Digital halftoning deals with transforming a gray or color image into its binary version which is useful in printing applications. Dot diffusion is one of
the prominent halftone methods which can yield superior image quality with parallel processing capabilities. In this paper, a rapid watermarking algorithm
is proposed for dot-diffusion halftone images using adaptive class-matrix selection and modified error diffusion kernels. To process the image using
an adaptive class matrix, the processing order of the class matrix is reversed and transposed, and for error diffusion the coefficients are replaced with different
weights. For decoding, an effective strategy is proposed based on a correlation analysis and halftone statistics.Etc...
Keywords
Digital Halftones, Dot Diffusion, Error Diffusion, Watermarking.
ECTI TRANSACTIONS ON COMPUTER INFORMATION TECHNOLOGY