Recursive multiscale error-diffusion technique for digital halftoning

Ioannis Katsavounidis; C.-C. Jay Kuo

doi:10.1117/12.157968

22 October 1993 Recursive multiscale error-diffusion technique for digital halftoning

Proceedings Volume 2094, Visual Communications and Image Processing '93; (1993) https://doi.org/10.1117/12.157968
Event: Visual Communications and Image Processing '93, 1993, Cambridge, MA, United States

Abstract

The technique of mapping a given gray level to some arrangement of dots such that it renders the desired gray level is called halftoning. In this research, we propose a new digital halftoning algorithm to achieve this goal based on an approach called the recursive multiscale error diffusion. Our main assumption is that the resulting intensity from a raster of dots is in proportion to the number of dots on that raster. In analogy, the intensity of the corresponding region of the input image is simply the integral of the (normalized) gray level over the region. The two intensities should be matched as much as possible. It is shown that the area of integration plays an important role to how successful the matching of the two intensities can be, and since the area of integration corresponds to different resolutions (therefore to different viewing distances), we address the problem of matching the intensities, as much as possible for every resolution. Advantages of our method include very good performance, versatility and ease of hardware implementation.

Citation Download Citation

Ioannis Katsavounidis and C.-C. Jay Kuo "Recursive multiscale error-diffusion technique for digital halftoning", Proc. SPIE 2094, Visual Communications and Image Processing '93, (22 October 1993); https://doi.org/10.1117/12.157968

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