try scanning something with some large sections of solid color in it- this basically gray photo is hard to work from.
allan On Sat, Aug 30, 2008 at 3:27 PM, <jgobuzon-lm at yahoo.com> wrote: > Thank you Allan > > I was completely lost, but now I have a new course to continue digging. > > > --- El s?b 30-ago-08, m. allan noah <kitno455 at gmail.com> escribi?: > >> 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: s?bado, 30 agosto, 2008, 12:48 pm >> if you look at the taillight in the left image, i think you >> can see >> the Cr data. i've not had time to dig anymore. >> >> allan >> >> On Sat, Aug 30, 2008 at 12:04 PM, >> <jgobuzon-lm at yahoo.com> wrote: >> > 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 s?b 30-ago-08, m. allan noah >> <kitno455 at gmail.com> escribi?: >> > >> >> 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: s?bado, 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" >> > >> > __________________________________________________ >> > Correo Yahoo! >> > Espacio para todos tus mensajes, antivirus y antispam >> ?gratis! >> > Reg?strate ya - http://correo.yahoo.com.mx/ >> > >> >> >> >> -- >> "The truth is an offense, but not a sin" > > __________________________________________________ > Correo Yahoo! > Espacio para todos tus mensajes, antivirus y antispam ?gratis! > Reg?strate ya - http://correo.yahoo.com.mx/ > -- "The truth is an offense, but not a sin"
