Method and device for embedding watermark in stereoscopic video and method for extracting watermark

Abstract

The invention discloses a method and device for embedding a watermark of a stereo video and a method for extracting the watermark of the stereo video. The method for embedding the watermark of the stereo video includes embedding a watermark identification sequence in a stereo video frame; obtaining a global parallax error between a left image and a right image of the stereo video frame, and obtaining a left matching image and a right matching image according to the global parallax error; obtaining a correlation coefficient between the left matching image and the right matching image, and generating an embedding mode coefficient according to a comparison relation between a correlation coefficient and watermark information; and a storage key which includes an embedded mode coefficient, the global parallax error and watermark information capacity. According to the method for embedding the watermark of the stereo video, through a zero-watermark technology which comprehensively utilizes a global parallax error characteristic of the stereo video, after the watermark information is embedded in the stereo video, video data is not damaged, the problem that a stereo video image is modified when a watermark image is embedded is avoided, and thus a video watching effect is not influenced.

Description

technical field [0001] The invention relates to the technical field of digital watermarking, in particular to a method and device for embedding watermarks in stereoscopic videos, and a method for extracting watermarks from stereoscopic videos. Background technique [0002] The development of Internet technology has made the dissemination of digital products extremely convenient, but at the same time, it also enables pirates to copy and disseminate unauthorized digital products at a very low cost, which has brought huge damage to copyright owners. Therefore, multimedia copyright protection has become a research hotspot. [0003] Digital watermarking technology is a new technology developed in recent years for digital product copyright protection and content authenticity and integrity certification. Digital watermarking technology embeds some information that can be used to mark copyright into digital carriers without affecting the original use value of digital products. Whe...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems in the related art that the stereoscopic video will be destroyed, transparency and robustness restrict each other, the present invention proposes a method and device for embedding a watermark in a stereoscopic video, and a method for extracting a watermark from a stereoscopic video, which avoids damage to the stereoscopic video , and has good robustness

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