Combining the Advantages of Alternative Screening Modes with an Image Decomposition on Continuous Tone and Line Matter Constituent Parts

The whole quantization scale of tone value is applied to an each output pixel in digital TV or continuous tone printer for image gradation variation. This scale is level-by-level spatially dispersed for the same purpose between multiples of such pixels with a screening process. That results in conflicting data providing both tonal and spatial resolution of halftones. In adaptive screening, the trade off problem is solved by input image decomposition on continuous-tone and line matter constituent parts with selective varying of the degree, periodicity, linearity, and direction of quantization scale spatial dispersion. Psycho-visual and technical premises of such image decomposition and variants to combine, on this basis, the alternative screening modes are discussed as result of modeling the process and realistic halftone printing.