Methods and systems for high dynamic range video coding
First Claim
Patent Images
1. A method for encoding video data, said method comprising:
- a) receiving a high dynamic range (HDR) image sequence;
b) creating a standard dynamic range (SDR) image sequence from said HDR sequence;
c) encoding said SDR image sequence with an SDR encoder;
d) transmitting said encoded SDR sequence to a recipient;
e) decoding said encoded SDR sequence;
f) inverse tone mapping said decoded SDR sequence to form a decoded HDR sequence;
g) combining said decoded SDR sequence data, said decoded HDR sequence data and said HDR image sequence to form HDR residual data; and
h) transmitting said HDR residual data to said recipient.
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Abstract
Embodiments of the present invention comprise methods and systems for high dynamic range video coding.
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Citations
15 Claims
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1. A method for encoding video data, said method comprising:
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a) receiving a high dynamic range (HDR) image sequence; b) creating a standard dynamic range (SDR) image sequence from said HDR sequence; c) encoding said SDR image sequence with an SDR encoder; d) transmitting said encoded SDR sequence to a recipient; e) decoding said encoded SDR sequence; f) inverse tone mapping said decoded SDR sequence to form a decoded HDR sequence; g) combining said decoded SDR sequence data, said decoded HDR sequence data and said HDR image sequence to form HDR residual data; and h) transmitting said HDR residual data to said recipient. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for decoding video data, said method comprising:
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a) receiving an encoded standard dynamic range (SDR) sequence and high dynamic range (HDR) residual data; and b) decoding said SDR sequence independently of said HDR residual data. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A video codec, said codec comprising:
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a) a receiver for receiving a high dynamic range (HDR) image sequence; b) an SDR tone map for creating a standard dynamic range (SDR) image sequence from said HDR image sequence; c) an SDR encoder for encoding said SDR image sequence; d) a decoder for decoding said encoded SDR sequence; e) an inverse tone map for converting said decoded SDR sequence into a decoded HDR sequence; f) an HDR residual encoder for combining said decoded SDR sequence data, said decoded HDR sequence data and said decoded HDR image sequence to form HDR residual data; and g) a transmitter for transmitting said encoded SDR sequence and said HDR residual data to a destination.
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15. A video codec, said codec comprising:
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a) a receiver for receiving an encoded SDR sequence and high dynamic range (HDR) residual data; b) an SDR decoder for decoding SDR image data from said SDR sequence; c) an HDR inverse tone map for creating an estimated HDR sequence from said decoded SDR image data; d) an HDR residual decoder for decoding residual data from the HDR residual data; and e) a combiner for combining said estimate HDR sequence and said decoded HDR residual data.
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Specification