On Thu, 21 Feb 2002, Mike Ressler wrote:
Actually, the better way to do this is (xv Postscript code)
gray = 0.32 * red + 0.5 * green + 0.18 * blue
or perhaps (NTSC)
gray = 0.30 * red + 0.59 * green + 0.11 * blue
Either gives a better match to a human's RGB to luminance
On Thu, 21 Feb 2002, Mike Ressler wrote:
> Actually, the better way to do this is (xv Postscript code)
>
> gray = 0.32 * red + 0.5 * green + 0.18 * blue
>
> or perhaps (NTSC)
>
> gray = 0.30 * red + 0.59 * green + 0.11 * blue
>
> Either gives a better match to a human's RGB to
On Thu, 21 Feb 2002, Asger K. Alstrup Nielsen wrote:
On Thu, 21 Feb 2002, Angus Leeming wrote:
and the problem is now defining an appropriate mapping from the colour
colourmap to a grayscale or monochrome one.
I'm not sure what the problem is, but if you want to convert from
color to
On Thursday 21 February 2002 5:55 pm, Mike Ressler wrote:
On Thu, 21 Feb 2002, Asger K. Alstrup Nielsen wrote:
On Thu, 21 Feb 2002, Angus Leeming wrote:
and the problem is now defining an appropriate mapping from the colour
colourmap to a grayscale or monochrome one.
I'm not sure
On Thu, 21 Feb 2002, Asger K. Alstrup Nielsen wrote:
> On Thu, 21 Feb 2002, Angus Leeming wrote:
> > and the problem is now defining an appropriate mapping from the colour
> > colourmap to a grayscale or monochrome one.
>
> I'm not sure what the problem is, but if you want to convert from
> color
On Thursday 21 February 2002 5:55 pm, Mike Ressler wrote:
> On Thu, 21 Feb 2002, Asger K. Alstrup Nielsen wrote:
> > On Thu, 21 Feb 2002, Angus Leeming wrote:
> > > and the problem is now defining an appropriate mapping from the colour
> > > colourmap to a grayscale or monochrome one.
> >
> > I'm
