Giải thuật tích hợp thủy vân bảo vệ bản quyền dữ liệu bản đồ vector lĩnh vực môi trường

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Tác giả: Hải Hà Lê, Hoàng Anh Lê, Đình Hân Nguyễn, Văn Thùy Nguyễn

Ngôn ngữ: Vie

Ký hiệu phân loại: 363.7 Environmental problems

Thông tin xuất bản: Môi trường 2022

Mô tả vật lý: 122-128

Bộ sưu tập: Metadata

ID: 406931

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Tóm tắt
Chủ đề

Dữ liệu bản đồ vector là một trong những loại thông tin, dữ liệu chính của ngành TN&MT. Đây cũng là một trong những loại dữ liệu mà chi phí để tạo ra nó tương đối lớn bởi những khó khăn trong việc đo đạc, thu thập và biên tập thông tin. Sự phát triển nhanh chóng của Internet đã tạo ra nhiều ưu điểm trong việc phân phối, khai thác và sử dụng các dữ liệu bản đồ vector, tuy nhiên nó cũng làm phát sinh nhiều vấn đề như nhân bản, phát tán, giả mạo, và sử dụng dữ liệu bất hợp pháp. Các hành vi trộm cắp trên Internet ngày càng trở nên tinh vi và số lượng các vụ vi phạm ngày càng nhiều cho thấy nhu cầu cấp thiết cần nghiên cứu và phát triển một giải pháp hiệu quả để bảo vệ bản quyền dữ liệu bản đồ vector và ngăn chặn chúng bị thu thập, sử dụng bất hợp pháp. Trong số các nghiên cứu và giải pháp chính, thủy vân số nổi lên như là một phương pháp hiệu quả và đang là một lĩnh vực nghiên cứu tích cực để bảo vệ bản quyền các dữ liệu bản đồ vector. Các biến đổi, tấn công dữ liệu vô tình hay cố ý rất đa dạng nhưng các giải pháp thủy vân hiện tại mới chỉ bảo vệ được dữ liệu bản đồ vector trước một số tấn công hay biến đổi nhất định. Hướng tới một giải pháp tốt cho việc bảo vệ bản quyền dữ liệu bản đồ vector lĩnh vực môi trường, bài báo trình bày một giải thuật tích hợp hai loại thủy vân gồm thủy vân nhúng vào tọa độ các đỉnh và thủy vân rỗng dựa trên đặc tính thống kê để tạo nên một giải thuật bảo vệ bản quyền dữ liệu bản đồ vector bền vững trước nhiều tấn công hay biến đổi dữ liệu như thêm, sửa xóa các đỉnh (vertex), thêm, sửa xóa các đối tượng (feature), cắt xén (crop), nén (simplify), chuyển hệ tọa độ (transform), dịch chuyển (translate), tỷ lệ (scale) hay xoay (rotate). Giải thuật cho phép làm việc trên tất cả các dạng dữ liệu bản đồ vector, gồm dạng điểm, dạng đường và dạng vùng., Tóm tắt tiếng anh, Vector geographic data is one of the main types of information, data of the natural resources and environment sector. This is also one of the types of data where the cost to create it is relatively large because of the difficulty in surveying, collecting and authorizing. The rapid development of the Internet has created many advantages in the distribution, exploitation and use of vector geographic data, but it also gives rise to many problems such as duplication, redistribution, forgery, and illegal data use. The theft on the Internet is becoming more and more sophisticated and the number of violations is increasing, showing the urgent need to research and develop an effective solution to protect the copyright of vector geographic data and prevent them from being illegally collected and used. Among the major researches and solutions, digital watermarking emerges as an effective method and is an active research area for copyright protection of vector geographic data. Attacks/ modifications, intended or not, are very diverse, but current watermarking solutions can only protect vector geographic data against certain attacks. Towards a good solution for copyright protection of environmental vector geographic data, this paper presents an algorithm that integrates two types of watermarks, including embedded watermarks in the coordinates of vertices and zero watermarks based on statistical characteristics to create a robus vector geographic data copyright protection algorithm against many attacks such as adding, modifying and deleting vertices, adding, editing and deleting features, crop, compress (simplify), transform, translate, or rotate vector geographic data. The algorithm allows working on all types of vector geographic data, including points, lines, and polygons.

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