Measurements in the real world

To measure is to know. If you cannot measure it, you cannot improve it.

Photogrammetry can be defined as the science of obtaining reliable measurements and producing maps by means of photography.

It is no secret that in practice drawings show a different reality than is perceived, sometimes resulting in painful financial consequences.
With the knowledge of photogrammetry, three dimensional drawings and orthophotos can be produced in a very short period of time, creating boundless possibilities.
The advantage of this non contact technique, is that dimensions of an object can be achieved with a high degree of accuracy without disruption in the area.
The photography is taken from a number of different angles, using a standard calibrated digital or analogue camera.
After processing, any number of measurements can be taken from the photographs. In theory if you can see it you can measure it.

A good example of the possibilities that 3D vector maps can play within municipal governments, is that more buildings are appearing on monumental lists that are frequently lacking in accurate vector data.
With speed and accuracy of photogrammetry, 3D maps and ortho photos can be provided.
Having these resources, restoration projects for example would always have a correct reference and possible construction errors, building failings could be identified and monitored very easily.

Cadastral, Architecture, Visual and 3D Objects. Under the different tabs you can view a number of different applications of photogrammetry.