| Scottish Digitisers / Freesia by Stefanus Van der Walt
|
1. I have built a chamber from strips of mirror one inch high
and four by five inches in width and length. This fits into the tranny hood
space on the scanner. I place the light box (having previously removed it from
the base) on top of this chamber, which means the light source is now lifted
by an inch from the scanning bed. The flower or object to be scanned is placed
inside the chamber. It is sufficiently large enough for most small objects. (I
may build a larger chamber to fit across the whole scanner bed).
2. I now make my first scan as if scanning a transparency. This
gives a translucent flower on a clear white background. Save as a file.
3. WITHOUT MOVING the subject or the box and hood I next make a
scan as a flatbed scan. This is done by firstly making a pre-scan and then
setting the scanner settings to yield the same size and resolution as
the scan using the transparency hood. This gives a solid
flower, but will be against a messy background. Save as file.
4. Now for the important bit. Open both the files, and
they should be exactly the same in size and resolution. Drag the translucent
flower into the solid flower as a second layer and save the new file. Close
the previously two files.
5. You now have a picture with three layers. Background plus
two identical flowers but against different backgrounds. The translucent layer
need to be the top layer. Using the magic wand tool, or whichever your
favourite way of selecting is, select the flower from the background. Save the
selection as a Channel. Once selected remove the background on the translucent
flower layer by deleting it. The translucent flower now is sitting on top of
the next layer. Using the Vector tool line the two layers up exactly.
Re-select the previously saved selection, select the solid flower layer, and
then remove the background by deleting it.
6. If all has gone well you should now have two identical
flowers on two separate layers against the Background Layer. Save this
file.
7. I can now say 'add salt to taste' but instead what
you do is to use the opacity, or any other colour adjustment tools until the
flower is to your liking. With the example I sent I intensified the colour on
the bottom layer and reduced the opacity on the top layer until the
desired affect was achieved.
8. You will have gathered by now that to put together
a number of different flowers plus buds and other paraphernalia could easily
result in several layers, and a recent attempt of mine resulted in a file size
of 254MB before flattening for printing.