| 摘要 |
To allow improved high dynamic range image encoding, we describe an image encoding unit (551) arranged to encode a high dynamic range image (IM_HDR-in) comprising: a first receiver (901) for receiving a lower dynamic range (SELR); a first code mapping unit (904) arranged to encode in a first image (Im_1) all pixels of the high dynamic range image (IM_HDR-in) with luminances within the lower dynamic range (SELR); a second receiver (902) for receiving a maximal redundancy (MAXRED), which specifies to which amount luminances already encoded in the first image (Im_1) need to be redundantly encoded again; an image processing unit (903) arranged to determine, based upon the maximal redundancy (MAXRED), which pixels of the high dynamic range image (IM_HDR-in) need to be encoded in a second image (Im_2); a second code mapping unit (905) arranged to encode in the second image (Im_2) luminances of the pixels of the high dynamic range image (IM_HDR-in) which need to be encoded in the second image (Im_2); and a formatter (906) arranged to output the first and second image as a high dynamic range encoding S(Im_1, Im_2), and related realizations such as transcoders, decoders, signals, etc. |
