Data hiding based on neighborhood attributes
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United States of America Patent
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Oct 24, 2000
Issued Date -
N/A
app pub date -
Nov 3, 1999
filing date -
Jul 31, 1992
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Abstract
Plural-bit data is encoded in an image without leaving apparent evidence of image alteration. The image is represented by data elements (e.g., pixels) whose values are changed to effect the encoding. The particular data elements to be changed are selected not on their individual values, but rather on an attribute of a neighboring group of data elements.
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