[sane-devel] backend Kodak i260 Image depth 48 bits stream. How is coded?

[jgobuzon-lm at yahoo.com]

I'm going to test recode the left ghost image assuming YCbCr and YUV inclusive. 

   YCbCr to RGB

    R = Y + 1.403*(Cr - 0.5)
    G = Y - 0.344*(Cr - 0.5) - 0.714*(Cb - 0.5)
    B = Y + 1.773*(Cb - 0.5)

  YUV to RGB

   R = Y + 1.140V
   G = Y - 0.395U - 0.581V
   B = Y + 2.032U

  Just to see what will happen.


--- El sáb 30-ago-08, m. allan noah <kitno455 at gmail.com> escribió:

> De:: m. allan noah <kitno455 at gmail.com>
> Asunto: Re: backend Kodak i260 Image depth 48 bits stream. How is coded?
> A: jgobuzon-lm at yahoo.com
> Cc: sane-devel at lists.alioth.debian.org, jose.chaves at sat.gob.mx
> Fecha: sábado, 30 agosto, 2008, 8:17 am
> On Sat, Aug 30, 2008 at 10:09 AM, m. allan noah
> <kitno455 at gmail.com> wrote:
> > i've never used photoshop CS, but i slapped a pnm
> header on top of the
> > raw file saying that it was 8 bit grayscale, 3600 x
> 2200, and i see
> > the car pretty clearly, with some weird stretched
> ghost image on top.
> > the ghost might be some sort of high bit count Y
> channel?
> >
> > allan
> >
> 
> or for an even better look, try saying it is 8 bit
> grayscale, with
> 7200 x 1088. you get two very nice views of the car, which
> need to be
> interlaced in some fashion to get the final image.
> 
> allan
> -- 
> "The truth is an offense, but not a sin"

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