stegoPromedium
Stereogram
hackerlab
Task: Decode a hidden message from a stereogram image (Magic Eye). Solution: Detect pattern period via autocorrelation (~171 pixels), then apply pixel difference method by subtracting shifted image from original to reveal the hidden flag.
$ ls tags/ techniques/
steganographyimage_analysispythonpillowstereogrammagic_eyeautostereogrampattern_detectionautocorrelationpixel_difference
Autostereogram pattern period detection via autocorrelationPixel difference method with pattern-width shiftHidden 3D message decoding
π
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