snippetbashTip
pnmnlfilt — Apply a non-linear filter onto a PNM image. More information: <https://netpbm.sourceforge.net/doc/pn
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How to use the
pnmnlfilt command: Apply a non-linear filter onto a PNM image. More information: <https://netpbm.sourceforge.net/doc/pnmnlfilt.html>.Solution
pnmnlfilt — Apply a non-linear filter onto a PNM image. More information: <https://netpbm.sourceforge.net/doc/pnmnlfilt.html>.Apply the "alpha trimmed mean" filter with the specified alpha and radius values onto the PNM image:
pnmnlfilt {{0.0..0.5}} {{radius}} {{path/to/image.pnm}} > {{path/to/output.pnm}}Apply the "optimal estimation smoothing" filter with the specified noise threshold and radius onto the PNM image:
pnmnlfilt {{1.0..2.0}} {{radius}} {{path/to/image.pnm}} > {{path/to/output.pnm}}Apply the "edge enhancement" filter with the specified alpha and radius onto the PNM image:
pnmnlfilt {{-0.9..(-0.1)}} {{radius}} {{path/to/image.pnm}} > {{path/to/output.pnm}}Code Snippets
Apply the "alpha trimmed mean" filter with the specified alpha and radius values onto the PNM image
pnmnlfilt {{0.0..0.5}} {{radius}} {{path/to/image.pnm}} > {{path/to/output.pnm}}Apply the "optimal estimation smoothing" filter with the specified noise threshold and radius onto the PNM image
pnmnlfilt {{1.0..2.0}} {{radius}} {{path/to/image.pnm}} > {{path/to/output.pnm}}Apply the "edge enhancement" filter with the specified alpha and radius onto the PNM image
pnmnlfilt {{-0.9..(-0.1)}} {{radius}} {{path/to/image.pnm}} > {{path/to/output.pnm}}Context
tldr-pages: common/pnmnlfilt
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