Figure 9From: An Efficient Watermarking Technique for the Protection of Fingerprint ImagesTest images from DB1 (a: Image 98_2, b: Image 20_1): (a:1, b:1) difference image between original image and watermarked image, (a:2, b:2) difference image without the ridges area. Watermark applied in the DCT domain with using the conventional technique.Back to article page