Introduction - If you have any usage issues, please Google them yourself
With the aid of computers, digital scanners, printers and other electronic devices, digital information can be easily and quickly transmitted to the desired place. The consequent side effect is that these digital forms of data, documents, or works make malicious individuals and groups likely to copy and disseminate copyrighted content without permission from the works owner. Because the traditional cryptography can not completely solve the copyright protection problem, in recent years, a new type of copyright protection technology - digital watermarking technology has been put forward internationally.