Patent ID: 8879837

Claim:
A computer-implemented method of detecting one or more archive images matching a search image, each matching archive image being a derivative of the search image or being an original image the search image was derived from, the method comprising: accessing a plurality of the archive images; for each of said archive images, computing a respective archive image histogram, each archive image histogram comprising a plurality of combination micro-feature values, and storing said archive image histogram to a database; receiving a search image; computing a search image histogram from said search image, the search image histogram comprising a set of combination micro-feature values; comparing the combination micro-feature values of the search image histogram with the combination micro-feature values of the archive image histograms to identify one or more candidate archive image histograms; and respectively comparing the one or more candidate archive image histograms with the search image histogram to identify one or more matching archive images as being a derivative of the search image or as being the original image the search image was derived from.