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Halftone (Raster Page) [DEFAULT SETTING: Dithering]
This option control the way a raster-engraved image is processed. The “digital image to engraved
output” process can be processed via two methods: Dithering or Error Diffusion. Each offer
additional output options yielding different output effects, style, and quality.
• Dithering: Interprets and outputs the raster engraving via the dithering method. This mode will
allow you to select the Pattern Type and Dithering Matrix, and Enhanced Dithering.
- Pattern Type: Dot, Bayer, Corner, 45 Degree [DEFAULT SETTING: Dot]
Each pattern type uses a different shape and arrangement of dots to compose the
shading effect of a raster image.
The following diagram is an example of the raster effects when using the different
pattern types.
- Dithering Matrix: Variable depending on the Pattern Type selected. [DEFAULT
SETTING: 8x8]
This control the resolution (dot size) and the number of dots the image is broken down
into for the dithering process. As an example, selecting 2 x 2 will shade with a 5-grade
halftone, where as an 8 x 8 Dithering Matrix will dither with a 65-grade halftone.
The following diagram is an example of the raster effects when using the different
dithering matrices.
- Enhance Dithering [DEFAULT SETTING: Unselected]
Selecting this will produce a finer dithering output.
- Error Diffusion (Raster Page): Interprets and outputs the raster engraving via the error
diffusion method. This mode will allow you to select from three diffusion types: Floyd,
Stucki, and Jarvis.
- Diffusion Type: Floyd, Stucki, Jarvis [DEFAULT SETTING: Floyd]
Each diffusion type presents the shade of image as different spread halftones instead
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