Basic Definition of Photogrammetry
The basic definition of photogrammetry is the art, science, and technology of gathering reliable information regarding any physical object and the complete environment. This technique involves a process of record-keeping, measuring, and evaluating terrestrial and aerial photographs.
Break-down of the term
In a sense, the breakdown of the term photogrammetry is in three parts: ‘photo’ – meaning ‘picture,’ ‘gram’ – meaning ‘drawing’ and ‘metry’ – meaning ‘measurement.’
This explanation makes your understanding clear.
Early advancements in the system and science of photogrammetry happened many years before the actual invention of appropriate things to apply the application. As time rolled on, the theories became a certainty, and the essential technologies came into existence. The timing when all these things evolved was a crucial time.
The scope of photogrammetry
Photogrammetry is one of the most extensively and technically preferred means for producing maps. Significant development originated in European nations and later spread over into Canada and the U.S. In the early 1900’s, an International Society came into the formation for serving as a collaborative and collective house for the progress of this science. The fields of Remote sensing and Photogrammetry widened their horizons in recent years. As per consideration, to include the investigation of diversified media, the images are still the primary root of information.
Branches
There are two distinct branches when it comes to the application of photogrammetry.
The primary department requires precise estimations and calculations regarding the shape, size, and position of graphics features.
The second branch deals just with identification and description of the detailed features.
In both the cases, a specially designed accurate camera system takes the pictures. The camera, therefore, is the source of all capturing of data and plays a vital role in any relevance. The photo calculating devices, as well as the final system of output and interpretation, also are the significant areas of concern. These three tools; camera, a mapping device, and production medium, will eventually define the status and application of photogrammetric measurements.
Why is photogrammetry so useful?
Notably, there are several reasons. Since photography is primarily of the ‘non-contact’ category, it presents a different way of perceiving and documenting information, without the necessity of a physical appearance. This statement holds true in the state of aerial photogrammetry. Aerial cameras provide the facility to photograph difficult, hostile or dangerous matter, with scarce or no risk to material and group. You can consider military functions as an example of this situation out of many others like it.
Additionally, there are numerous advantages of aerial photogrammetry applied widely in the nonmilitary application as well. Like, Engineers, Designers, and Planners also use mapping and pictures. Therefore, the resulting list represents these applications:
- Natural disaster
- Environmental studies
- Land use and planning
- Construction
- Site development
- Insurance studies
- Real estate
- Surveying
- Mineral and Geotechnical research
- Agricultural forecasting
- Civil engineering
Within the streams of nearly all services, there is a demand for specific mapping remarkably. With the opening of technology, the usefulness of photogrammetry in above-mentioned and other areas is almost limitless. Also, mappings, as well as other techniques, play an advanced role in satisfying the public desires for comfort, transportation, and ease.
Conclusion
You need to know the importance of such fields which are not into the limelight but give tremendous opportunities to work. Think out of the box for your career.
