
I was curious to see how well the Amiga in HAM mode could reproduce a 24-bit
real color image, so this is what I came up with.  I scanned these
pictures with an Eikonix 1435 35mm slide scanner hooked up to a Sun
Microsystems workstation.  The images were scanned originally at the
full resolution of the scanner, 4096x2800 pixels at 36-bits per pixel.
The images were cropped, gamma corrected, scaled, and converted to Amiga
IFF HAM files on the Sun, then downloaded over a modem connection to my
Amiga at home.

No color correction was performed to account for the (significant)
differences between the JVC monitors (which the data is corrected for)
I use at work, and the Commodore 1084S I have at home.  Also,
the program I wrote to perform the conversion does not fully implement the
algorithm I originally developed for this purpose, so there is certainly
room for improvement.

Most of these images were scanned from negatives, the only slides I
scanned were the Porsche 930, the DC-10, and the Sante Fe locomotive.
No attempt was made artificially enhance these images, other than unsharp
masking.  However, in the future I will probably perform some histogram
equalization as it certainly helps those originals which are "flat" in
appearance, and those which were under- or over-exposed.


In the "Source" directory is a program I wrote to load these pictures,
as I couldn't find an ILBM loader which handled overscan, and ran from
the workbench.


Jonathan Hue
UUCP: uunet!jvc!jonathan
