Patent ID: 7196735
Filing Date: 2007-03-27
Classification: H04N

Abstract:
1. A method for squeezing chroma values (C in ) of a digital image toward a preferred chroma value (C pref ) for the digital image, comprising: (a) receiving a digital image file, the digital image file including a plurality of pixels of color image data, each pixel of the color image data being defined by a hue value, a chroma value, and a lightness value; (b) selecting a chroma value (C (c) selecting a preferred chroma value (C (d) calculating a chroma change value (ΔC=C (e) calculating a chroma weight value (C (f) calculating chroma adjustment value (C (g) calculating a destination chroma value, (C (h) repeating, for each chroma value in the digital image file, the selecting of the chroma value from the digital image file, the calculating of the chroma change value, the calculating of the chroma adjustment value, and the calculating of the destination chroma value; and (i) generating a modified digital image file by replacing each chroma value in the digital image file with the associated calculated destination chroma value.