Patent ID: 6636646
Filing Date: 2003-10-21
Classification: G06T

Abstract:
A method of calculating a brightness balance value for an original image having contribution from the visible spectrum of wavelengths including red, green, and blue wavelengths comprising the steps of:a) generating one or more pseudo luminance values from the original image wherein (i) the pseudo luminance value contribution from the red wavelengths is greater than or equal to the contribution from the green wavelengths; (ii) the pseudo luminance value contribution from the green wavelengths is greater than the contribution from the blue wavelengths; (iii) the pseudo luminance value contribution from the red and green wavelengths are greater than zero; and (iv) the pseudo luminance value contribution from the blue wavelengths is greater than or equal to zero; and b) using the pseudo luminance values to calculate a brightness balance value.