A Blind Color Image Watermarking for Grayscale Watermark Based on Tensor Decomposition

Image watermarking is an important tool for copyright management, and various watermarking methods have been proposed. Tensor decomposition, which has attracted much attention in image processing, has been applied as a watermarking method, however, no method has been proposed for color cover images with grayscale watermarks. Therefore, we propose a color image watermarking method that involves using a grayscale watermark. We evaluated the attack resistance of the proposed method through experiments.