Detection and Localization of Image and Video Tampering

Digital images and videos are widely used in various fields like courtrooms ,military ,medicine ,research, social media etc. So, maintaining the authenticity and integrity of these digital contents is a major concern. For the past few years, researches were going on to find out tampering in the digital contents. Active and passive approaches are the major classification for digital tampering detection. Here, we discuss some of the active and passive approaches and their significance in the current scenario.

Detection of digital photomontage based on image contrast analysis

Details that are invisible to the human eye in an image with low contrast can become an indicator of inconsistencies in the relative position of objects / people in the image or their illumination, which can be considered a sign of digital tampering. The article proposes a new approach for detecting photomontage in a digital image only using methods to increase the contrast of the image.

Based on Digital Image Forensics Double JPEG Compression Algorithm

Means of digital image tampering diverse, new technical approach increasingly renovation, therefore, the detection of forged digital tampering issues are complex, and must not universal, once and for all solutions. In this paper, digital image tampering common practices through research, proposed a re-deposit operations for double JPEG image processing software compression testing technology method using image compression and decompression process lossy compression of images tamper with forensic, this method can play an effective role in the detection.