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BPCS Steganography Implementation. Overview. Bit-Plane Complexity Segmentation Split region into bit-planes Hide in “complex” regions Undetectable to human eye. Bitmap Image Format. File Header, Info Header, Pixel Array Pixels stored as 3 bytes, R-G-B 3 bytes per pixel.

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Presentation Transcript
overview
Overview
  • Bit-Plane Complexity Segmentation
    • Split region into bit-planes
    • Hide in “complex” regions
    • Undetectable to human eye
bitmap image format
Bitmap Image Format
  • File Header, Info Header, Pixel Array
  • Pixels stored as 3 bytes, R-G-B
  • 3 bytes per pixel
bit planes and complexity
Bit-Planes and Complexity
  • Break up image into 8x8 pixel regions
  • Select a byte (R-G-B) to hide in
  • Decompose into bit planes, giving 8 bitplanes
  • Measure complexity of each plane, if past threshold, replace with secret data
our implementation
Our Implementation
  • Original style border length
  • Store 7 bytes of secret image per complex bit plane
slide7
Original zoomed in
  • Stego-image zoomed in
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