43
2.
Woodpile requirements
2.1.
Requirements for the conformity-rated, indirect photo-optic detection of a
woodpile face area
1. Woodpile face shaping: Course as equal-
sided trapezoidal shape with an angle α
and β between 25 to 89 degrees, a minimum height of 1 m and a minimum width
of 2 m to a maximum of 130 m.
2. Woodpile orientation: With the end faces of the logs pointing to the removal path.
3. Ensuring a car can pass the woodpile face at a distance equal to the average height
of the woodpile.
4. Unobstructed view of the front of the piles of wood, the lower log row must be
completely visible, there must also be no obstructive growth.
5. Log diameter with at least 7 cm in a forest typical, species typical diameter distri-
bution.
6. Fresh logs without weathering discolouration on the faces - type-specific end wood
grain colour should be present.
7. No other pile of wood in the field of vision in the background.
8. Side by side storage of woodpiles must be clearly separable from each other. A
distance of 2 m between individual woodpiles is desirable.
9. Wood piling should be flush (deviation of the front surfaces from the middle level
not over ± 30 cm).
10. The stacking of the logs of the same length is performed so that a smooth, ap-
proximately vertical front surface results, which runs straight, without curves and
bends (maximum curvature of the woodpile face of 0.1 m / running meter).
2.2.
Additional requirements for the identification of a container volume
11. The length of the piled logs corresponds to the order length of the species.
12. Front and rear sides of the woodpile have a uniform surface form, so that there
are no differences in area.
13. The stack must lie horizontally on horizontal surfaces in the cross profile - for this
the logs are stored alternately with the thick and thin end to one side.
14. Wood piling separated according to tree species groups.
15. The proportion of identifiable ground logs must not exceed 50%.
16. Wood piling without branches or foreign material intermixed.
3.
Environmental influences
In principle, it is possible to measure under all weather and lighting conditions, as long as in
the picture sequence of the woodpile face area with the individual log ends is displayed in
sufficient quality. The system can only analyse the photo-optically, which is also shown. Picture
sequences or sequence areas with insufficient picture quality are not evaluated and the photo-
optic measurement is not possible.
The environmental influences negatively affecting the picture quality are:
1)
Darkness and twilight
2)
Fog with visibility of less than 10 m
3)
Back light in bright sunlight
4)
The front surface obscuring obstacles, such as growth, pollution, and snow
5)
Old and weathered faces
The following negative environmental influences can be reacted to as follows:
Summary of Contents for sScale
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