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ORTHORECTIFICATION OF A LARGE DATASET OF HISTORICAL AERIAL IMAGES: PROCEDURE AND PRECISION ASSESSMENT IN AN OPEN SOURCE ENVIRONMENT
image orthorectification GIS historical aerial images
2018/11/8
The availability of data time series spanning a long period is crucial for landscape change analysis. A suitable dataset, both in terms of time span and information content, must be available for the ...
CAMERA CALIBRATION ACCURACY AT DIFFERENT UAV FLYING HEIGHTS
Camera calibration accuracy assessment object distances UAV flying heights
2017/4/6
Unmanned Aerial Vehicles (UAVs) can be used to acquire highly accurate data in deformation survey, whereby low-cost digital cameras are commonly used in the UAV mapping. Thus, camera calibration is co...
STUDY OF AUTOMATIC IMAGE RECTIFICATION AND REGISTRATION OF SCANNED HISTORICAL AERIAL PHOTOGRAPHS
Historical aerial photographs Image matching Alignment of images Rectification Registration
2016/12/1
Historical aerial photographs directly provide good evidences of past times. The Research Center for Humanities and Social Sciences (RCHSS) of Taiwan Academia Sinica has collected and scanned numerous...
APPLYING UAV AND PHOTOGRAMMETRY TO MONITOR THE MORPHOLOGICAL CHANGES ALONG THE BEACH IN PENGHU ISLANDS
UAV beach monitoring Digital Surface Model Tombolo
2016/12/1
Penghu islands, in the southern Taiwan Strait, is a remnant of a middle-late Miocene basaltic shield volcano. We present a procedure to use UAV (Unmanned Aerial Vehicles) to perform photogrammetry sur...
BEACH VOLUME CHANGE USING UAV PHOTOGRAMMETRY SONGJUNG BEACH,KOREA
Coastal Topographic Change Unmanned Aerial Vehicle (UAV) RTK-VRS Beach Volume Change
2016/12/1
Natural beach is controlled by many factors related to wave and tidal forces, wind, sediment, and initial topography. For this reason, if numerous topographic data of beach is accurately collected, co...
THE COMBINATION OF UAV SURVEY AND LANDSAT IMAGERY FOR MONITORING OF CROP VIGOR IN PRECISION AGRICULTURE
Unmanned aerial vehicle satellite remote sensing vegetation indices winter wheat site specific crop management
2016/12/1
Mapping of the with-in field variability of crop vigor has a long tradition with a success rate ranging from medium to high depending on the local conditions of the study. Information about the develo...
MULTI-TEMPORAL ANALYSIS OF WWII RECONNAISSANCE PHOTOS
Multi-temporal Reconnaissance Second World War Aerial photography Archive Image analysis Interpretation
2016/12/1
There are millions of aerial photographs from the period of the Second Wold War available in the Allied archives, obtained by aerial photo reconnaissance, covering most of today’s European countries. ...
UAV-BASED AUTOMATIC TREE GROWTH MEASUREMENT FOR BIOMASS ESTIMATION
UAV point cloud biomass estimation tree height
2016/11/30
Manual in-situ measurements of geometric tree parameters for the biomass volume estimation are time-consuming and economically non-effective. Photogrammetric techniques can be deployed in order to aut...
ESTIMATION OF STAND HEIGHT AND FOREST VOLUME USING HIGH RESOLUTION STEREO PHOTOGRAPHY AND FOREST TYPE MAP
Stand Height Forest Volume normalized DSM Aerial Photo
2016/11/30
Traditional field methods for measuring tree heights are often too costly and time consuming. An alternative remote sensing approach is to measure tree heights from digital stereo photographs which is...
USE OF A MULTISPECTRAL UAV PHOTOGRAMMETRY FOR DETECTION AND TRACKING OF FOREST DISTURBANCE DYNAMICS
UAV Photogrammetry Multispectral Sensor Forest Disturbance Vegetation Indices Change Detection
2016/11/30
This study presents a new methodological approach for assessment of spatial and qualitative aspects of forest disturbance based on the use of multispectral imaging camera with the UAV photogrammetry. ...
COMPARISON OF DIGITAL SURFACE MODELS FOR SNOW DEPTH MAPPING WITH UAV AND AERIAL CAMERAS
snow height dense point cloud digital surface model aerial camera
2016/11/30
Photogrammetric workflows for aerial images have improved over the last years in a typically black-box fashion. Most parameters for building dense point cloud are either excessive or not explained and...
INNOVATIV AIRBORNE SENSORS FOR DISASTER MANAGEMENT
Multi Sensor Thermal Disaster Management
2016/11/30
Modern Disaster Management Systems are based on 3 columns, crisis preparedness, early warning and the final crisis management. In all parts, special data are needed in order to analyze existing struct...
A NEW METHOD TO DETECT REGIONS ENDANGERED BY HIGH WIND SPEEDS
Non-Parametric Regression Boosted Regression Trees Wind Speeds Spatial Predictions
2016/11/30
In this study we evaluate whether the methodology of Boosted Regression Trees (BRT) suits for accurately predicting maximum wind speeds. As predictors a broad set of parameters derived from a Digital ...
ANALYSIS OF DEBRIS FLOW BEHAVIOR USING AIRBORNE LIDAR AND IMAGE DATA
Debris Flow LiDAR Digital Surface Model Geomorphologic Change
2016/11/30
The frequency of debris flow events caused by severe rainstorms has increased in Korea. LiDAR provides high-resolution topographical data that can represent the land surface more effectively than othe...
FEASIBILITY STUDY OF INEXPENSIVE THERMAL SENSORS AND SMALL UAS DEPLOYMENT FOR LIVING HUMAN DETECTION IN RESCUE MISSIONS APPLICATION SCENARIOS
SUAV Emergency situations FLIR sensor Human detection IR Remote sensing Rescue operations
2016/11/30
Significant efforts are invested by rescue agencies worldwide to save human lives during natural and man-made emergency situations including those that happen in wilderness locations. These emergency ...