Contrast and brightness adjustments can be made to a system tone
reproduction curve. These contrast and brightness adjustments can be made,
for example, by user, via a user input device, or alternatively,
automatically detected, based on an image analysis routine. By determining
one or more generic tone reproduction curves, and interpolating these tone
reproduction curves with the system tone reproduction curve, a new,
adjusted tone reproduction curve is produced. This allows for a
determination of the adjusted system tone reproduction curve as opposed to
calculating and restoring the families of system tone reproduction curves
adjusted for all the possible combinations of contrast and brightness.
