A novel tamper detection and image recovery technique for color image demosaicking

Abstract

In this paper, we designed an image integrity protection technique for color image demosaicking. In the proposed technique, the authentication codes are generated based on the random values induced by the random number seed. The recovery codes are generated by compressing the demosaicked image using the block truncation coding technique. The authentication codes and the recovery codes are then embedded into the host image to provide the image integrity protection. The experimental results show that the tampered areas of a modified image can be clearly detected. In addition, the tampered areas in the modified image can be roughly recovered if needed.