FIELD: image encoding means.
SUBSTANCE: decoding a stream, in which an image of a standard dynamic range is encoded, to obtain a decoded image of a standard dynamic range and color metadata associated in a given stream with a coded picture of a standard dynamic range. At that, metadata of color contains at least maximum luminance of display for mastering display, used during mastering of high dynamic range image, from which the above image of standard dynamic range encoded in said flow was obtained. Reconstructing said high dynamic range image from a decoded image of a standard dynamic range and color metadata by inverse conversion of luminance signal of decoded image of standard dynamic range in response to said maximum luminance of display of said mastering display in order to obtain a high dynamic range luminance signal.
EFFECT: technical result consists in improvement of encoded image quality.
20 cl, 12 dwg
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