The measurement consists of following:

• creation and printing calibration pattern,
• taking photographs of the calibration pattern (with preserve of the specific rules) with various focal lengths (optical zoom),
• analysis of obtained photographs in the application: BPM: Lens Distortion Correction Module (extended version),

   The photos have to be taken properly - so it is necessary to acquaint with the given rules. The main principles are described in the right document in the DOWNLOAD section.

For instance, the survey position is shown below.