Reversible information hiding method for carrying out multi-histogram point selection based on crisscross algorithm

Abstract

The embodiment of the invention discloses a reversible information hiding method, device and equipment for carrying out multi-histogram point selection based on a crisscross algorithm and a computer readable storage medium. The method comprises the steps of acquiring local features of each image block of a carrier image, wherein the local features of each image block comprise the sum of longitudinal pixel differences and the sum of transverse pixel differences; setting a category label for each image block; calculating a prediction error of a central pixel point of each image block, and generating a prediction error histogram for each category; determining an embedded point combination from the plurality of prediction error histograms by using a crisscross algorithm; and based on the embedding point combination, carrying out watermark embedding on the carrier image by using a histogram translation method to generate a secret-carrying image. On the premise of guaranteeing the high fidelity of the secret-loaded image, the optimal embedding point combination is quickly found, the calculation complexity is greatly reduced, the time cost of watermark embedding is reduced, and the practicability is high.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of multimedia signal processing, and in particular to a reversible information hiding method, device, equipment and computer-readable storage medium for selecting multiple histogram points based on a crossover algorithm. Background technique [0002] With the advent of the digital age, multimedia information can already be disseminated at high speed on the Internet, and can be copied and modified at will. Therefore, multimedia information security has become a hot spot in recent years. As one of the main carriers of multimedia information transmission, image security can be realized by information hiding technology. [0003] The traditional information hiding technology will cause permanent distortion to the image, but the reversible information hiding technology can ensure that the carrier image can be completely restored after the watermark information is extracted without loss. Thi...

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Problems solved by technology

[0004] Although the image watermark embedding using the reversible information hiding method can ensure the high-fidelity effect of the secret-carrying image, when the related technology adopts the reversible information hiding method to embed the image watermark, it takes a long time to find the best embedding point, and the time cost of watermark embedding is relatively high. Big

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