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c.1| THE PROCESSING OF AERIAL PHOTOGRAPHY
Aero photography or aerial photography is the image of an area or a goal achieved using a special camera mounted on an aerial vehicle. Aerial photography is complementary topographical map, showing the geographical phenomena depending on the season and various factors, which can not be surprised in the topographic map. This is the first step in achieving orthophotoplans representing unprocessed raw images. For the processing of aerial phot...
Find out morec.2| THE PROCESSING OF SATELLITE IMAGES
Preliminary processing of satellite images (preprocessing) involves the application of the following corrections: Radiometric corrections are applied to eliminate errors caused by remote sensing sensor and environment. They are: Corrections to eliminate errors caused by disturbances generated by the sensor detection system, recording and transmitting data. Corrections of changes in the landscape and environment that improves atmospheric an...
Find out morec.3| OBLIQUE PHOTOGRAPHY[MULTIVISION]
The MultiVision technology provides a high quality photogrammetric solution that allows the user to display and analyze spatially anchored oblique aerial photographs based on vertical aerial photographs (orthophoto). MultiVision's advantage over vertical photography is evident as oblique images expose more details at a high resolution. At the end of the process one can look at an object captured from 5 different shooting angles at changing ...
Find out morec.4| STEREORESTITUTION
The digital photogrammetric imaging is performed by internal orientation, relative orientation using automatic and semi-automatic methods of correlation and determination of absolute orientation in space of each frames. Following these steps to create stereoscopic models (pairs of oriented frames) which can thus be operated independently. Given the necessary high points in the absolute orientation, large photogrammetric projects should be an in...
Find out morec.5| LiDAR (Light Detection And Ranging)
Scanning laser aerial LiDAR technology/method of detecting distant objects and determining their position by analyzing the reflected laser impulse of their areas using airborne laser sensor. LiDAR technology is used for flood risk studies, forest inventory (tree height, vegetation density), transport, 3D modeling of buildings, land management and others. Main products are obtained by LiDAR technology DEM (Digital Elevation Model) and contour li...
Find out morec.6| DTM (Digital Terrain Model) & DSM (Digital Surface Model)
DTM - is a topographical model of the Earth that is processed by specific software, it has digital terrain elevation. It is represented on a scale between 1:50 and 1:500. Basics for DTM's are break lines representing edges of objects, sides of buildings, all the small changes in height of the relief. DSM - is crude photogrammetry, 3D representation of the terrain that includes elements such as buildings, vegetation, high voltage lines and t...
Find out morec.7| ORTHOPHOTOGRAPHY
Orthophotomap is an aerial image that has corrected the errors due to the tilt plane on take-over, errors due to uneven stair frames and differences in level of relief. Orthophotomap stand at the basis of a series of processes such as aerotriangulation, digital terrain model (DTM), ortho correction and mosaic. Ortho-rectification is a process that provides a more accurate picture by removing a perspective because in aerial images that are sh...
Find out morec.8| TEHNICAL FEATURES
Photogrammetric scanner GEOSYSTEM DELTA R6 Features: CCD pixel size; 8µm; Geometric resolution; 1µm; Geometric accuracy(RMS) ±2µm; Optimal maximum density; 3.4D; Maximum scanned size 320x320mm or 320x450mm; The maximum diameter of the roll 168mm. Scanner A0 CONTEX CHAMELEON 36” Features: Color monocrom/PLUS; 4 channels RGB and B&W with 14-bits graytone; Resolution: 800dpi. ...
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