Fig. 4
From: A novel secured Euclidean space points algorithm for blind spatial image watermarking
Images: up to down. From left to right: first row: cameraman.tif, Lena.tif, Mandril_gray.tif, Pepper.tif, Pirate.tif, second row: Walkbridge.tif, Woman_blonde.tif, Woman_blackhair.tif, White_Page.tif, Black_Page.tif, third row: Lena_Color.tif, Mandril_Color.tif, and Pepper_Color.tif (grayscale and color host images of size 512 × 512), Logo1.jpg and Logo2.jpg (Grayscale images of size 64 × 64)