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Re: xPLRioNet - A Challenge
- Subject: Re: xPLRioNet - A Challenge
- From: "Keith Doxey" <ukha@xxxxxxxxxxx>
- Date: Fri, 21 Jan 2005 22:56:52 -0000
--- In ukha_xpl@xxxxxxx, "Tony Tofts" <tony@x> wrote:
> I'm currently taking a pass thru the bitmap, taking an average of
the RGB
> per pixel, and then an overall average.
>
> Then when rendering if the total of rgb < than the average it's
black, else
> it's white.
>
> But I think it could be a lot better. I believe you have to do
stuff like
> giving each RGB part a different weighting?
>
> So the challenge is... Can someone find a (not too complicated)
formula to
> give a decent image please?
>
Hi Tony,
Most of the brightness of a picture is in the GREEN component.
PaintShopPro gives 4 options when reducing to two colours allowing
you to select between Grey/Red/Green/Blue component of the original
image.
I tried this and you can see the results at
http://www.diyha.co.uk/xpl/index.html
Regards
Keith
xPL Links: http://www.xplproject.org.uk http://www.xplhal.com http://www.xpl.myby.co.uk
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