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

A technology of stereoscopic images and fragile watermarks, which is applied in stereoscopic systems, image communication, television, etc., and can solve the problems of rare semi-fragile watermarking methods and the need for further improvement of image transparency.

Inactive Publication Date: 2013-04-03
NINGBO UNIV
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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-fragil...

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

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Embodiment Construction

[0134] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0135] Since the stereoscopic image embedded with the watermark is finally perceived by human eyes, in order to keep the perceived quality of the stereoscopic image unchanged or little changed, the present invention proposes a stereoscopic Image semi-fragile watermarking method, which uses the relationship between stereo images, and embeds positioning watermarks in the left image of stereo images on the basis of the existing binocular Just-Noticeable-Difference (BJND) model, so that The transparency of watermarking, robustness to accidental attacks, and vulnerability to malicious attacks are well balanced.

[0136] A semi-fragile watermarking method for stereoscopic images based on binocular just detectable distortion proposed by the present invention, which includes the following steps:

[0137] ① At the watermark embedding end, record the s...

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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 ...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N13/00H04N19/176H04N19/467H04N19/597
Inventor 蒋刚毅王晶郁梅骆挺邵枫彭宗举
Owner NINGBO UNIV
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