Patent ID: 8867616

Claim:
An apparatus, comprising: an encoder for encoding picture data for at least a portion of a picture by generating an inter-layer residue prediction for the portion using a tone mapping function and an inverse tone mapping function, wherein the tone mapping function and the inverse tone mapping function perform a conversion of the inter-layer residue prediction from a residue domain to a pixel domain for bit depth scalability while maintaining a same bit depth representation, wherein said encoder generates the inter-layer residue prediction by performing motion compensation using an enhancement layer reference to generate an enhancement layer prediction, tone mapping the enhancement layer prediction to a base layer reference to generate a tone mapped prediction, bit up-sampling a base layer residue, combining the tone mapped prediction with the bit up-sampled base layer residue to obtain a sum, filtering the sum to obtain a smooth base layer reference, inverse tone mapping the smooth base layer reference to generate an inverse tone mapped prediction, and wherein said encoder encodes and transmits an error between the inverse tone mapped prediction and the picture.