Steganography Android App: Beta Version
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Hide 324 bits with 800x800 image, using 40x40 blocks, storage can be increased by segmentation.
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Use hsv color model, easy to encode/decode, hardly be affected by hardware conditions, swap V value of centre/rest areas for embedding. Change offset value to balance invisibility & performance.
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Square edge detection and bitmap resizing by offset value which should be greater than background color in hsv. Best performance with white background (A4 paper etc.)
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Work on the laptop screen as well, just need to modify the background color of photoviewer to white.