AN ROI-BASED MEDICAL IMAGE HIDING METHOD

作者：Pai Pei Yan^*; Chang Chin Chen; Chan Yung Kuan; Liu Chia Ming

来源：International Journal of Innovative Computing Information and Control, 2012, 8(7A): 4521-4533.

• Irreversible image hiding
• Reversible image hiding
• ROI
• Medical image
• Image segmentation

Transmitting medical images among health care professionals, providers, and organizations via the Internet has become popular. However, illegal attackers or hackers can easily grab, duplicate, or revise the medical images on the Internet. Generally, a medical image should be kept intact for accurately diagnosing the patient%26apos;s condition. A reversible image hiding method can restore the original medical image losslessly only from the stego-image. The reversible image hiding method can be used to conceal secret data in a medical image; however, it can only carry a few secret data. On the contrary, an irreversible image hiding method can generally hold much more secret data. In a medical image, %26quot;region of interest%26quot; (ROI) is a region which contains important information and must be stored without any distortion. This paper hence proposes an ROI-based image hiding method which embeds secret data in non-ROI by an irreversible image hiding method and in ROIs by a reversible image hiding method. The experimental results indicate that the proposed method can not only provide a good performance in data embedding capacity and stego-image quality but can also restore the ROIs without any distortion.

• 出版日期2012-7
• 单位清华大学