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Image data hiding is the hiding of invisible patterns in an image without degrading its visual quality. The hidden pattern can be visualized by overlaying the original image with watermarked ones or by applying an extraction algorithm. If the hidden pattern is visualized using the overlaying method, it can also be visualized using a simple XNOR operation.(More)
Halftoning is the process of representing a gray-level image with a binary image. Image data hiding is the hiding of invisible patterns in an image without degrading its visual quality. The error diffusion with nonlinear thresholding (EDNT) method embeds binary patterns or textures in a black and white halftone image. In this paper we propose a method(More)
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