Manual - Holdan.eu

13.5.3 Maximum Image size – how large can my logo / Testcard be?
The image size for a logo or Testcard is limited by the amount of memory
available in the unit; this is approximately 128K Bytes of compressed image
for a Testcard and approximately 32K Bytes for a Logo. The compression
used by the Image loader is Run Length Compression.
This provides excellent compression for simple images with well defined
contiguous blocks of colour such as logos. However the effectiveness of the
compression is reduced when images are anti-aliased, for example:
If we take a single line of pixels and look at them closely we
will see for a non aliased image solid pixels of one colour .If we
look at a line when anti-aliased we can see that no longer is
the leg made of solid pixels but of varying shades this will
cause an increase in complexity and reduction in compression.
So how large can the source logo / image be? The size of the original image
is a minor factor; the most important factor is the complexity and amount of
anti-aliasing that is present.
13.6 Resolution Editor
On some units it is possible to modify the resolutions that can be output and
input; where this is available a Resolutions tab will be shown on the main
screen. This tab will show the resolution database editor, and creation tool.
Figure 14 Resolution editor
There are 2 ways to create a resolution using this tool. The easiest, shown on
the New resolution tab at the side, allows you to create a new resolution using