METHOD AND APPARATUS FOR ENCODING VIDEO COLOR ENHANCEMENT DATA, AND METHOD AND APPARATUS FOR DECODING VIDEO COLOR ENHANCEMENT DATA

摘要

Reproduction of highly sophisticated visual intensity and contrast than the conventional eight bit color depth (color depth) are more and more used, induces the development of an enhanced dynamic range, sometimes referred to as the high bit depth. M N, and both are the same spatial resolution that has a first of the M bits of the RGB pixels of the lower bit depth image (IM _BL) and the second of the N bits of the RGB pixels of the high bit-depth image (IM _EL) for encoding to for how the first and second video image of a color histogram (Hist _BL, Hist _EL) on the base by a first transfer function (LUT _inter) for generating a step, a first transfer function (LUT _inter) on the base by the second transfer function (LUT _final) to create a step, the second transfer function (LUT _final) to the first video image to apply to step a includes, converting the first video image (IM _{TR, BL)} is generated and, the remaining ( calculate the IM _res) and encodes, and the first video image (IM _BL), and the encoding encoded first video image (IM _BL), the second transfer function (LUT _final transmits a) and the encoded difference. ; Bit depth, the video image, the transfer function, the histogram smoothing, the probability mapping