Re: pixel information

Hi Bob,

Thanks for the info. I understand that most CNC laser control
the "depth" through the number of laser pulses - darker shade = more
pulses. Wonder if it is possible to control "depth" via feedrate,
darker = slower, brighter = faster. Seems to my layman's mind that
this will be much more difficult.

Peter

--- In CAD_CAM_EDM_DRO@y..., "Bob Campbell" <bob@c...> wrote:
> Peter,
>
> There are a number of programs that will look at the gray scale
value (1 to
> 256) and set a different Z depth for each level. Kern lasers is
using
> Cimagrafi to set the different power levels for their lasers. For
them it
> works great.
>
> What you are looking for would be a great application for a VBA
program.
> Programs like Corel Draw have VBA support.
>
> Bob Campbell
>
> ----- Original Message -----
> From: <cadcamcenter@y...>
> To: <CAD_CAM_EDM_DRO@y...>
> Sent: Saturday, May 26, 2001 1:24 PM
> Subject: [CAD_CAM_EDM_DRO] pixel information
>
>
> > Hi List,
> >
> > There are CAM programs which turn graphics (bitmap etc) into
> > toolpaths converting color to z-depth, etc.
> >
> > If we have a digital image, how do we extract the color
information
> > (hue, saturation, brightness...) from it?
> >
> > To clarify further: For example, we have a greyscale map of USA
with
> > each State coloured a different shade of grey. Is there a way
(with
> > Photoshop, Wintopo, or other program) we can press a button so
that
> > the State with the color (eg brightness) value of 50 (or between
48
> > and 52) will be isolated (or highlighted)? Or if we placed a
cursor
> > over the area (pixel) and a pop-up balloon gives information on
the
> > color value of that area (pixel)
> >
> > Thanks
> >
> > Peter
> >
> >
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