lehtonen@IRO.UMontreal.CA (Timo Lehtonen) (02/19/91)
Does any one have an idea as to how I can print
a coulour `bitmap' (3 bits per RGB component = 512 coulours)
on an IBM inkjet printer which has 7 colours (red, green,
blue, cyan, magenta, yellow and black)? The printer has
a resolution of 200 dots per inch, and the images are
256 x 200 pixels.
A first approach was to consider each pixel in the image
as a 4x4 matrix, select a suitable combination of inkjet
colours and arrange them in an appropriate pattern in the
matrix so as to approximate the original image colour.
The problem with this approach is that in practice it
requires finding manually a suitable matrix for each of the
512 colours.
Some method based on the photo offset technique used by
newspapers to print colour photographs seems better.
Any info, guides to literature, algorithms, code!!,
etc. would be appreciated.
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Timo Lehtonen email: lehtonen@iro.umontreal.ca
tel: 514-735-7058
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