Digital halftoning
Digital image processing (2nd ed.)
Digital image processing (2nd ed.)
IBM Systems Journal
An Information Hiding Technique for Binary Images in Consideration of Printing Process
PCM '02 Proceedings of the Third IEEE Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
Data hiding watermarking for halftone images
IEEE Transactions on Image Processing
Watermark recovery from a dual layer hologram with a digital camera
SCIA'11 Proceedings of the 17th Scandinavian conference on Image analysis
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The objective of this research is to design a novel data hiding method for the dot-matrix hologram. The modified error diffusion techniques for addressing the halftone dots in six colors are proposed to make efficient use of the image area and to hide information. After outputting the encoded hologram, which is in analog format, an independent data recovery system is applied to capture the encoded holographic image and to extract the hidden information. The results show that it is feasible to hide data in a dot-matrix hologram. The method proposed in this research can achieve multiple security features for hologram in anti-counterfeiting applications.