On Thu, 18 Oct 2007, Kai-Uwe Behrmann wrote: > often a software does the profile creation with the transformed data you > obtained from taking shots with the camera of measured patches. For > instance with a IT8 test chart. But possibly you want more than this.
A fundamental assumption here is that camera operation is repeatable and not very sensitive to the environment. Typical consumer cameras are not very repeatable and are very sensitive to the environment because they always try to adjust for the best looking high-contrast image. So the camera makes many automatic adjustments based on what it sees. Given the same scene, just removing the test chart or changing the camera view slightly is likely to cause a change in behavior. Scientific cameras, or professional cameras with an entirely manual mode, are likely much more repeatable, at the expense of far more work on the part of the user to get a good shot. Bob ====================================== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
