Figure 10From: An Efficient Watermarking Technique for the Protection of Fingerprint ImagesTest images from DB2 (a: Image 71_4, b: Image 75_7): (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