Digital image forgery detection using Image hashing

Image hashing is one of the techniques used to generate hash value for each image in the database. These hash values generated for images can be used for content based image retrieval, image database indexing, and image authentication, avoiding and mitigating the tampering of digital images. In the information era, the increasing availability of multimedia data in digital form has led to a tremendous growth of tools to manipulate digital multimedia. To ensure trustworthiness, multimedia authentication techniques have emerged to verify content integrity and prevent forgery. In this paper, a novel approach is proposed for Forgery detection using Image hashing, Experimental results show that even slightest of image tempering can be detection with the proposed technique.