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Offline Handwritten Signature based Blind Biometric Watermarking and Authentication Technique using Biorthogonal Wavelet Transform

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Academic year: 2020

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Figure

Figure 2. Second level decomposition LL represents the                            sub-band, LH represents the vertical, and HH represents approximation   sub-band, HL represents the horizontal     diagonal sub-band
Figure 4 depicts the process of feature extraction from the normalized signature images using Hough Transform and Principal component analysis
Figure 6   Top – original image and signature watermark    Down- watermarked image with embedding strength 0.5,
TABLE  III   The Effect of Decomposition Level on HL2, LH2, HH2 Sub-Bands
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