Reversible data embedding method and device

The invention discloses a reversible data embedding method and device, and the method comprises the steps: carrying out the classification of pixel blocks in an image through fuzzy clustering; selecting an extensible prediction error for the classified pixel blocks; generating a multi-channel prediction error for the classified pixel blocks; and combining the multi-channel prediction error with the extensible prediction error to perform data embedding on the image, thereby reversibly embedding more sensitive data in a given limited multimedia carrier, and solving the problems of low pixel utilization rate and low image fidelity caused by directly utilizing pixel redundancy to perform data embedding in related technologies. 本发明公开了一种可逆数据嵌入方法及装置，包括：对于图像中的像素块，使用模糊聚类进行分类；对于所分类的像素块，选择可扩展预测误差；对于所分类的像素块，生成多通道预测误差；将该多通道预测误差与该可扩展预测误差相结合，对该图像进行数据嵌入，从而在给定的限量多媒体载体中，可逆地嵌入更多的敏感数据，解决了相关技术中直接利用像素冗余进行数据嵌入导致像素利用率和图像保真度低的问题。