Brightness and Contrast

Marten van den Berg mons at
Mon Jan 14 05:36:01 EST 2002

op 13-01-2002 08:04 schreef Jeanne A. E. DeVoto op jeanne at

> At 2:18 AM -0800 1/12/2002, Marten van den Berg wrote:
>> I want to control the brightness and contrast of images within revolution.
>> Any suggestions how this can be done are welcome.
> Hmmmm. I don't have a ready-made recipe for this (yet)... but you can
> control the image data directly via the imageData property, and you might
> look into altering the brightness and contrast by directly manipulating the
> actual RGB data.
> --
> Jeanne A. E. DeVoto ~ jeanne at
> Runtime Revolution Limited - Power to the Developer!
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I could't find a description of the imageData property in my transcript
dictionary (I'm using rev 1.1).
When I try it in the message box the result is a single line of odd
characters. Probably the result is in binary code...

Can you give me a description of the imageData property and have you a
suggestion where to look for further information on how this manipulation is

thanks, Marten van den Berg

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