Abstract
In today's era, the digital representation of information allows people to receive
information from the original offline channel to the online gradually. Now the
development speed of digital media is amazing, the development of digital industry
continues to flourish, which makes the transmission of information faster, eliminates
the barriers to information, and gives people a more pleasant information acquisition
experience. With the continuous development of the digital industry, digital
information, digital music, movies and so on will also be impacted by security
problems due to the high-speed networking. The rampant piracy is the frequent
infringement of the entire digital multimedia, which greatly affects the personal
interests of the creator. How to ensure the security of the network and how to protect
the rights and interests of digital media is one of the highly concerned content at
present. Digital watermarking technology has become a very good means to protect
the copyright of authors. This paper studies the relevant literature of digital
watermarking, and improves the security of digital watermarking by adding the
wavelet transform algorithm. By decomposing the image and the wavelet, the
watermarking is embedded in a multi-level way, which strengthens the security
strength of the watermarking. This time, through the development of B/S system with
Python technology, image watermark addition and detection can be achieved in the
website system, which achieves a good function application and provides some
research experience for the application of digital encryption.
Keywords: Image digital watermarking; Python technology; wavelet transform