Patent ID: 7701462
Filing Date: 2010-04-20
Classification: H04N

Abstract:
1. A method of adjusting color saturation of a first color image comprising components of a first color space, said method being executed by an image processor and comprising: creating a color space transformation matrix; transforming the first color image into a second image using the transformation matrix, the second image having a plurality of long-wavelength (L), medium-wavelength (M), and short-wavelength (S) components; determining white point adaptation levels for each of the plurality of long-wavelength (L), medium-wavelength (M), and short-wavelength (S) components by the image processor; adjusting each of the plurality of long-wavelength (L), medium-wavelength (M), and short- wavelength (S) components by applying the associated white point adaptation levels to the plurality of long-wavelength (L), medium-wavelength (M), and short-wavelength (S) components; stretching the adjusted long-wavelength (L) components and the short-wavelength (S) components with respect to the adjusted medium-wavelength (M) component; applying the stretched L components and S components to the second image; and transforming the second image into a new image having components of the first color space, wherein each L component is stretched according to the equation L