Transformation of photo

The basic mistakes sources of the raster image are nonlinear deformation of a base, on which the initial material is printed (a paper, photographic paper, plastic, etc.) and errors of scanner. For photographic materials to these sources it is possible to add nonperpendicularity of a camera axis of photographed surfaces (an inclination of a photo), discrepancy (or inexact conformity) of a photo scale to scale of a created map, and also the amendment for relief, curvature of the Earth, a refraction, etc.

The task of transformation of a photo realizes the first stage of technology of orthophotomap creations and is used for elimination of these mistakes.

Transformation is made by elements of exterior orientation.

Transformation of a raster is carried out by photorto.dll module, which is called through Run Applications item of Tools menu. Start of transformation.

In practice often a necessity of a raster transformation by a combination of different ways, for example Transformation with use of vector map arises.