pnmalias

Apply antialiasing onto a PNM image. More information: https://netpbm.sourceforge.net/doc/pnmalias.html.

• Perform antialiasing on a PNM image, taking black pixels as background and white pixels as foreground:

pnmalias {{path/to/input.pnm}} > {{path/to/output.ppm}}

• Explicitly specify the background and foreground color:

pnmalias -bcolor {{background_color}} -fcolor {{foreground_color}} {{path/to/input.pnm}} > {{path/to/output.ppm}}

• Apply altialiasing to foreground pixels only:

pnmalias {{[-fo|-fonly]}} {{path/to/input.pnm}} > {{path/to/output.ppm}}

• Apply antialiasing to all surrounding pixels of background pixels:

pnmalias {{[-ba|-balias]}} {{path/to/input.pnm}} > {{path/to/output.ppm}}