Abstract
In this paper, we propose a new information embedding method which checks whether the error-diffused pixel value is within the specified range. Our experimental results using the images Lena and Baboon, and using the high-resolution standard color test image N1 (for the C, M and Y components excluding the Black component) show that information can be embedded in about half of the total pixels by keeping the MAE value of an image with no information embedded, when the error-diffusion filter coefficients proposed by Floyd and Steinberg are used, and in 60 to 70 percentage with less degradation of image quality when the filter coefficients proposed by Jarvis, et al. are used. This means that much additional information can be embedded in the binary error-diffused dither images for printing. The information embedded by this proposed method is classified as watermarks, not steganography, because the information embedded is extracted with the original multitone image.
