Dirt point in pulp and cellulose
Using the surface microscope Roboscope with transmitted light, cellulose sheets up to 1mm thickness can be penetrated. Image area is 150x250 mm. An error list with the size and distribution of foreign objects is automatically created using machine vision.
# 1 cellulose rated visually
1mm thick cellulose checked by eye on a light table and spots of dirt marked with circles
# 2 Raw image created with Roboscope
Thanks to optimized illumination, significantly more details can be seen.
# 3 Result of image recognition
Dirt point found, shown with dimension lines and the area calculated automatically. The small, dark foreign body on the right (above the circle) with red marking was not found by the human observer. Sizes in mm.