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| File Edit Options Process Analyze Video Macros Stacks SEM SPM Windows Help |
Sharpen Shadow Find Edges Rank Filters Dither Convolve PlugIn Filters
Enhance Contrast Equalize Fix Colors Differential Curvature Unsharp Mask Hough Transform |
Uses the
Floyd-Steinberg error diffusion algorithm to convert the current
selection to a binary (black and white only) image. Dithering can be
useful for exporting pictures to applications such as MacPaint or
MacDraw that can only accept binary images. Dithering can also be used
for printing on non-PostScript printers. The quality of dithered images
can frequently be improved by increasing contrast using the controls in
the Map window before doing the dithering. True color images should be
converted to grayscale by using the Convert to
Grayscale variation of the Apply LUT
command before being dithered.
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Steve Barrett November 2014 |
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