Halftone image resampling by interpolation and error-diffusion
Proceedings of the 2nd international conference on Ubiquitous information management and communication
Block-based threshold modulation error diffusion
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Green noise digital halftoning with multiscale error diffusion
IEEE Transactions on Image Processing
The nested list normal form for functional and multivalued dependencies
FoIKS'06 Proceedings of the 4th international conference on Foundations of Information and Knowledge Systems
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A new digital halftoning technique based on multiscale error diffusion is examined. We use an image quadtree to represent the difference image between the input gray-level image and the output halftone image. In iterative algorithm is developed that searches the brightest region of a given image via “maximum intensity guidance” for assigning dots and diffuses the quantization error noncausally at each iteration. To measure the quality of halftone images, we adopt a new criterion based on hierarchical intensity distribution. The proposed method provides very good results both visually and in terms of the hierarchical intensity quality measure