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Zero-Watermarking for Vector Maps Combining Spatial and Frequency Domain Based on Constrained Delaunay Triangulation Network and Discrete Fourier Transform.
Xu Xi
Yang Hua
Yi Chen
Qiande Zhu
Published in:
Entropy (2023)
Keyphrases
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frequency domain
discrete fourier transform
delaunay triangulation
fourier transform
spatial domain
low frequency
feature extraction
subband
denoising
filter bank
triangular mesh
feature vectors
fast fourier transform
sparse representation
signal processing
radon transform
multiscale