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tldr/pages/common/pgmkernel.md

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# pgmkernel
> Generate a convolution kernel to be used with `pnmconvol`.
> See also: `pnmconvol`.
> More information: <https://netpbm.sourceforge.net/doc/pgmkernel.html>.
- Generate a convolution kernel:
`pgmkernel {{width}} {{height}} > {{path/to/output.pgm}}`
- Generate a quadratic convolution kernel:
`pgmkernel {{size}} > {{path/to/output.pgm}}`
- Specify the weight of the center in the generated kernel:
`pgmkernel -weight {{value}} {{width}} {{height}} > {{path/to/output.pgm}}`