Method and apparatus for logo hiding in images
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United States of America Patent
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Mar 13, 2001
Grant Date -
N/A
app pub date -
Feb 9, 1996
filing date -
Feb 9, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of hiding a figure in an image replaces information from a figure-shaped portion of the image with information from another location having similar texture. The relative insensitivity of the eye to discontinuities in texture patterns having a significant high-frequency or random component minimizes the perceptibility of the replacement. The figure is revealed by autocorrelating the image containing the repeated information, and subtracting the image from a copy of itself shifted according to the arguments creating large value of the autocorrelation function.
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Cited Art Landscape
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