Reversible image digital watermark overflow solution

Abstract

The invention provides a reversible image digital watermark overflow solution, belongs to the technical field of communication, and is used for solving the problem of overflow in case of embedding thedigital watermark in the image. The image with embedding of the watermark is cyclically scanned to detect the overflow pixels in the image, and the overflow pixel values are adjusted one by one and the adjustment record is generated. The idea of verification is introduced, and the adjustment record and the verification information are embedded in the image according to the designed coding mode byusing a reversible watermark algorithm so that one image having no overflow pixel can be finally obtained. With application of the method, the problem of pixel overflow of the image can be effectively solved, the problem of producing new overflow in case of embedding the adjustment information can also be solved, and the method is completely reversible and can be applied to various digital watermark technologies including the reversible digital watermark.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a reversible image digital watermark overflow solution method, which searches and adjusts overflow pixels of a grayscale image in a loop, and embeds adjustment records and verification information into the image according to a certain strategy to obtain non-overflow pixels. image, in order to solve the problem of image overflow caused by embedding digital watermark. Background technique [0002] Digital watermarking technology is an important tool for solving copyright and content authentication problems of multimedia resources. Reversible digital watermarking has become an important research direction in the field of digital watermarking and has been widely used due to its characteristics of completely lossless recovery of carrier images. After most digital watermarking technologies embed watermark information into the carrier image by modifying the pixel value, if no method...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of pixel overflow caused by embedding digital watermarks, by circularly scanning the embedded watermarked image, detecting overflow pixels in the image, adjusting overflow pixel values ​​to generate adjustment records, introducing verification information, and using the reversible watermark algorithm to convert Adjust the record and check information to embed in the image, and finally get an image without overflow pixels

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