Vector map watermark processing method based on gradient boosting decision tree, and terminal

Abstract

The invention provides a vector map watermark processing method and terminal based on a gradient boosting decision tree, and the method comprises the steps: S101, carrying out the preprocessing of a vector map, and obtaining a maximum disturbance region through a Delaunay triangulation network; s102, performing watermark embedding according to non-feature points in the data, identifying and correcting to-be-corrected points in the vertexes according to the position relation between the vertexes and the corresponding maximum disturbance areas and constraint conditions, and performing watermark detection; s103, performing feature engineering processing on the generated training set and test set to train a gradient boosting decision tree model, judging whether a test result of the model meets a preset condition, if so, executing S104, and if not, executing S103; and S104, predicting the radius of the maximum disturbance area according to the model, and performing watermark embedding and correction on the vector map through the predicted maximum disturbance and constraint conditions. According to the method, problems caused in the watermark embedding process can be more efficiently checked and corrected, and the data quality of the vector map is ensured while the watermark is not damaged.

Description

technical field [0001] The invention relates to the field of vector map watermark processing, in particular to a vector map watermark processing method and terminal based on a gradient lifting decision tree. Background technique [0002] Vector map is an important strategic resource for national economy, national defense construction and social development. It can not only accurately express the spatial position of elements, but also describe in detail the topological relationship, geometric shape and other important spatial characteristics of elements. From the perspective of national geographic information security, the security of vector maps is related to various aspects such as national security, scientific and technological cooperation and exchange, intellectual property protection, and data sharing. In recent years, the research on vector map watermarking technology has gradually become a hot spot in the field of vector map security research and application. When the...

AI Technical Summary

Problems solved by technology

When the specific watermark information is embedded in the vector map, although the basic characteristics of digital watermarks such as robustness, invisibility, and security can be satisfied, the vertex coordinates of the elements in the data may be disturbed, and then the topological relationship and geometric characteristics of the elements may be destroyed. important spatial features, reducing the usability of watermarked vector maps

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