Three-dimensional image semi-fragile watermarking method based on binocular just-perceived distortion

Abstract

The invention discloses a three-dimensional image semi-fragile watermarking method based on binocular just-perceived distortion, comprising the following steps of: firstly, extracting positioning watermarks of left and right images; then, determining embedded bit positions of the positioning watermarks on the left image according to a binocular just-perceived distortion value of the left image, so as to embed the positioning watermarks of the left and right images into the left image by layers; and finally, utilizing discrete cosine transform and JPEG (Joint Photographic Experts Group) quantitative compression to embed right image recovering information into the right image; and with regard to the left image, embedding recovering information after an exposure shielding region is compressed into the left image. The three-dimensional image semi-fragile watermarking method has the advantages that the method sufficiently utilizes the matching property of the left and right images so that the quality of a distorted three-dimensional image is further improved; and an experimental result shows that the method not only can accurately position a distorted region, but also can recover the content of the distorted region according to a relation of the left and right images, and the recovering information.

Description

technical field [0001] The invention relates to a digital watermarking technology, in particular to a semi-fragile watermarking method for stereoscopic images based on binocularly detectable distortion. Background technique [0002] Stereoscopic images / videos are very popular because they can bring people a more realistic scene experience, and at the same time, market application requirements also promote the rapid development of stereoscopic images / video technologies. With the continuous advancement of computer and network technology, attackers can easily copy, modify, edit and store multimedia content, making the content of these high-end resources questionable. How to authenticate stereoscopic image / video content has become an urgent problem to be solved. [0003] As a kind of information hiding technology, digital watermark technology provides a new solution for multimedia content authentication. Digital watermarking technologies for content authentication are divided ...

AI Technical Summary

Problems solved by technology

However, the three-dimensional digital watermarking methods mentioned above have the following problems: on the one hand, they mainly focus on the research of robust watermarking technology, and the research on semi-fragile watermarking methods and their applications is relatively rare; on the other hand, due to their insufficient Mining the characteristics of human visual perception, so the transparency of the image needs to be further improved

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