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In this paper, the well known least-mean-square (LMS) method is applied for designing an adaptive filter used to produce a high quality halftone image. The experimental results show that the proposed LMS-designed halftoning achieves the extra benefit of edge enhancement and eliminates the annoying worm effect in error-diffused image. In addition, we provide two data hiding applications, named direct...
In this paper, we propose a novel technique for embedding flexible amounts of data into a dithering halftone image and still achieving a high quality result. In the encoder, we reserve the high frequency regions with nearly the same number of black and white pixels by calculating the pixel connection. The secret data is embedded into these regions. In the decoder, a blind decoding technique is applied...
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