Information-hiding cameras: Optical concealment of object information into ordinary images.

Abstract in brief

• The developed system features a camera that hides images as ordinary patterns, using a diffractive optical processor to create deceptive visuals while transforming secret messages.
• The information-hiding method is effective under various lighting and noise conditions and is reinforced by an electronic decoder that accurately retrieves the concealed information.
• The technology also supports multispectral capabilities, enabling simultaneous hiding and decoding of multiple images across different wavelengths, and has been validated through experimental tests with terahertz radiation for enhanced visual information security.