成都宇飞信息工程有限责任公司

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Current applications

Current applications

Digital watermark products and technologies solve the four major problems of anti-counterfeiting traceability, information security, copyright protection and interactive marketing

2023-01-16

Digital watermark features?

Digital watermark features?

Security: tamper-proof and anti-counterfeiting; Objective and accurate detection; The false detection rate is extremely low Concealment: imperceptibility; Does not affect appearance; Does not affect normal use Flexibility: vulnerability; robustness Amount of information: does not affect the audio-visual effect of the carrier; A lot of information hidden

2023-01-16

What is a digital watermark?

What is a digital watermark?

Digital watermarking is a technology that enables information to be hidden through computer algorithms, that is, software technology rather than process technology and material technology. Digital watermarking technology can directly embed identification information (that is, digital watermark) into digital carriers (including multimedia and documents, etc.) without affecting its use value, and is subjectively and objectively not easy to be detected, with strong concealment functions.

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

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

Hangzhou, December 7 (Reporter Zhou Yifan) According to the Voice of China "News Evening Peak" report, recently, a number of Zhejiang listeners reported to the Voice of China that about a year ago, they opened accounts in several rural credit cooperatives in Binzhou City, Shandong Province to deposit money, and after the expiration date, everyone went to prepare to withdraw the money, but the bank told that the deposit certificate was fake, and the deposits on the account were missing.　　Some users reported the case to the local police, and it is understood that the current problem of rural credit cooperatives in Binzhou City involves Bincheng District, Zouping County and Boxing County, with a total amount of more than 200 million. How did the deposit certificate become a fake for the card and the money deposited at the counter?

2023-01-16

Digital watermarks are used in the field of information security

Digital watermarks are used in the field of information security

【Note】The tampering prompt watermark is mainly to detect the integrity and authenticity of the signal of the original file. The concealed logo watermark hides the important marks of confidential data and restricts the use of confidential data by illegal users.　　——Adopt content-based, non-cryptographic information hiding technology with digital watermarking as the core.　　——It has the characteristics of invisible information protection, covert management, invisible transmission, information encryption and decryption, and intelligent compression.　　- It is different from information encryption technology. Information encryption can only hide the content of confidential information, and cannot hide the existence of confidential information; And the digital watermark is the core of information camouflage, in the hidden machine

2023-01-16

Research on image-based information hiding and information detection technology

Research on image-based information hiding and information detection technology

Information hiding and information detection technology is developed in the mid-to-late 90s of the 20th century as an emerging interdisciplinary discipline in the field of information security. The main research content of this paper is information hiding technology and information detection technology based on digital images. In this paper, the basic concepts and basic theories of image information hiding technology are analyzed and discussed, and a large-capacity LSB algorithm is designed on the basis of studying the existing information hiding algorithms. The algorithm combines the masking characteristics of the human visual system to block the image to adaptively embed secret information. The algorithm has good concealment and large hidden capacity. In order to

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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