DESCRIPTION OF FILES

The following files are typical of the different images in repertories 
on wich the Bernstein partners OEAW (KSBM) and LABW are 
working. They show the various issues regarding their processing.
The software to be developped has to be able to do a number of 
measurements on such images. These measurements are laid lines 
density, chain lines distance and watermark high and width.

b1_00001 18-9ll - partial lines.png
There is a half line at the bottom of the laid lines representation - 
is this some sort of meaningless artefact or is it a laid line?

b1_00277 20ll - uneven spacing.png
This image features unevenly spaced laid lines.

b1_00639 - coluding lines.png
b1_01070 - coluding lines.png
Here we see laid lines that merge. The problem can
be fixed if there is a reproduction of the watermark with
a better resolution. If not the software should should be 
able to take the decision not to perform laid lines density 
measurment on this image, since the resulting measure
will be wrong.

b1_02057 - blackened step.png
One interval between two laid lines is filled. When doing
the measurement take into consideration this feature.
Contact LABW & OEAW (KSBM) to learn what the filling
of the interval means to the watermark cataloger.

b1_02830 - two ll imprints.png
Presence of two laid lines reproductions for the same 
watermark.

b2_03939 - three-step ll.png
Laid lines with variable interval - a short and a long one,
or two short and a long one.

b1_03263 - ll & stitches.png
Note that the diagonal marks on the long vertical lines
don't represent laid lines (they represent stiches holding
the chain line to the sieve).

b1_03153 - two-step ll.png
Laid lines with variable interval - a short and a long one,
or two short and a long one.

b2_05304 - no ll.png
No laid lines in this image.

b2_05433 - two-step & stitches.png
Two step laid lines pattern and diagonal marks.

b2_05765 - blackened step - 5 img.png
5 images featuring a blackened step for the laid lines pattern.

b2_05765 - blackened step.png
Idem.

b2_05765 - two ll imprints.png
Overlapping laid lines in the reproduction, concomittent
to the presence of a second laid line pattern.

b3_09728 - coluding lines.png
Overlapping laid lines in the reproduction.

pol-050008 - long lines.png
Long laid lines representation.

pol-050010 - winding lines.png
The chain and laid lines are not straight parallel lines.

pol-050033 - short lines.png
Laid lines are represented with short lines.

pol-050294 - winding lines.png
The chain and laid lines are not straight parallel lines.

pol-050689 - wo lines.png
No laid lines.

pol-051186 - half lines.png
Laid lines are half as long as in the 'long' representation type.

pol-051309 - long lines.png
Long laid lines.

