Watermarks refer to translucent logos and icons added to videos or pictures to prevent others from stealing them.

Watermark is a digital mark added to data such as images, videos, and texts to protect the security and integrity of the data. Watermarks usually contain identification information such as data source, copyright information, and serial numbers, which can be used to prevent data theft, tampering, and unauthorized copying.

Watermarks can be inside or outside the data, visible or invisible, and can be numbers, text, images or other forms of identification. Watermarks are often protected using encryption technology to ensure they are secure and difficult to tamper with.

Watermarks are mainly used in fields such as copyright protection, anti-counterfeiting identification, data tracking and authentication. In terms of digital rights management, watermarks can be used to prove the copyright ownership of data and prevent illegal copying. In terms of anti-counterfeiting identification, watermarks can be used to identify and verify the authenticity of products.

The development of watermarks

The development of watermarks can be traced back to the banknote manufacturing technology in Italy in the 13th century. At that time, banknote manufacturers were using watermarks to prevent counterfeit banknotes. Over time, watermark technology continues to develop and is gradually used in various fields, such as international documents, product trademarks, securities, etc.

In modern times, watermarking has become an important means of digital copyright protection technology. Digital watermark technology can protect the copyright, authenticity and integrity of digital media by embedding watermark information in digital media such as images, videos, and audios. Watermark technology is still developing and faces many challenges and opportunities, such as how to better protect the security of watermark information and how to maintain the reliability and stability of watermarks in various complex environments.