter choices in acoustic analyses (sampling frequency, FFT size and window overlap) strongly influence multivariate soundscape separation. Using terrestrial and coral reef recordings, we show that these settings can exaggerate or mask ecological differences, emphasizing the need for parameter sensitivity testing and transparent reporting in ...
Juan C. Azofeifa‐Solano, Miles J. G. Parsons, James Kemp, Rohan M. Brooker, Robert D. McCauley, Shyam Madhusudhana, Mathew Wyatt, Stephen D. Simpson, Christine Erbe   +8 more
wiley   +1 more source

Forest in situ observations using unmanned aerial vehicle as an alternative of terrestrial measurements

Forest Ecosystems, 2019
Background Lately, terrestrial point clouds have drawn attention as a new data source for in situ forest investigations. So far, terrestrial laser scanning (TLS) has the highest data quality among all terrestrial point cloud data in terms of geometric ...
Xinlian Liang, Yunsheng Wang, Jiri Pyörälä, Matti Lehtomäki, Xiaowei Yu, Harri Kaartinen, Antero Kukko, Eija Honkavaara, Aimad E. I. Issaoui, Olli Nevalainen, Matti Vaaja, Juho-Pekka Virtanen, Masato Katoh, Songqiu Deng   +13 more
doaj   +1 more source

AERIAL PHOTOGRAPHY AND PARCEL MAPPING FOR IMMOVABLE PROPERTY REGISTRATION IN ALBANIA [PDF]

Planimetric map production is a basic graphic documentation element of the Immovable Property Registration System in Albania and is one of the main objectives of the Land Market Action Plan.
Gjika, Maksimiljan, Leka, Edmond
core   +1 more source

On the compatibility of single‐scan terrestrial LiDAR with digital photogrammetry and field inventory metrics of vegetation structure in forest and agroforestry landscapes

Remote Sensing in Ecology and Conservation, EarlyView.
The single‐scan approach to terrestrial laser scanning (TLS) and the self‐terrain‐normalized form of drone‐based digital aerial photogrammetry (DAP) offer practical options for rapid assessment of the vegetation structure in tropical landscapes.
Magnus Onyiriagwu, Nereoh Leley, Caleb W. T. Ngaba, Anthony Macharia, Henry Muchiri, Abdalla Kisiwa, Martin Ehbrecht, Delphine Clara Zemp   +7 more
wiley   +1 more source