Exposing Digital Forgeries Through Specular Highlights on the Eye

Abstract. When creating a digital composite of two people, it is difficult to exactly match the lighting conditions under which each individual was originally photographed. In many situations, the light source in a scene gives rise to a specular highlight on the eyes. We show how the direction to a light source can be estimated from this highlight. Inconsistencies in lighting across an image are then used to reveal traces of digital tampering. Key words: Digital Tampering, Digital Forensics

• Type: Conference
• Year: 2007
• Where: IH
• Authors: Micah K. Johnson, Hany Farid
• Keywords: Digital Tampering, IH 2007, Light Source, Scene Gives Rise