Visualization with High-Resolution Aerial Photography in Planning-Related Property Research

2008 ◽  
pp. 141-158
Author(s):  
Scott Orford
Keyword(s):  
High Resolution ◽  
Aerial Photography ◽  
Related Property

scholarly journals Using kites for 3-D mapping of gullies at decimetre-resolution over several square kilometres: a case study on the Kamech catchment, Tunisia

2018 ◽  
Vol 18 (6) ◽  
pp. 1567-1582 ◽  
Author(s):  
Denis Feurer ◽  
Olivier Planchon ◽  
Mohamed Amine El Maaoui ◽  
Abir Ben Slimane ◽  
Mohamed Rached Boussema ◽  
...  
Keyword(s):  
High Resolution ◽  
Aerial Photography ◽  
Airborne Lidar ◽  
Data Set ◽  
Topographic Data ◽  
Independent Field ◽  
Wide Range ◽  
Laser Systems ◽  
High Level

Abstract. Monitoring agricultural areas threatened by soil erosion often requires decimetre topographic information over areas of several square kilometres. Airborne lidar and remotely piloted aircraft system (RPAS) imagery have the ability to provide repeated decimetre-resolution and -accuracy digital elevation models (DEMs) covering these extents, which is unrealistic with ground surveys. However, various factors hamper the dissemination of these technologies in a wide range of situations, including local regulations for RPAS and the cost for airborne laser systems and medium-format RPAS imagery. The goal of this study is to investigate the ability of low-tech kite aerial photography to obtain DEMs with decimetre resolution and accuracy that permit 3-D descriptions of active gullying in cultivated areas of several square kilometres. To this end, we developed and assessed a two-step workflow. First, we used both heuristic experimental approaches in field and numerical simulations to determine the conditions that make a photogrammetric flight possible and effective over several square kilometres with a kite and a consumer-grade camera. Second, we mapped and characterised the entire gully system of a test catchment in 3-D. We showed numerically and experimentally that using a thin and light line for the kite is key for a complete 3-D coverage over several square kilometres. We thus obtained a decimetre-resolution DEM covering 3.18 km2 with a mean error and standard deviation of the error of +7 and 22 cm respectively, hence achieving decimetre accuracy. With this data set, we showed that high-resolution topographic data permit both the detection and characterisation of an entire gully system with a high level of detail and an overall accuracy of 74 % compared to an independent field survey. Kite aerial photography with simple but appropriate equipment is hence an alternative tool that has been proven to be valuable for surveying gullies with sub-metric details in a square-kilometre-scale catchment. This case study suggests that access to high-resolution topographic data on these scales can be given to the community, which may help facilitate a better understanding of gullying processes within a broader spectrum of conditions.

Mapping of Greenland landscape using aerial photography and orthophotography (Technical Note)

2013 ◽  
Vol 3 (2) ◽  
pp. 208-212
Author(s):  
Petr Vávrů ◽  
Helge Viken
Keyword(s):  
High Resolution ◽  
Aerial Photography ◽  
Local Scale ◽  
Technical Note ◽  
Western Coast ◽  
Natural Landscape ◽  
Aerial Photos ◽  
Digital Terrain ◽  
Terrain Models ◽  
Contour Lines

Aerial photography is an important tool for mapping on local scale. In the paper, description of aerial photos taken over several urban and natural landscape sites in West Greenland is given as well as their processing. Using a high-resolution software, aerial photos were processed and digital terrain models (DTMs) of the sites produced. Technique of contour lines was used to check the created DTM for particular site. Finally, orthophotos of all sites were produced. In this Technical Note, several sites located on Western coast of Greenland are presented and the use of maps generated from orthophotos is discussed.

scholarly journals Land cover classification using high‐resolution aerial photography in adventdalen, svalbard

2015 ◽  
Vol 97 (3) ◽  
pp. 473-488 ◽  
Author(s):  
Carla Mora ◽  
Gonçalo Vieira ◽  
Pedro Pina ◽  
Maura Lousada ◽  
Hanne H. Christiansen
Keyword(s):  
High Resolution ◽  
Land Cover ◽  
Aerial Photography ◽  
Land Cover Classification

Mapping of permafrost on Vega Island, Antarctic Peninsula, using satellite images and aerial photography

2002 ◽  
Vol 34 ◽  
pp. 184-188 ◽  
Author(s):  
Evgeniy Ermolin ◽  
Hernán De Angelis ◽  
Pedro Skvarca
Keyword(s):  
Remote Sensing ◽  
High Resolution ◽  
Antarctic Peninsula ◽  
Aerial Photography ◽  
Satellite Images ◽  
Remote Sensing Data ◽  
Future Extension ◽  
Low Altitude ◽  
Permafrost Mapping ◽  
Cryogenic Processes

AbstractThe work presented deals with detailed mapping of permafrost in Devil Bay, Vega Island, northeastern Antarctic Peninsula. Mapping of landforms and permafrost features within a periglacial plain was performed using high resolution visible satellite images and aerial photography. Two maps of permafrost were produced: one based on analysis and interpretation of visible satellite imagery and another on low-altitude aerial photography, both yielding similar results. The principles of morphogenesis were applied to map production, distinguishing both the syncryogenic and epicryogenic formations and each constitutive cryofacies. The interpretation of remote-sensing data allowed areas of occurrence of particular cryogenic processes to be defined. Remote sensing was found to be useful for permafrost mapping at both medium and large scales, and applicable for future extension to other regions in Antarctica.

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