Patent ID: 7403565

Claim:
A method for encoding an information frame, comprising the steps of: dividing said information frame into a plurality of information regions, at least one of said information regions comprising at least one information parameter having associated with it a plurality of intra-region values bounded by upper and lower value limits defining a dynamic range of said information parameter; determining, for each of said at least one of said information regions, a respective maximal value and a minimal value of said at least one information parameter; remapping, for each of said at least one of said information regions and according to a single manipulation of the respective determined maximal and minimal values, at least one respective of said plurality of intra-region values of said at least one information parameter; and encoding each of said information regions; wherein said information frame comprises an image frame and said at least one information parameter comprises at least one of a luminance parameter and a chrominance parameter; wherein said steps of encoding and determining produce, respectively, an encoded image stream and an associated dynamic range enhancement stream; and wherein said step of remapping is performed in accordance with the following linear equation: TP=└OP *( TR/OR )+0.5┘ where: TP=Target Pixel; OP=Original Pixel; TR=Target Range; and OR=Original Range.