Exposing digital image forgeries by detecting inconsistencies in principal point
Jing Tao Hu, Yezhou Li, Shaozhang Niu, Xianzhe Meng · 2011
The compositing of two or more objects into a single image is a common form of manipulation. We describe how such composites can be detected by estimating a camera's intrinsic parameters from the image of target objects. Differences in these parameters across the image are used as evidence of tampering.