Two-profile measurement geometry for detecting and classifying all surface defects with smooth and wrinkled products keeping focus on dents and elevated defects.
The 3D web inspection is performed typically having paper against supporting roll. This geometry enables to detect very small dents and elevated defects in a very high accuracy. It is based on around 10 degree illumination angle and 90 degree camera viewing angle and can detect all other surface defects on standard paper and board machines. With products having smooth and patterned surfaces, it is necessary to combine high angle reflection detection with 3D measurement to be able to handle various needs of all grades.