成都宇飞信息工程有限责任公司

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The 9th International Conference on Intelligent Information Hiding and Multimedia Signal Processing was held at Beijing University of Technology

The 9th International Conference on Intelligent Information Hiding and Multimedia Signal Processing was held at Beijing University of Technology

On October 16, the 9th International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIHMSP2013) was held at Beijing University of Technology. The conference was jointly approved by the Beijing Municipal Government and the International IEEE Organization, as well as the strong support of the National Natural Science Foundation of China, IEEE Beijing Branch and IEEE Tainan Branch. More than 100 well-known scholars from home and abroad attended the conference.　　Guo Guangsheng, President of Beijing University of Technology, Pan Zhengxiang, Founder of IIHMSP Conference and Chairman of the Conference Program Committee, Jia Kebin, Chairman of the Conference and Dean of the School of Electronic Control, and Zhou Mengqi, Head of IEEE Beijing Branch

2023-01-16

Research on information hiding technology based on CHIRP signal

Research on information hiding technology based on CHIRP signal

Digital watermarking technology is an emerging and effective digital cryptography technology to combat those serious illegal digital media communication behaviors. This technology can make up for the shortcomings of traditional encryption methods and make it a hot technology in the field of multimedia information copyright protection. In this paper, a time-frequency domain digital watermarking algorithm based on fractional order Fourier transform is proposed, and the watermark signal is a one-dimensional chirp signal, that is, a chirp signal. The embedding and detection of watermarks are in the time-frequency domain. Because the chirp signal exhibits pulsed characteristics in the FRFT domain as long as the order of the transformation is correct, it is only necessary to observe whether there is an impulse characteristic during detection

2023-01-16

A simple and easy spatial domain image information hiding technology

A simple and easy spatial domain image information hiding technology

The watermark information is randomly added to each image block, rather than adding the watermark information to the image block described from top to bottom and left to right, for two main reasons: first, to prevent the attack may completely cut off the image part containing the watermark so that the watermark cannot be extracted, and to ensure that the watermark is not continuously cut when the image is cut, and the overview of the watermark image can also be observed from a visual point of view; Second, the random addition of watermark information that relies on the key is also considered from the perspective of watermark security.　　The implementation of random watermark embedding is as follows: let the size of the original image be M points × N points, by dense

2023-01-16

The Film Bureau of the State Administration of Press, Publication, Radio, Film and Television on strengthening the use of digital watermarking technology

The Film Bureau of the State Administration of Press, Publication, Radio, Film and Television on strengthening the use of digital watermarking technology

Notice of the Film Bureau of the State Administration of Press, Publication, Radio, Film and Television on Strengthening the Use of Digital Watermarking Technology and Strictly Protecting Film Copyright Yingzi [2015] No. 581 Film Digital Program Management Center of the State Administration of Press, Publication, Radio, Film Production, Film Distribution and Projection Association: At present, the infringement and illegal acts of cinemas illegally recording and illegally disseminating films through the Internet have seriously infringed the legitimate rights and interests of film owners and hindered the healthy and sustainable development of the film industry.　　In view of the fact that "digital watermarking" is an effective technical means to track pirated information on films, for this reason, each of the electricity

2023-01-16

Overcome the thorns, pave the Yangguan Avenue, build nests and attract phoenixes, and share the soaring tomorrow

Overcome the thorns, pave the Yangguan Avenue, build nests and attract phoenixes, and share the soaring tomorrow

——Hua Jianhe, Chairman of Chengdu Yufei Company, delivered a speech on New Year's Day 2016 The timing changes, leaving the footprints of the strivers moving forward; Beginning over again, bringing infinite hope to pioneers.　　The past year has been a year in which Yufei Ren, represented by Professor Li Bingfa, has been focusing on the research and development and application of digital watermarking technology for 22 years, always standing at the forefront of digital watermarking, leading the world in digital watermarking, clearing layers of academic fog, breaking through many technical barriers, and moving from confusion to firmness; With the management team with Huajianhe as the core, the mission is shouldered, leading Yufei people to overcome difficulties, go forward and move forward with difficulties, from failure to success, from victory to victory

2023-01-16

2016 Yufei Spring Festival holiday arrangement!

2016 Yufei Spring Festival holiday arrangement!

All members of Yufei wish everyone a happy Chinese New Year! Year of the Monkey!　　Yufei holiday time: February 5th - February 14th, February 15th official work!

2023-01-16

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Current applications

2023-01-16

Digital watermark features?

2023-01-16

What is a digital watermark?

2023-01-16

The bank deposit certificate was found to be fraudulent one year later, and 200 million deposits disappeared, and the bank said it did not know

2023-01-16

Digital watermarks are used in the field of information security

2023-01-16

Research on image-based information hiding and information detection technology

2023-01-16

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