mirror of https://github.com/CrimsonTome/tldr.git
21 lines
807 B
Markdown
21 lines
807 B
Markdown
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# pnmconvol
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> Convolute a PNM image.
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> More information: <https://netpbm.sourceforge.net/doc/pnmconvol.html>.
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- Convolve a PNM image with the specified convolution matrix:
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`pnmconvol -matrix=-1,3,-1 {{path/to/image.pnm}} > {{path/to/output.pnm}}`
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- Convolve a PNM image with the convolution matrix in the specified files, one for each layer in the input image:
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`pnmconvol -matrixfile {{path/to/matrix1,path/to/matrix2,...}} {{path/to/image.pnm}} > {{path/to/output.pnm}}`
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- Convolve a PNM image with the convolution matrix in the specified PNM file:
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`pnmconvol {{path/to/matrix.pnm}} {{path/to/image.pnm}} > {{path/to/output.pnm}}`
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- Normalize the weights in the convolution matrix such that they add up to one:
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`pnmconvol -matrix=-1,3,-1 -normalize {{path/to/image.pnm}} > {{path/to/output.pnm}}`
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