Camera-Based Image Forgery Detection

Recently, an increased number of studies in image authentication and image forgery detection have appeared that are based on indicators arising from the acquisition process of the data, namely due to the inherent characteristics of the camera used to produce the image. This chapter focuses on different aspects of image forgery based on effects and cues found in the image that are due to the acquisition process. These aspects include: image authentication, image forgery detection and image signature. These studies are termed as camera-based image forgery detection methods. The chapter describes the camera structure and the three major components: optics, sensors and imaging pipeline. For each component, its basic mechanism, its role in the acquisition process and its effects on the final acquired image are detailed. The chapter presents a specific camera-based image forgery technique as a case study for the approaches.