Watermark embedding and watermark extraction method, device and equipment
A watermark embedding and watermarking technology, which is applied in the fields of watermark embedding, devices, watermark extraction methods, electronic equipment and storage equipment, can solve problems such as insufficient embedding capacity, inability to effectively apply business scenarios, and low degree of anti-scaling, etc., to achieve improved Effect of Anti-Zoom Attack Ability
Active Publication Date: 2021-11-02
ZHEJIANG UNIV
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, once the image is scaled and attacked, the existing image watermarking technology cannot be effectively applied to real business scenarios
The main reason is that the existing image watermarking technology for scaling attacks has an extremely insufficient embedding capacity, or the degree of anti-scaling is small
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0126] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar promotions without violating the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.
[0127] The first embodiment of the present application provides a watermark embedding method, which is combined below figure 1 , figure 2 Be explained.
[0128] Such as figure 1 As shown, in step S101, a reference image resolution corresponding to a first image is determined according to at least one preset reference image resolution; the first image is an image to be embedded with watermark information.
[0129] The watermark information refers to identification information to be embedded into the first image. ...
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
Login to View More Abstract
The present application discloses a watermark embedding method, including: determining the reference image resolution corresponding to the first image according to at least one preset reference image resolution; the first image is an image to be embedded with watermark information; The resolution of the reference image corresponding to the first image is scaled to obtain the second image; the resolution of the second image is the same as the resolution of the reference image corresponding to the first image; embedding the watermark information to the frequency domain coefficients of the second image; performing inverse transformation processing on the frequency domain coefficients of the second image to obtain the second image embedded with watermark information; performing scaling processing on the second image embedded with watermark information to obtain the second image corresponding to the first image An image with the same resolution as the image. By adopting the above method, the anti-scaling attack capability of the watermark is improved.
Description
technical field [0001] The present application relates to digital watermark technology, in particular to a watermark embedding method, device, electronic equipment and storage equipment. The present application also relates to a watermark extraction method, device, electronic equipment and storage equipment. Background technique [0002] Today, people can conveniently transmit digital information to all parts of the world with the help of electronic devices such as computers and scanners. But the subsequent side effect is that the transmission of data files through the network makes it possible for malicious people to copy and disseminate copyrighted content without the permission of the owner of the work. Therefore, how to implement effective copyright protection, traceability and copyright protection in the network environment Information security means become an imminent reality. Watermark technology is an effective technical means to solve the above problems. The anti...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/00
CPCG06T1/0057G06T2201/0052
Inventor 刘永亮田冬陆哲明
Owner ZHEJIANG UNIV