Patent ID: 9190014
Filing Date: 2015-11-17
Classification: G09G,H04N

Abstract:
1. A method for encoding additional information in image data by video encoder, the image data comprising pixel values defining a plurality of in-gamut points within a gamut for a plurality of pixels, the method of comprising: selecting one or more of the pixels; and mapping one ore more pixel values of each of the selected pixels to one or more corresponding mapped values; wherein at least one of the one or more mapped values defines an out-of-gamut point and at least one of the one or more mapped values corresponds to one or more bits of the additional information; wherein at least one of the one or more mapped values defining the out-of gamut point corresponds to at least one of the one or more pixel values; wherein mapping the at least one pixel value mapped to the at least one mapped value defining the out-of-gamut point comprises copying a plurality of lower order bits of the at least one pixel value to the at least one mapped value.