A New Copyright Protection for Vector Map using FFT-based Watermarking
Abstract: This study proposed
a new approach of copyright protection for vector map using robust watermarking
on FFT algorithm. A copyright marker inserted in vector map as the watermark.
In addition to data origin authentication capabilities watermark, RSA
cryptographic algorithm is used when generating the watermark. Quality
measurement of the results was based on the three characteristics of digital
watermarking: (1) invisibility using RMSE calculations, (2) fidelity with the
farthest distance and (3) NC calculation and gemotrical level of robustness
against attacks. Result of experiments showed that the approach used in this
study succeeded in inserting copyright as watermark on vector maps.
Invisibility test showed good results, demonstrated by RMSE close to zero.
Fidelity of the watermarked map was also maintained. Level of watermark
robustness against geometric attacks on vector map results has been maintained
within the limits that these attacks do not affect the watermark bit value
directly.
Author: Shelvie Nidya Neyman,
I Nyoman Prama Pradnyana, Benhard Sitohang
Journal Code: jptkomputergg140049
