commands.sh

pamditherbw

all

Apply dithering to a greyscale image, i.e. turn it into a pattern of black and white pixels that look the same as the original greyscale. See also: `pbmreduce`.

More info →

Options (3)

-aboolean

Use the atkinson quantization method and the specified seed for a pseudo-random number generator

Example: pamditherbw {{[-a|-atkinson]}} {{[-r|-randomseed]}} {{1337}} {{path/to/image.pgm}} > {{path/to/file.pgm}}
-rboolean

Use the atkinson quantization method and the specified seed for a pseudo-random number generator

Example: pamditherbw {{[-a|-atkinson]}} {{[-r|-randomseed]}} {{1337}} {{path/to/image.pgm}} > {{path/to/file.pgm}}
boolean

Specify the thresholding value for quantization methods that perform some sort of thresholding

Example: pamditherbw -{{fs|atkinson|thresholding}} {{[-va|-value]}} {{0.3}} {{path/to/image.pgm}} > {{path/to/file.pgm}}

Examples (4)

Read a PGM image, apply dithering and save it to a file

pamditherbw path/to/image.pgm > path/to/file.pgm

Use the specified quantization method

pamditherbw -floyd|fs|atkinson|threshold|hilbert|... path/to/image.pgm > path/to/file.pgm

Use the atkinson quantization method and the specified seed for a pseudo-random number generator

pamditherbw [-a|-atkinson] [-r|-randomseed] 1337 path/to/image.pgm > path/to/file.pgm

Specify the thresholding value for quantization methods that perform some sort of thresholding

pamditherbw -fs|atkinson|thresholding [-va|-value] 0.3 path/to/image.pgm > path/to/file.pgm
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