Clinics and hospitals have already adopted more technological resources to provide a faster and more precise diagnostic for patients, health care providers, and institutes of medicine. Security issues get more and more important in medical services via communication resources such as Wireless-Fidelity (Wi-Fi), third generation of mobile telecommunications technology (3G), and other mobile devices to connect medical systems from anywhere. Furthermore, cloud-based medical systems allow users to access archived medical images from anywhere. In order to protect medical images, lossless data hiding methods are efficient and easy techniques. In this paper, we present a data hiding of two-tier medical images based on histogram shifting of prediction errors. The median histogram shifting technique and prediction error schemes as the two-tier hiding have high capacity and PSNR in 16-bit medical images.

中文翻译：

---

基于预测误差直方图平移的二层医学图像可逆数据隐藏

诊所和医院已经采用了更多的技术资源，为患者、医疗保健提供者和医学机构提供更快、更精确的诊断。通过无线保真 (Wi-Fi)、第三代移动电信技术 (3G) 和其他移动设备等通信资源从任何地方连接医疗系统，安全问题在医疗服务中变得越来越重要。此外，基于云的医疗系统允许用户从任何地方访问存档的医疗图像。为了保护医学图像，无损数据隐藏方法是有效且简单的技术。在本文中，我们提出了一种基于预测误差直方图偏移的两层医学图像数据隐藏。