Image optimization method and device, equipment and storage medium

Abstract

The invention discloses an image optimization method and device, equipment and a storage medium, and the method comprises the steps: calculating an image texture value of each pixel point in an imageaccording to a preset distortion cost function when the image is received, and calculating a local fluctuation value through the pixel value of each pixel point; adjusting the preset distortion cost function according to each image texture value and each local fluctuation value to obtain a target distortion cost function; and performing steganography on the image based on the target distortion cost function, so as to complete the optimization of the image. According to the invention, steganography is carried out on the image through the target distortion cost function after adjustment of the image texture value and the local fluctuation value; a the fluctuation degree of the pixels of the steganography image is similar to the fluctuation degree of the surrounding pixels, so that the probability that the steganography of the steganography image is detected by a steganography analysis tool is reduced, the steganography image has better anti-detection performance, and the steganography safety of the image is improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image optimization method, device, equipment and storage medium. Background technique [0002] With the rapid development of the economy, people are increasingly in a modern information society, and people can easily use various terminals to obtain the information and data they need through the network. However, the problem of information security has also become more and more serious. The private information that people do not want to be known to outsiders is also easy to be obtained by some people with ulterior motives, and even exposed to the public. In this context, steganography is widely used again. Steganography is a technique to embed secret information into media data by slightly modifying the carrier data. When people transmit some secret information, they can secretly embed the information that people need to transmit to others into the image, maki...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide an image optimization method, device, equipment, and storage medium, aiming to solve the problem of poor detection resistance of dense images after image steganography using distortion cost functions in the prior art, and image concealment Write for less secure technical issues

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