Copyright-protection-service-oriented remote sensing image digital watermarking method

Abstract

The invention discloses a mapping-mechanism-based remote sensing image digital watermark embedding and detection algorithm, and belongs to the technical field of geographic information copyright protection. Based on analysis of geometric attacks of a remote sensing image, after the image is cut, the image element value of the image is not changed, and only the coordinate position is moved; and by expanding mapping parameters, a many-to-one mapping relationship between the remote sensing image data and the watermark information is established, and the embedded position of a watermark is determined. By the method, the problem of asynchronism of watermark information is solved by fully using the properties of the image element value of the remote sensing image before and after the geometric attacks, so that the robustness of the algorithm is greatly improved, and the problem that the conventional remote sensing image algorithm cannot resist the geometric attacks such as cutting, rotation and the like is solved.

Description

Technical field [0001] The invention belongs to the field of geographic information copyright protection, and specifically relates to a digital watermark embedding and detection method adopting a mapping mechanism for remote sensing image data, so as to improve the ability of the remote sensing image digital watermark algorithm to resist geometric attacks. Background technique [0002] Remote sensing imagery is an important basic surveying and mapping result, and one of the data sources for national and provincial basic surveying and mapping guarantee services. It has gradually become the main data source for geospatial information acquisition. With the deepening of the construction of national spatial data infrastructure and the maturity and wide application of geographic information system (GIS) technology, remote sensing images have been used in major national project construction, military reconnaissance, dynamic monitoring of important targets, disaster emergency response and...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to propose a remote sensing image data based on mapping mechanism in view of the problems that current remote sensing image watermarking technology cannot solve watermark information location, is difficult to resist geometric attacks such as cropping at any position and changing image size rotation, and has poor robustness. The digital watermarking method makes the watermarking algorithm have good robustness against attacks such as cropping, rotation, translation, scaling, distortion, noise, filtering, etc.

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