Blind Watermarking Algorithm for Color Images Based on Nearest Neighbor Interpolation
Xin Guo Zou · Applied Mechanics and Materials · 2013
In this paper, we present a blind digital watermarking method for color image based on nearest neighbor interpolation. The algorithm has the following characteristics: (1) it generate adaptive watermark based on the size of carrier image,so as to improve the robustness of binary watermark; (2) the watermark is embedded in the DCT coefficient of intermediate frequency, which can effectively resist common attacks, such as Gaussian noise-adding, salt and pepper noise-adding, cropping, Wiener filtering, JPEG compression;(3) the watermarking detection is simple and fast, and does not require carrier image. The experiments show that the algorithm has good invisibility and strong robustness.