Results 31 to 40 of about 1,960 (165)

Object-Based Land-Cover Mapping with High Resolution Aerial Photography at a County Scale in Midwestern USA

open access: yesRemote Sensing, 2014
There are growing demands for detailed and accurate land cover maps in land system research and planning. Macro-scale land cover maps normally cannot satisfy the studies that require detailed land cover maps at micro scales.
Xiaoxiao Li, Guofan Shao
doaj   +1 more source

Creating of digital surface model and orthophoto from ASTER satellite data and their application in land/water research

open access: yesSoil and Water Research, 2008
Satellite data has become a commonly used information source. Landscapes components such as water, inorganic substances, vegetation, and the atmosphere may be distinguished making use of their spectral characteristics.
Dana Tollingerová, Karel Pavelka
doaj   +1 more source

Applying UAV-Based Remote Sensing Observation Products in High Arctic Catchments in SW Spitsbergen

open access: yesRemote Sensing, 2023
In the age of remote sensing, particularly with new generation Uncrewed Aerial Vehicles (UAVs), there is a broad spectrum of applications, especially in remote and rapidly changing areas such as the Arctic.
Abhishek Bamby Alphonse   +3 more
doaj   +1 more source

ORTHOPHOTO-DTM System

open access: yesJournal of the Japan society of photogrammetry, 1972
We have developed a ORTHOPHOTO-DTM System, that automatically produces a digital terrein model by using height information which is gotten during scanning process in producing orthophoto.Using this system, we can get a film that is printed height values at intersecting points of meshes which is spread out in any scale we want, and at the same time we ...
Nakamura, Koji   +5 more
openaire   +2 more sources

The New Methods for Rapid Exposure and Seismic Vulnerability Assessment. How Do They Adapt to Different Scenarios?

open access: yesProceedings, 2019
We present a procedure for exposure and vulnerability evaluation that integrates LiDAR, orthophotos, and other ancillary datasets. It comprises three phases: (1) city stratification into homogeneous regions; (2) exposure database compilation; and (3 ...
Yolanda Torres   +6 more
doaj   +1 more source

Digital Orthophoto Production Using Close-Range Photographs for High Curved Objects

open access: yesJournal of Engineering, 2015
Orthophoto provides a significant alternative capability for the presentation of architectural or archaeological applications. Although orthophoto production from airphotography of high or lower altitudes is considered to be typical, the close range ...
Fanar Mansour Abed, Ass. Lect.
doaj   +2 more sources

Fusion of Different Image Sources for Improved Monitoring of Agricultural Plots

open access: yesSensors, 2022
In the Valencian Community, the applications of precision agriculture in multiannual woody crops with high added value (fruit trees, olive trees, almond trees, vineyards, etc.) are of priority interest.
Enrique Moltó
doaj   +1 more source

Järvselja metsade tormikahjustuste seire mehitamata õhusõidukitega

open access: yesMetsanduslikud Uurimused, 2023
This paper provides an overview of a small research project. The object of the research was a 16 km2 forested area located in the territory of Järvselja Study and Experimental Forest, Estonia, which was damaged by storms in June 2021.
Kokamägi Kaupo   +2 more
doaj   +1 more source

Advantages in Using Colour Calibration for Orthophoto Reconstruction

open access: yesSensors, 2022
UAVs are sensor platforms increasingly used in precision agriculture, especially for crop and environmental monitoring using photogrammetry. In this work, light drone flights were performed on three consecutive days (with different weather conditions) on an experimental agricultural field to evaluate the photogrammetric performances due to colour ...
Francesco Tocci   +6 more
openaire   +4 more sources

A Novel Method for Digital Orthophoto Generation from Top View Constrained Dense Matching

open access: yesRemote Sensing, 2022
The digital orthophoto is an image with both map geometric accuracy and image characteristics, which is commonly used in geographic information systems (GIS) as a background image. Existing methods for digital orthophoto generation are generally based on
Zhihao Zhao, Guang Jiang, Yunsong Li
doaj   +1 more source

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