Determining whether or not a digital image has been tampered with

A system for determining whether a digital image has been tampered;

• comprising:
• an input port configured to receive at least one stored digital image and information sufficient to to determine a reference noise pattern for a digital imaging sensor which created an authentic version of the digital image;
• at least one processor configured to regionally correlate the reference noise pattern with the digital image, to determine a regional correlation for respecitve regions having the same size and shape, and to detect regions of the digital image which have been tampered based on at least identification of at least one region having an outlier correlation as compared to a plurality of other regions of the digital image;
• and
• an output port configured to communicate a signal corresponding to the detected regions.

A tangible computer-readable storage medium containing computer readable instructions for controlling a processor to perform a method comprising:

• determining a reference noise pattern for a digital imaging sensor which created an authentic version of the digital image;
• regionally correlating the reference noise pattern with the digital image, to determine a regional correlation for respecitve regions having the same size and shape;
• detecting regions of the digital image which have been tampered based on at least identification of at least one region having an outlier correlation as compared to a plurality of other regions of the digital image;
• and
• outputting a signal corresponding to said detecting.