Photographs and videos oblique to a surface are transformated into a plan view like a map. Scanners and digital cameras can be used directly from within the program so the rectification of any kind of picture is possible
Distances can be measured true to scale and true to angle.Up to 10 different reference lengths can be used for rectification. 
All camera parameters (like camera inclina­tion, rotation, focal length and camera height) are calculated in an optimization process using the reference lengths.
A drawing program to make road sketches and an accident scene description is included.
 
Rectification of Photographs:
Rectification is the transformation of a pho­tograph oblique to a surface into a plan view, like a map.  The program allows the user to rectify photographs of surfaces which are close to being planar, such as roadway surfa­ces at accident scenes.
 
Video-Rectification:
With PC Rect 4.0 also the handle of videos is enabled.The video is edited in PC-Rect 4.0. The process is in principle the same as in the preceding versions.
The video must be divided into individual pictures, which are continuous numbered.
A cut-out has to be selected and reference distances have to be defined.
 
Result of Both Methods:
Distances can be measured true to scale and true to angle.Up to 10 different reference lengths can be used for rectification. Measurement grid method for the rectification of multiple images. 
All common bitmap formats are supported for import and export of scanned photo­graphs and rectified pictures (Gif, Tif, Jpeg, Bmp, PCS, EPS, Photo CD) or videos as AVI files.
Direct use of the 4 points method is suppor­ted.
Rectification errors are calculated and can be printed in a protocol form.
All camera parameters (like camera inclina­tion, rotation, focal length and camera height) are calculated in an optimization process using the reference lengths.
Scanners and digital cameras can be used directly from within the program using the Twain interface. An additional scanning software is not necessary.
Mouse Wheel support for all edit boxes.
User customizable menu bars and toolbars .
Multiselect function for loading bitmaps.
Windowlist in main menu.