Image Hashing and Comparison Project

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Research Areas: Prevention, Detection and Response

Principal Investigator: James Goldman

The goals of the Image Hashing and Comparison Project are to develop methods for creating "fuzzy" hashes of digital images.  Unlike a cryptographic digital hash which is sensitive to any change in the source content, a fuzzy hash will be tolerant of manipulations to a digital image.  This allows derivative images, which have been resized, cropped, or rotated, to be linked to the original source image.  A provisional patent application has been issued on the project's accomplishments so far, and research continues on new image hashing techniques. A working prototype leading to possible product commercialization has been developed and is available for demonstration

Keywords: cryptography, digital images, hash