Photogrammetry is the process
of using overlapping aerial images to extract precise ground position. The word
‘Photogrammetry’ is a combination of three words which basically means light,
drawing, and measurement. It is a technique for acquiring dense 3D geospatial
data and information. If any business is
searching for some photogrammetric solutions nearby, one must look for the
provider that render photogrammetric solutions to meet the user’s needs with
the best quality and at a globally competitive price.
Photogrammetry is the
process which is as old as modern photography. The science has continued to
develop gradually over time, especially in view of the recent technological
advancements.
Photogrammetry is used in:
Today, photogrammetry is
used for an extensive variety of purposes in the geographical information
system (GIS) field, which includes:
- Creating a digital elevation model (DEM)
- Accurate raster image backdrops for visualizing GIS data
Digital Photogrammetry
There are two types of
photogrammetry, Digital Photogrammetry, and Hardcopy Photogrammetry. If the
digital image is used for the calculation, then it is termed as Digital
Photogrammetry. On the other hand, if a hardcopy image is used then it is
hardcopy photogrammetry.
There are also two distinct
types of digital photogrammetry, which includes:
- Close-Range Digital Photogrammetry
This
particular photogrammetry involves the use of a camera mounted on a tripod
stand of vehicle. In this method, high-end digital cameras are used to
photograph objects from three or more different locations to develop
appropriate lines of sight.
- Aerial Photogrammetry
This
method is done by mounting the camera in an aircraft and subsequently taking
photographs of the ground. The camera is mounted in an aircraft and is
typically pointed vertically towards the ground. Aerial photographs are taken
from the air by a special camera mounted in an aircraft flying over the area with
the camera axis vertically.
Mapping Issues
The recent technological
advancements in computer vision and machine learning has made the overall
process a bit more complex. The
developers of photogrammetric equipment and software face the challenges in providing
the mapping solutions that are advanced, and can meet high customer
expectations in terms of user-friendliness. Hence, it is crucial to look for
digital photogrammetric mapping solutions service provider that can customize
the solutions as per the clients’ needs.
