Bark can sometimes be planed smooth. This board measures full thickness at the smooth bark location but the grading inspector will call it
wane -- so GradeScan must also. The White Fir board image on the left shows what happens when the board is inspected
by a geometric-only scanner. The green lines separate the board in regions of full thickness and less than full
thickness. The geometric-only scanner does not provide a complete wane solution.
The image on the right shows the results of GradeScan's Smooth Bark Finder. Additional defect boxes are placed over the regions of smooth bark. GradeScan's multiple sensors are able to combine the geometric profile with the surface texture and color to classify bark areas correctly.