Patent ID: 11946804
Assignee: AGFA NV
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method of color-measuring a color of a printed copy of a digital image, the digital image having a gamut boundary, the method comprising:
measuring a color by a color-measuring-device capable of color-measuring in a plurality of spectral ranges (r1 . . . rQ), wherein said color is measured in a sub-set (s1 . . . sM) of said plurality of spectral ranges (r1 . . . rQ) and said sub-set (s1 . . . sM) is obtained by:
selecting another color within said gamut boundary;
determining corresponding spectral reflectance factors (v1 . . . vQ) of said selected other color for said plurality of spectral ranges (r1 . . . rQ); and
adding a spectral range (ri) from said plurality of spectral ranges (r1 . . . rQ) to said sub-set (s1 . . . sM), wherein the corresponding spectral reflectance value (vi) of said spectral range (ri) is larger than 10% of a maximum of said added spectral range (ri) minus a minimum of said added spectral range (ri).