MV-HEVC Coding Video Information Steganography Method Based on Advanced Residual Prediction Weighting Coefficient

Abstract

The invention discloses a MV-HEVC encoded video information steganography method based on high level residual prediction weighting coefficient. The step for embedding secret message includes: conducting entropy decoding on a MV-HEVC video which is to be embedded with the secret message; selecting an encoding unit which meets conditions, and based on the bit of the secret message, correcting the high level residual prediction weighting coefficient of the encoding unit; detecting parallax vector error diffusion on the corrected encoding unit which uses the Skip mode; re-encoding the prediction residual of a non-Skip encoding unit and a Skip encoding unit which does not generate parallax vector error diffusion; and re-entropy encoding the corrected video. The step for extracting a secret message includes: conducting entropy decoding on the MV-HEVC video which is to-be-embedded with the secret message; selecting an encoding unit which meets conditions, determining the bit of the secret message based on the high level residual prediction weighting coefficient; saving the bit of the secret message that is extracted to the bit stream of the secret message; after the extraction of all the bits, converting the bit stream of the secret message to a corresponding format files and outputting the format files. The method herein applies the high level residual prediction weighting coefficient to concealing information, and can effectively and quickly embed and extract the secret message.

Description

technical field [0001] The present invention relates to the technical field of information steganography using digitally coded video as a carrier, in particular to a multiview-High Efficiency Video Coding (MV-HEVC) steganography method based on advanced residual prediction weighting coefficients. Background technique [0002] Information steganography realizes covert communication by hiding secret messages in carrier files and transmitting them. Three-dimensional coded video has a large amount of data, high redundancy, and is widely used, which is a good carrier of information steganography. MV-HEVC is an extension of the new video coding standard H.265 / HEVC on multi-view video coding, which can realize efficient compression coding of multi-view video. With the popularity of 3D encoded video, MV-HEVC is playing an increasingly important role in multimedia information technology, so it is of great significance to study information steganography methods based on MV-HEVC encod...

AI Technical Summary

Problems solved by technology

Since the MV-HEVC encoding process is more complex, 3D H.264-based multi-view video coding steganography algorithms usually cannot be directly used for MV-HEVC encoded video

So far, the information steganography method based on MV-HEVC encoded video has not been reported

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