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

Claim 12:
13. A method of color-measuring comprising:
rendering a digital image with a rendering device thereby obtaining a printed copy of said digital image; and
color measuring said printed copy of said digital image for color analysing on said rendering device, said color measuring 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 a gamut boundary of a digital image;
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).