Results 111 to 120 of about 3,194,918 (181)

Direct Georeferencing in Aerial Photogrammetric Mapping

, 2002
Aerial photogrammetric mapping is a well-established industry. Its methods have been evolving progressively but not explosively over many decades. Entrenched, reliable procedures have been developed to overcome pitfalls along the processing chain, allowing the delivery of high quality mapping products.
openaire   +1 more source

Spatiotemporal mapping of agricultural drought using geospatial approach in the East Bale Zone, Ethiopia

Agrosystems, Geosciences &Environment, Volume 9, Issue 4, December 2026.
Abstract Agricultural drought significantly threatens food security, livelihoods, and ecosystem stability, especially in regions prone to drought, such as the East Bale zone. This study investigates the spatial and temporal patterns of agricultural drought over 30 years (1993–2024) by combining meteorological station data with satellite‐derived ...
Murad Hedo Haji, Karuturi Venkata Suryabhagavan   +1 more
wiley   +1 more source

FlexCloud: Direct, Modular Georeferencing and Drift-Correction of Point Cloud Maps

Proceedings of the 11th International Conference on Vehicle Technology and Intelligent Transport Systems
Current software stacks for real-world applications of autonomous driving leverage map information to ensure reliable localization, path planning, and motion prediction. An important field of research is the generation of point cloud maps, referring to the topic of simultaneous localization and mapping (SLAM). As most recent developments do not include
Maximilian Leitenstern, Marko Alten, Christian Bolea-Schaser, Dominik Kulmer, Marcel Weinmann, Markus Lienkamp   +5 more
openaire   +4 more sources

Improvement of Direct Georeferencing using Unmanned Aerial Vehicle Images Acquired at the Maritime

, 2019
Recently, UAV images have been used to monitor various marine accidents and environmental pollution, such as ship accidents, oil spill and red tide detection.
이임평, 유주형, 유형석, 김근용   +3 more
core  

Mapping Documentary Gaps in Plant Occurrence Data Across Brazilian Biomes

Feddes Repertorium, Volume 137, Issue 4, December 2026.
ABSTRACT Open biodiversity records support botanical research, but their spatial coverage and taxonomic representation remain uneven. This study mapped plant occurrence documentation across Brazil using GBIF records dated from 2000 to 2025 for Angiosperms, Gymnosperms, Pteridophytes, and Bryophytes.
Jônnata Fernandes de Oliveira, Danielle Peretti   +1 more
wiley   +1 more source

80 Years of Coastal Erosion and Accretion in Aotearoa New Zealand

New Zealand Journal of Marine and Freshwater Research, Volume 60, Issue 4, December 2026.
Understanding historical coastal change over multi‐decadal timescales is fundamental for coastal hazard assessment and adaptation planning. In Aotearoa New Zealand (NZ), national‐scale coastal change information has historically been fragmented, limited in spatial resolution or constrained to relatively short timeframes.
Emma Ryan, Mark Dickson, Murray Ford, Megan Tuck, Teresa Konlechner   +4 more
wiley   +1 more source

UAV Georeferencing for High-Precision Spatial Localization of Surfacing Yangtze Finless Porpoises

Drones
Accurate spatial localization of small, transient targets in low-texture aquatic environments remains a fundamental challenge in UAV-based remote sensing, where open-water surfaces often lack stable tie points, degrading exterior orientation estimation ...
Dongxu Yang, Wanbing Ren, Yanren Li, Shengmao Zhang, Zuli Wu, Tianfei Cheng, Fei Wang   +6 more
doaj   +1 more source

Multiple ortho‐mosaicking software pipelines produce comparable imagery‐derived wheat phenotypes

The Plant Phenome Journal, Volume 9, Issue 1, December 2026.
Abstract Unmanned aerial systems (UAS) equipped with multispectral and RGB sensors offer valuable data for monitoring crop health and assessing disease severity. However, the wide range of available photogrammetric software complicates software selection for high‐throughput plant phenotyping.
Sanju Shrestha, Phillip D. Alderman, Grishma Ojha, Brett F. Carver   +3 more
wiley   +1 more source

UAV‐based RGB and multispectral vegetation indices as alternatives to light box‐derived dark green color index for turfgrass color assessment

The Plant Phenome Journal, Volume 9, Issue 1, December 2026.
Abstract Traditionally, turfgrass color has been assessed through visual ratings or light box‐based digital image analysis, methods that are either subjective or labor‐intensive. In this study, we evaluated the potential of unmanned aerial vehicle (UAV)‐based multispectral and red‐green‐blue (RGB) imagery as a high‐throughput alternative for capturing ...
Ved Parkash, Phillip L. Vines, Sameer Khanal, Jing Zhang, Joann Conner, Susana R. Milla‐Lewis, Nino Brown, David Jespersen, Jodi Johnson‐Maynard, Brian M. Schwartz   +9 more
wiley   +1 more source

Drone‐based phenotyping of maize for multiple disease resistance and yield in breeding field trials

The Plant Phenome Journal, Volume 9, Issue 1, December 2026.
Abstract Improving selection for multiple disease resistance (MDR) and yield in maize (Zea mays L.) requires high‐throughput, objective phenotyping tools, particularly under field conditions where several foliar diseases co‐occur. We evaluated drone‐based multispectral vegetation indices (VIs) for predicting resistance to northern leaf blight (NLB ...
Danilo E. Moreta, Nina Blahut, Nicholas Kaczmar, Judith M. Kolkman, Gary Bergstrom, Margaret Smith, Michael A. Gore, Rebecca Nelson   +7 more
wiley   +1 more source