[filmscanners] RE: Vuescan-Adjusting Color Balance

["" <laurie@advancenet.net>]

very well, in part, that is why I said "it depends." :-)  I noted that my
answer was based on Photoshop and not how a scanner samples for starters.  I
did this intentionally taking my cue from the origianal post which mentioned
specifically "3x3" samples.  I also said "it depends" based on the fact that
within Photoshop, like you note, one can also have a 5x5 matrix (other
software may allow variable settings)

-----Original Message-----
From: filmscanners_owner@halftone.co.uk
[mailto:filmscanners_owner@halftone.co.uk]On Behalf Of Julian
Vrieslander
Sent: Thursday, September 05, 2002 2:49 PM
To: laurie@advancenet.net
Subject: [filmscanners] Re: Vuescan-Adjusting Color Balance


On 09/05/02 2:42 PM, "laurie@advancenet.net" <laurie@advancenet.net> wrote:

> I would suspect that the answer is "it depends;" In your example it would
be
> three pixels in the horizontal and three pixels in the verticle, I would
> suspect for a 3x3 sample.  However, I am basing this on how Photoshops
> eyedropper color smpler works and not on how a scanner samples.

For Photoshop, this is adjustable, in the toolbar.  You can set the
eyedropper to sample a single pixel, or the average of a 3x3 or 5x5 matrix
of samples around the click point.

In any case, this feature has nothing to do with how a scanner samples raw
data.  It is simply a design choice for one feature of the user interface in
an image editing program.

--
Julian Vrieslander <julianv@mindspring.com>

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