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[imagemagick] / README.txt

diff --git a/README.txt b/README.txt
index dbf5794e92634910f9d104555a135c22970f5054..117ebfc7d6fd802ba4de163e9c8ade3dd751c4ea 100644 (file)
--- a/README.txt
+++ b/README.txt
@@ -53,8 +53,9 @@ Features and Capabilities
       * Image calculator: apply a mathematical expression to an image or image
         channels.
       * Discrete Fourier transform: implements the forward and inverse DFT.
-      * Percetual hash: detect similar or duplicate images by analyzing and
-        comparing their features.
+      * Perceptual hash: maps visually identical images to the same or similar
+        hash-- useful in image retrieval, authentication, indexing, or copy
+        detection as well as digital watermarking.
       * Color management: accurate color management with color profiles or in
         lieu of-- built-in gamma compression or expansion as demanded by the
         colorspace.