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ESTIMATION OF THE ATMOSPHERIC REFRACTION EFFECT IN AIRBORNE IMAGES USING RADIOSONDE DATA
Atmosphere Refraction Airborne Multispectral Radiosonde Geometric Rectification
2016/7/4
The influence of the atmospheric refraction on the geometric accuracy of airborne photogrammetric images was already considered in the days of analogue photography. The effect is a function of the var...
RADIOMETRIC NORMALIZATION OF LARGE AIRBORNE IMAGE DATA SETS ACQUIRED BY DIFFERENT SENSOR TYPES
Multi-Sensor Aerial Images Sensor Radiometry Radiometric Adjustment Mosaic
2016/7/4
Generating seamless mosaics of aerial images is a particularly challenging task when the mosaic comprises a large number of im-ages, collected over longer periods of time and with different sensors un...
DEVELOPING THE STABILIZED MAPPING SYSTEM FOR THE GYROCOPTER–REPORT FROM THE FIRST TESTS
autogyro stabilization LiDAR data quality trajectory estimation power spectral density
2016/7/4
The LiDAR mapping carried out using gyrocopters provides a relatively cheap alternative for traditional mapping involving airplanes. The costs of the fuel and the overall maintenance are much lower wh...
VERIFICATION OF POTENCY OF AERIAL DIGITAL OBLIQUE CAMERAS FOR AERIAL PHOTOGRAMMETRY IN JAPAN
Digital Oblique Aerial Camera Oblique Images Photogrammetric Accuracy Bundle Adjustment Oblique Viewer
2016/7/4
Digital oblique aerial camera (hereinafter called “oblique cameras”) is an assembly of medium format digital cameras capable of shooting digital aerial photographs in five directions i.e. nadir view a...
CMOS IMAGING SENSOR TECHNOLOGY FOR AERIAL MAPPING CAMERAS
Camera Aerial Sensor Photogrammetry Acquisition Orthophoto CCD CMOS
2016/7/4
In June 2015 Leica Geosystems launched the first large format aerial mapping camera using CMOS sensor technology, the Leica DMC III. This paper describes the motivation to change from CCD sensor techn...
EFFICIENT ORIENTATION AND CALIBRATION OF LARGE AERIAL BLOCKS OF MULTI-CAMERA PLATFORMS
multi-sensor calibration oblique aerial imagery tie point decimation bundle block adjustment affine-invariant feature point
2016/7/4
Aerial multi-camera platforms typically incorporate a nadir-looking camera accompanied by further cameras that provide oblique views, potentially resulting in utmost coverage, redundancy, and accuracy...
MULTI SENSOR AND PLATFORMS SETUPS FOR VARIOUS AIRBORNE APPLICATIONS
Multi Sensor Thermal Application
2016/7/4
To combine various sensors to get a system for specific use became popular within the last 10 years. Metric mid format cameras meanwhile reach the 100 MPix and entered the mapping market to compete wi...
COMPARATIVE ANALYSIS OF DIFFERENT LIDAR SYSTEM CALIBRATION TECHNIQUES
Aerial LiDAR quality control quality assurance systematic errors standard operating procedures
2016/7/4
With light detection and ranging (LiDAR) now being a crucial tool for engineering products and on the fly spatial analysis, it is necessary for the user community to have standardized calibration meth...
PERFORMANCE EVALUATION OF DIFFERENT GROUND FILTERING ALGORITHMS FOR UAV-BASED POINT CLOUDS
Point Cloud Ground Filtering Unmanned Aerial Vehicle Aerial Photo Digital Elevation Model Adaptive TIN
2016/7/4
Digital Elevation Model (DEM) generation is one of the leading application areas in geomatics. Since a DEM represents the bare earth surface, the very first step of generating a DEM is to separate the...
A FRAMEWORK FOR AN AUTOMATIC SEAMLINE ENGINE
Aerial Images Orthophoto Mosaic Radiometry Seamlines Graphcut
2016/7/4
Seamline generation is a crucial last step in the ortho-image mosaicking process. In particular, it is required to convolute residual geometric and radiometric imperfections that stem from various sou...
Knowledge-based road interpretation in aerial images
Knowledge road interpretation aerial images
2016/5/23
This paper presents a knowledge-based method for automatic road extraction from aerial images. The method uses a hybrid control strategy in which hypotheses of roads are generated in a bottom-up proce...
Webtop Photogrammetry - a tool for distributing photogrammetric imageries and knowledge
Webtop Photogrammetry distributing photogrammetric imageries knowledge
2016/5/23
The interest to use Internet for accessing and distributing geospatial data has emerged rapidly since the invention of WWW-technology. Related to photogrammetry, there are several experiments and site...
Triangulated Digital Elevation Model: definition of a new representation
DEM structure DEM generation TIN regular network DEM quality criterion
2016/5/23
In this paper we discuss about the need of a new DEM representation for simulation in GIS. This leads us to analyse through quality criteria the current DEM structures. Then we propose a new DEM repre...
The role for Digital Elevation Models (DEMs) has been expanding rapidly in recent years. Applications are increasing and encompass industries as diverse as telecommunications, forestry, municipal engi...
Aerial photographs of forest trees details
Aerial Photographs Forestry experimental Plots physiotogical Activity
2016/5/20
The aerial photographs showing details of forest trees, e.g. young shoots, leaves, flowers, fruit, twigs and parts of the trunk, partly displayed the forest soil and the plants in the undergrowth laye...