Device and method for correlative encryption transmission of underwater optical images

Abstract

The invention provides a correlated encryption transmission device and method of an underwater optical image. The device comprises an optical image reconstruction platform and an underwater optical detection platform, wherein the optical image reconstruction platform comprises a submarine sound signal receiving module and a correlated computation module; the underwater optical detection platform comprises a center control module, a structured light illumination module, an optical echo detection module and an acoustic transduction emission module. The method comprises the following steps: S1, emitting the detection light to irradiate an underwater target object to perform correlated imaging processing; receiving a light echo signal, modulating and then sending to an acoustic channel to be transmitted; S2, receiving an acoustic channel signal, demodulating and performing correlated computation processing to obtain an underwater target object image. The device provided by the invention not only can maintain the high resolution of the optical imaging, but also can increase the underwater transmission distance of the optical image, the communication rate is improved, and the remote transmission of the optical image is realized.

Description

technical field [0001] The invention relates to the field of underwater image transmission and processing, and more particularly, to an associated encrypted transmission device and method of underwater optical images. Background technique [0002] At present, imaging technology is the most widely used field of optics. 80% of the information in the human brain is obtained through the eyes, and visible image information is crucial to human daily life. Optical imaging can perform high-resolution, high-sensitivity and fast imaging of objects, so it has a wide range of applications. It mainly uses photodetectors to directly detect target objects. [0003] Image encryption is often required in secure communication. The traditional image chaotic encryption method is very sensitive to initial conditions due to the chaotic sequence, and slight differences in initial conditions will lead to completely different chaotic sequences, so that the original image cannot be restored, and the ...

AI Technical Summary

Problems solved by technology

[0004] Imaging with optical signals has many advantages, but there are many limitations when applying this technology underwater

When optical detection is applied in underwater environment, it can still achieve high resolution, high sensitivity and fast imaging. However, due to absorption and scattering of optical signals underwater, its transmission distance is very short, which greatly limits the application of optical detection in underwater environment. application

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