Orientation Modulation for Data Hiding in Chrominance Channels of Direct Binary Search Halftone Prints

Abstract

Abstract. In this article, we propose a joint halftoning and data hiding technique for color images. To ensure high quality of the printed image, the color direct binary search (CDBS) iterative halftoning algorithm is used. The proposed approach uses the commonly available cyan, magenta and yellow colorants to hide data in the chrominance channels. Orientation modulation is used for data embedding during the iterative CDBS halftoning stage. The detector is using PCA-learned components to extract the embedded data from the scanned image. Experimental results show that this proposed CDBS-based data hiding method offers both higher data hiding capacity and higher robustness to the print-and-scan channel when compared to the state-of-the-art grayscale counterpart method. The relatively high correct detection rate make this approach suitable for applications which require exact extraction of embedded data in prints.

Effect of Elevation and Surface Roughness on Naturalness Perception of 2.5D Decor Prints

“…An intensity adjustment was done to reach the intended maximum elevation. The roughness was added by direct binary search halftone blue noise with a zero mean generated by software [22] (input image was a flat grayscale at 128 with zero-mean uniform noise added, and the output image was a halftone noise image). According to Kitanovski and Pedersen [22], the direct binary search algorithm provides high-quality prints.…”

“…The roughness was added by direct binary search halftone blue noise with a zero mean generated by software [22] (input image was a flat grayscale at 128 with zero-mean uniform noise added, and the output image was a halftone noise image). According to Kitanovski and Pedersen [22], the direct binary search algorithm provides high-quality prints. The halftone noise image was further resized with nearest-neighbor interpolation with a resize factor of two and then cropped to the intended size.…”