Visual Basic, RGBColor....

Andreas Hoffman
#1 / 4

RGBColor....

hello world,

i build an application for visual research. for a common eye-sensitvity
test i require the maximum amount of greysteps.
the RGB() system seems to allow just 256 steps between white and black.
this is not sufficient for my application.
does anybody know a way to get a more details resolution.?

i would apprciate any comment.

thanks in advance

andreas

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Andreas Hoffmann
Institute of Hygiene and Applied Physiology
Swiss Federal Institute of Technology
ETH Center
CH-8092 Zurich
Switzerland

Phone : ++ 41-1-632 3987
Fax : ++ 41-1-632 1173

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Mon, 31 Aug 1998 03:00:00 GMT

Robert Woodco
#2 / 4

RGBColor....

Quote:

>i build an application for visual research. for a common eye-sensitvity
>test i require the maximum amount of greysteps.
>the RGB() system seems to allow just 256 steps between white and black.
>this is not sufficient for my application.
>does anybody know a way to get a more details resolution.?

You can't with SVGA hardware. Maybe you could use dithering.
--

When I was in school, I cheated on my metaphysics exam: I looked into
the soul of the boy sitting next to me.
-- Woody Allen

Tue, 08 Sep 1998 03:00:00 GMT

dougla
#3 / 4

RGBColor....

Quote:

>the RGB() system seems to allow just 256 steps between white and black.

this is not sufficient for my application.
does anybody know a way to get a more details resolution.?<

I don't think it's possible ... but not sure. If anyone knows how, I'd
like to know, too.

Regards,
Douglas

Tue, 08 Sep 1998 03:00:00 GMT

Andreas Hoffman
#4 / 4

RGBColor....

Quote:

> >does anybody know a way to get a more details resolution.?

> You can't with SVGA hardware. Maybe you could use dithering.Hey,

what do you mean by dithering?
andreas

--------------------------------------------------------------------
PLEASE RESPOND ALSO BY E-MAIL..!!
--------------------------------------------------------------------
Andreas Hoffmann
Institute of Hygiene and Applied Physiology
Swiss Federal Institute of Technology
ETH Center
CH-8092 Zurich
Switzerland

Phone : ++ 41-1-632 3987
Fax : ++ 41-1-632 1173

--------------------------------------------------------------------

Tue, 08 Sep 1998 03:00:00 GMT