BusySteg
Hide information content into busy areas of images, optimally
Basic Idea
Some parts of the image (for example, tree foliage) are busier than others (for example, the sky). It is possible to hide upto even 4 bits per 8 bit pixel in such areas, with no perceptible change to the image. Additionally, such modifications are virtually impossible to detect using common steganalysis techniques.
The original idea for this is taken from a paper titled "Keyless dynamic optimal multi-bit image steganography using energetic pixels" by Goutam Paul et. al..
The implemented technique is resistant against:
- Visual attacks
- Analysis though quality metrics
- Structural attacks
- Statistical attacks
Example
Original Image
Image with text hidden
In the above image, the text hidden is
Beauty lies in the eye of the beholder
Quite a fitting caption actually.
Bitplane analysis
A bitplane analysis on the image shows no visible artefacts.
Usage
The code requires OpenCV 2.x, and CMake installed.
Compile using:
mkdir bin
cd bin
cmake ..
make
Hide data into an image using:
./busysteg h <image path> <data path> <output image path>
Extract data from the image using:
./busysteg x <image path> <output data path>