Measurement
The image processing tools used are working in the sub pixel range that means a measurement with an accuracy of up to 1/40 pixels can be carried out. There is a wide selection of evaluation tools available, here to count among other things:
- distance measurement of edges
- measurement of radii and circle sections
- determination of the roundness of a circle
- measuring the distances of objects to each other
- measurement of distances between circles and edges
- intersection calculations of various kinds
- calculation of distances using trigonometric functions
It is possible to convert all pixel readings in a defined unit (for example millimeters) by linear and nonlinear calibration functions.
The following image shows a filter where different edges with different measuring tools were made visible. It is to be recognized that even edges with a very small contrast are detectable by the image processing routines used by us.
