Understand What is photogrammetry? Learn benefits, advantages and overall concept of photogrammetry from best photogrammetry training institutes.

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What is Photogrammetry?
Overview & Resources

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Introduction
• Primarily, Photogrammetry is the technology and art of gathering credible
data information about physical objects without being physically present
there. It also measures and interprets photographic images and models of
recorded radiant electromagnetic and other aspects.
• Photogrammetrists can also a process that combines photography and
geometry. It has a significant impact on the current architectural works.
Photogrammetry is a simple method of deriving metric information about
an object through measurements made on the photograph of that object.

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• Photogrammetry plays a vital role in today’s modern industry.
Furthermore, by using multiple photos of the original real-world object
Photogrammetry authors’ high-quality, refillable and game ready assets.
• Thus, it’s utterly suited to objects that consume much time to design in 3D
sculpting software. It also provides enormous quality geometry and
textures.

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Photogrammetry Invention
• The concept Photogrammetry was initially in use by the Prussian Architect
in 1867 who designed some of the earliest topographic maps and some
elevation drawings.
• Photogrammetry is approximately as old as photography itself. Since its
development nearly 150 years ago, Photogrammetry has changed from
purely analog, optical-mechanical technique. Analytical techniques based
on the computer-aided of mathematical algorithms.

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• Finally to softcopy Photogrammetry based on digital representation and
computer vision, which is lacking any opt mechanical hardware.
• Photogrammetry is mainly concern with creating precise measurements of
3D objects and also terrain features from 2D photographs. The
Applications includes the mapping of coordinates; distances, heights,
areas, and also volumes. The preparation of topographic maps; and the
generation of digital elevation models.

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Primary Advantages of Photogrammetry
• Photogrammetry has numerous advantages that are beneficial in modern
construction as well as various other sectors like:
• Covers large areas quickly.
• The Photogrammetry technique is cost-efficient.
• The method is the easiest way to obtain or access information from the air.
• The photographic images illustrate great details.
• Also, Surveys received by aerial Photogrammetry systems have benefits
when it’s compared with ground survey methods.

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Let’s check the few more benefits of Photogrammetry
• When the photos clicked, photos provide a permanent record of the
current terrain condition.
• Photos can use to send information to the general public, state, other
federal or to local bureaus.
• Photogrammetry can also apply to locate locations that are difficult to find
or impossible to access from the ground.
• Topographic mapping and DTMs of large areas can be accomplished
relatively quickly and at a cheaper cost when matched to ground survey
methods.

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Overview
• Photogrammetry comprises merely all techniques that concerned with
obtaining measurements of real-world objects and terrain features from the
images. These may include aerial as well as terrestrial images, and they may
also click on film cameras, digital cameras or electronic scanners on tripods,
airborne or space borne platforms. Photogrammetry Applications involve the
mapping of coordinates, the distances, the height of the particular object, its
areas, and volumes, for the preparation of topographic maps, and also the
production of digital elevation models.
• Learning and Understanding the geometry of a single photograph is the basis
for all measurement techniques. Some simple equations may use for deriving
measurements from different vertical pictures clicked over flat terrain.

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Photogrammetry Resources
• Many institutes are providing the training on Photogrammetry and as well
as Photogrammetry have vast career opportunities in almost every
field. Below are the Top few lists of those institutes-
o NIBT- National Institute Of Building Technology.
o American Society for Photogrammetry and Remote Sensing
o International Society for Photogrammetry and Remote Sensing
o CIPA – Committee for Documentation of Cultural Heritage

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Conclusion
• The fundamental principle behind the concept Photogrammetry
measurements is the geometrical–mathematical regeneration of the paths
of rays from the object to the sensor at the instant of exposure. The most
fundamental element for Photogrammetry, therefore, is the knowledge of
the geometric components of a single photograph.