Patent ID: 9584811
Date: 2017-02-28
CPC Classifications: H04N

Claim:
1. A method for coding a sequence of input enhanced dynamic range (EDR) images comprising image blocks, the method comprising: receiving said sequence of input enhanced dynamic range (EDR) images; computing block-complexity metrics for one or more of the image blocks in at least one input image in the sequence of input EDR images, said block-complexity metrics being representative for a variation in pixel values; constructing a first set of the image blocks, the first set comprising image blocks for which their computed block-complexity metric satisfies a predetermined criterion; for each block in the first set of the image blocks determining an optimal slope (k(j,n)) according to a slope generation function for a linear quantization model, said optimal slope representing a minimal slope of the linear quantization model for said block; for each input code word (v computing a sum (k) of all the envelope slopes for all code words; and for each input code word: