Data transmission method based on display picture as carrier

Abstract

The invention provides a data transmission method based on a display image as a carrier, and the method comprises the specific steps: S01, carrying out the Fourier mathematical transformation of an image frame in a monitoring video, and obtaining the image frequency domain data; S02, converting to-be-transmitted data information into text or numerical data, and then performing binary encoding; S03, embedding the coded data into the frequency domain data in an information bit embedding mode; S04, restoring the S03 data to spatial domain data to form an image frame, and sending out a video; S05,receiving the S04 video data by a data receiving end, and performing Fourier transform on the image frame to obtain frequency domain data; S06, in the frequency domain data, extracting binary coded data in an embedded information bit inverse operation mode; S07, restoring the S06 data into a text or a numerical value. According to the method, a monitoring network is bypassed, the thought of network transmission is avoided, the monitoring picture is creatively used as a carrier of data transmission for the first time, and data transmission based on images can be realized.

Description

technical field [0001] The invention belongs to the field of image data processing, in particular to a data transmission method based on a display screen as a carrier. Background technique [0002] At present, in the power production environment, the security requirements are very high, and there are a large number of physical isolation devices in the network, which block the network communication of basic protocols such as TCP, so the convenience of data transmission is greatly restricted. However, in auxiliary functions such as monitoring analysis and diagnosis, it is often necessary to access real-time production data. The traditional method requires the installation of expensive physical network isolation devices and long-term multi-level approvals. Difficulties in actual operation are often More. [0003] In view of the importance of network security in the power production environment, and there are a large number of monitors in the production environment, in order to...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problem that there is no reasonable system and method for data processing of real-time video, resulting in the inability to form a closed monitoring loop, the present invention bypasses the monitoring network and avoids the idea of ​​network transmission of monitoring data, and pioneers the first use of monitoring screens As the carrier of data transmission, it can realize the data transmission method based on the image, and specifically provides a data transmission method based on the display screen as the carrier:

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