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-
- HAM to Greyscale picture converter V1.0
- ---------------------------------------
-
- This is a very simple utility to convert a HAM picture into either
- 16 or 32 colour greyscale pictures. It does not use any AGA graphics
- modes, and achieves 32 shades of grey by cheating. The 32 colour palette
- if of the form
-
- Colour R G B
-
- 0 0 0 0
- 1 1 1 0
- 2 1 1 1
- 3 2 2 1
- 4 2 2 2
- 5 3 3 2
- 6 3 3 3
-
- etc.
-
- The means you pictures have a slight yellow tinge, like old black and
- white photographs, but does reduce the loss of colour definition in
- converting from ham's 4096 colours, which means 48 different brightness
- levels.
-
- You can of course change the colours in the palette with any art package
- or programming language that loads IFF 16/32 colour pictures.
-
-
- Usage:
-
- When you run the program, an AMOS file selector appears. Select the IFF
- HAM picture you wish to convert, and it will be loaded. Press Quit, and
- the program ends.
-
- Once the file is loaded, you can scroll the picture if it is larger than
- the screen size by moving the mouse pointer to the appropriate edge of
- the screen. To begin colour conversion, press either the left mouse button
- for conversion to 16 colours, or the right mouse button for conversion to
- 32 colours.
-
- When the picture has been converted, you can scroll around the converted
- image as before my moving the mouse pointer. You can also switch between
- the converted image, and the original, by pressing the left mouse button.
-
- To save the converted image, press the right mouse button, and enter a
- filename to save the IFF 16/32 colour picture to. Once the file is saved,
- the program will quit. To quit without saving, press the right mouse
- button, then the quit button in the file selector.
-
- NOTE: This program can be quit while not in a file selector by pressing
- Ctrl-C.
-
-
-
- Distribution:
-
- Whatever. I doubt this will make humungus amounts of cash.
-
- Send Bugs / Suggestions To:
-
- - Your local elected government representative
-
- - Your local non-elected government representative (For those
- not in democracies)
-
- - Oliver Stone. (If he thinks wild palms has a storly line, your
- bug reports should make the basis for a mini series)
-
- - Watchdog (Or any T.V. program in your country that exposes
- breaches of consumer safetry standards)
-
- - Me (ph@doc.ic.ac.uk)
-
-