RIME: A Replicated Image Detector for the World-Wide Web
Edward Chang, James Ze Wang, Chen Li and Gio Wiederhold
Stanford University, Stanford, CA 94305
Abstract:
This paper describes RIME (Replicated IMage dEtector), an alternative
approach to watermarking for detecting unauthorized image copying on
the Internet. RIME profiles internet images and stores the feature
vectors of the images and their URLs in its repository. When a copy
detection request is received, RIME matches the requested image's
feature vector with the vectors stored in the repository and returns a
list of suspect URLs. RIME characterizes each image using Daubechies'
wavelets. The wavelet coefficients are stored as the feature vector.
RIME uses a multidimensional extensible hashing scheme to index these
high-dimensional feature vectors. Our preliminary result shows that
it can detect image copies effectively: It can find the top suspects
and copes well with image format conversion, resampling, and
requantization.
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Last Modified:
Fri Oct 2 00:41:27 PDT 1998
© 1998, James Z. Wang