Method and apparatus for data hiding in prediction parameters
AssigneeHuawei Technologies Co., Ltd.
InventorsAlexey Konstantinovich FILIPPOV, Vasily Alexeevich RUFITSKIY
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Abstract
A decoding device and a decoding method for decoding a target information from a bitstream of video data, wherein the bitstream comprises a prediction parameter encoded in the bitstream. The decoding device is configured to calculate a randomized host signal based on the prediction parameter and a pseudo-random signal, and to apply a check function to the randomized host signal and thereby obtain the target information. An encoding device and an encoding method, and computer-readable storage media for encoding and for decoding are also disclosed.
Claims16
A decoding device for decoding a target information from a bitstream of video data, wherein the bitstream comprises a prediction parameter encoded in the bitstream, the decoding device comprising one or more processors configured to:
- calculate a randomized host signal based on the prediction parameter and a pseudo-random signal, and
- apply a check function to the randomized host signal and to thereby obtain the target information.
A coding device for encoding a target information in a bitstream of video data, the coding device comprising one or more processors configured to:
- for a plurality of candidate prediction parameter values, calculate a randomized host signal based on the candidate prediction parameter value and a pseudo random signal,
- select from the plurality of candidate prediction parameter values a target prediction parameter value for which a check function yields the target information when the check function is applied to the randomized host signal calculated for the target prediction parameter value, and
- encode the target prediction parameter value in the bitstream.
A method for decoding a target information from a bitstream of video data, wherein the bitstream comprises a prediction parameter encoded in the bitstream, the method comprising:
- calculating a randomized host signal based on the prediction parameter and a pseudo random signal, and
- applying a check function to the randomized host signal to thereby obtain the target information.
A method for encoding a target information in a bitstream of video data, the method comprising:
- for a plurality of candidate prediction parameter values, calculating a randomized host signal based on the candidate predictor parameter value and a pseudo random signal,
- selecting a target prediction parameter value from the plurality of candidate prediction parameter values for which a check function yields the target information when the check function is applied to the randomized host signal calculated for the selected target prediction parameter, and
- encoding the target prediction parameter value in the bitstream.
Dependencies are inferred from the claim text.