Shallow Wane Detection

GradeScan
Shallow Wane Detection

Smooth Bark

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.

A White Fir board with smooth bark regions. GradeScan finds the smooth bark and includes it as wane.

Saddle Wane

Saddle wane is wane that is almost full thickness but because one face of the board was so close to the outside of the tree, that face has a slight curvature. Geometric confusion happens as the missing wood approaches skip distance. Is it wane, or is it skip? Lucidyne's Saddle Wane Finder places boxes around the saddle wane to eliminate doubt.