Video dual watermark method based on SVD and QR codes

A QR code and video technology, applied in the field of information hiding, which can solve the problems of sensitivity, low embedded watermark intensity, and long embedded messages.

Active Publication Date: 2016-02-03
深圳品阔信息技术有限公司
View PDF6 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of this algorithm are: the embedded message is longer than the time spent; it can only process simple stream format files; in order to meet the visibility of the watermark, the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Video dual watermark method based on SVD and QR codes
  • Video dual watermark method based on SVD and QR codes
  • Video dual watermark method based on SVD and QR codes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Embodiment 1: The present invention is described in detail through Embodiment 1 below.

[0087] Such as Figure 1 to Figure 4 As shown, the video double watermarking method based on SVD and QR code of the present embodiment comprises the following steps:

[0088] (1) watermark embedding, including the following steps in turn:

[0089] Arnold scrambling; original video preprocessing; grayscale watermark embedding; reconstruction; QR encoding of grayscale watermark text information; QR code embedding; specifically:

[0090] The watermark embedding step in the step (1) is specifically as follows:

[0091] (110) The original video in the camera lens is carried out into frames, in order to reduce the computational complexity and improve the computational efficiency, the red component (green component is also available) of the video frame is selected for histogram segmentation;

[0092] (111) Arnold scrambles the original grayscale watermark W into watermark W 1 , then for ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a video dual watermark method based on SVD and QR codes. The method comprises the steps of watermark embedding and watermark extracting. Watermark embedding comprises the steps of Arnold scrambling, original video preprocessing, grayscale watermark embedding, reconstructing, grayscale watermark text information QR coding and QR code embedding. Watermark extracting comprises the steps that a key1 is used to acquire a watermark carrier image; mark extracting and Arnold inverse scrambling are carried out; a key2 is selected, and the image block of the QR code is hidden; and the QR code is decoded to acquire verification text information. According to the invention, embedded dual watermarks have the advantage of small mutual interference and good robustness for common attacks; the QR code information is embedded into the image block which is highly invisible; the safety of a video watermark algorithm is enhanced; and the problem of single function of a single robust watermark algorithm is effectively solved.

Description

technical field [0001] The invention relates to information hiding technology, in particular to a video double watermark method based on SVD and QR codes. Background technique [0002] Network information technology has been developing rapidly all over the world, which greatly facilitates the communication and exchange between people. With the rapid development of Internet technology and digital multimedia technology, a large amount of multimedia data can be easily accessed, copied and disseminated by people through the network. Therefore, people pay more and more attention to finding an effective method to solve the copyright protection problem of multimedia data. The existing watermarking algorithms are not ideal. For example, based on the space-time multi-resolution characteristics of 3D wavelet transform, the spread-spectrum watermark is adaptively embedded into the 3D wavelet coefficients. The robustness is good, but the real-time performance is poor and The watermark...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06T1/00
Inventor 王喜崔杰姜海涛赵澍周仁才仲红
Owner 深圳品阔信息技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap