Method for transmitting and receiving image series digital content as well as transmitter and receiver

Abstract

The invention discloses a method for sending image class digital contents and a method for receiving the image class digital contents, wherein the sending method is as follows: based on an encryption key, the digital image contents ready to be sent are encrypted; the encryption key is used as watermark information to be embedded in the encrypted digital image contents; and the encrypted digital image contents embedded with the watermark information are sent; the receiving method is as follows: the digital image contents are received; the watermark information containing the encryption key is picked up from the received digital image contents; based on the encryption key contained in the watermark information picked up, the received digital image contents are decrypted. In the technical proposal of the invention, the image encryption technology, the copyright management idea and the digital watermark technology are organically combined, thereby effectively improving the communication safety of image class digital services.

Description

technical field [0001] The present invention relates to image digital content protection technology, in particular to a method for sending and receiving image digital content, a method for embedding and extracting watermark information in image digital content, and related devices. Background technique [0002] With the rapid development of mobile digital technology, copyright infringement, illegal forwarding, counterfeiting and other behaviors are becoming more and more difficult to control, and the security of digital content in the mobile network environment has become increasingly prominent. For example, streaming media services, digital broadcasting and mobile phone TV services are inseparable from content protection technology, especially image-based mobile digital services with promising market prospects, such as QR code services, rely on digital content protection technology. Only with stronger and more robust content protection technology in the mobile network envir...

AI Technical Summary

Problems solved by technology

[0028]Digital watermarking technology is widely used in the protection of image digital content, but digital watermarking technology only focuses on anti-counterfeiting, and does not control the confidentiality of the transmission process and the forwarding authority. consider

Moreover, the traditional LSB watermarking algorithm directly embeds the watermark information in the low bit of the bitmap, which is not very safe.

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