2D Vector Map Fragile Watermarking with Region Location

2018 ◽  
Vol 4 (4) ◽  
pp. 1-25 ◽  
Author(s):  
Nana Wang ◽  
Mohan Kankanhalli
Keyword(s):  
Fragile Watermarking ◽  
Vector Map ◽  
2D Vector Map

Block-based Reversible Fragile Watermarking for 2D Vector Map Authentication

2015 ◽  
Vol 7 (3) ◽  
pp. 60-80 ◽  
Author(s):  
Nana Wang ◽  
Xiangjun Zhao ◽  
Han Zhang
Keyword(s):  
Computational Complexity ◽  
Reversible Watermarking ◽  
Fragile Watermarking ◽  
Experimental Results ◽  
Malicious Attacks ◽  
Tamper Localization ◽  
Vector Map ◽  
Concentric Circles ◽  
Block Based ◽  
2D Vector Map

In this paper, the authors propose a block-based reversible watermarking method for 2D vector map authentication. In the scheme, they divide the features of a vector map into different categories of blocks, calculate an authentication watermark for each block, and embed the watermarks of different blocks using a reversible watermarking method based on virtual coordinates and a fragile watermarking algorithm based on concentric circles. While the block division ensures superior accuracy of tamper localization, the two watermarking methods provide recovery of the original content. Experimental results show that the proposed scheme has good invisibility, reversibility and computational complexity, and can accurately locate malicious attacks such as vertex modification/addition/deletion and feature modification/addition/deletion.

A recursive embedding algorithm towards lossless 2D vector map watermarking

2013 ◽  
Vol 23 (3) ◽  
pp. 912-918 ◽  
Author(s):  
Liujuan Cao ◽  
Chaoguang Men ◽  
Yue Gao
Keyword(s):  
Vector Map ◽  
2D Vector Map
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