Patent ID: 8576445
Filing Date: 2013-11-05
Classification: H04N

Abstract:
1. A computer implemented method for processing an input high dynamic range (HDR) image to generate an output image to be output by an output device, the method comprising: (a) mapping colors of the input HDR image from a first color space to a second color space using a tone-mapping filter, the second color space being an extended RGB color space; (b) converting the colors of the image from the second color space to a third color space, the third color space being a device independent color space; (c) scaling the colors of the image in the third color space, including: (d) generating a gamut mapping which maps a gamut of the image in the third color space after they have been scaled in step (c) to a gamut of the output device; and (e) converting the colors of the image, after they have been scaled in step (c), from the third color space to a fourth color space using the gamut mapping generated in step (d), to generate an output image.