In this paper, we address the problem of the use of a human visual system (HVS) model to improve watermark invisibility. We propose a new color watermarking algorithm based on the minimization of the perception of color differences. This algorithm is based on a psychovisual model of the dynamics of cone photoreceptors. We used this model to determine the discrimination power of the human for a particular color and thus the best strategy to modify color pixels. Results were obtained on a color version of the lattice quantization index modulation (LQIM) method and showed improvements on psychovisual invisibility and robustness against several image distortions.

中文翻译：

---

基于心理视觉模型的新型盲色水印

在本文中，我们解决了使用人类视觉系统（HVS）模型改善水印不可见性的问题。我们提出了一种基于最小化色差感知的新颜色水印算法。该算法基于锥体感光细胞动力学的心理视觉模型。我们使用此模型来确定人类对特定颜色的辨别力，从而确定修改彩色像素的最佳策略。结果是在彩色版本的晶格量化指数调制（LQIM）方法上获得的，并显示出心理视觉上的不可见性和对几种图像失真的鲁棒性的改进。