This reply was meant to go to the list as well: Begin forwarded message:
> From: Karl Heinz Kremer <k...@khk.net> > Date: July 7, 2004 8:41:12 PM EDT > To: Peter Mark Guevarra <pmsgueva...@yahoo.com> > Subject: Re: [sane-devel] use of ICC profiles > > Like so many great questions, your question can only be answered with > "depends...". :-) > > An ICC profile is a tool to color correct predictable color problems > of a device. So, if your scanner always produces the same wrong color > for the same input color, an ICC profile can help. For this to work, > you need software that can create an ICC profile based on a reference > image. What you usually do is scan e.g. an IT8 target > (http://www.targets.coloraid.de/), then feed the scan plus a > description of all the correct color values on the target to a > profiler (e.g. http://www.scarse.org). This will then create a target > for your scanner when it's used with exactly the same settings that > were used to create this calibration scan. > > If your color casts are not predictable (e.g. they depend on how long > the scanner's lamp has been on), an ICC profile will not help (you > could e.g. create one for "lamp was 5 minutes on", "lamp was 10 > minutes on", "lamp was 15 minutes on", ... and use the appropriate > profile, but this would be really stretching it). > > Karl Heinz > > > On Jul 3, 2004, at 3:42 AM, Peter Mark Guevarra wrote: > >> Hello, >> >> I'm quite confused with the use of the ICC profile. Is it really >> intended for the color correction of the image? For example, when >> you scan a yellow image and the output seems to be orange, can the >> ICC profile correct this one? >> >> Also, how can you post a reply in this forum so that it will fall >> under the same topic >> coz when I reply it always ends up being listed as if it is a new >> topic. Sorry about this =) >> >> Thanks, >> Peter >> >> >> >> >> --------------------------------- >> Do you Yahoo!? >> Yahoo! Mail Address AutoComplete - You start. We finish. >