Patent ID: 7064860
Filing Date: 2006-06-20
Classification: H04N

Abstract:
1. A method for selectively characterizing a color marking device relative to a plurality of viewing illuminants for enhanced output image accuracy when illuminated by a predetermined one of the plurality, the method comprising steps of: building a device transformation profile for mapping a device independent color description signal to a device dependent color description signal, wherein the profile includes a multi-dimensional look-up table (LUT) and a first set of tone reproduction curves (TRCs), and wherein the first set of TRCs is calibrated for a first selected viewing illuminant comprising a selected light source for illuminated viewing of an output image generated by the color marking device; building a second set of TRCs characterized for a second viewing illuminant; and, responsive to a user instruction for outputting an image intended for illumination by the second viewing illuminant, adjusting the transformation profile to effect transforming an input color representation signal of the image with the LUT and the second set of TRCs.