Analysis Of Photo Response Non �Uniformity Noise On Images Of Different Lighting Conditions

Abstract

Abstract-Photo Response Non-Uniformity (PRNU) Noise introduced by the sensors in the digital capturing device is widely used in the field of Image Forensics. This sensor pattern noise proved to give reliable evidences in Source Camera Identification and Image Forgery Detection. But the accuracy of identification rates of PRNU based techniques depends on the lighting conditions in which the particular camera device captures digital images for calculating their reference PRNU and also the lighting condition of the image under investigation. This paper tests the PRNU content of images of same scene under different lighting conditions in terms of correlation values of the extracted PRNU"s from the images and the reference PRNU of the images under different illuminations.