Analysis Of Photo Response Non –Uniformity Noise On Images Of Different Lighting Conditions
Keywords:
Photo Response Non-Uniformity (PRNU); Image Forensics; sensor pattern noise; Source Camera Identification; Image Forgery Detection; lighting conditions; illumination.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.
