pammixinterlace

Merge each row in an image with its two neighbours. See also: pamdeinterlace. More information: https://netpbm.sourceforge.net/doc/pammixinterlace.html.

• Merge each row in an image with its two neighbours:

pammixinterlace path/to/image.ppm > path/to/output.ppm

• Use the specified filtering mechanism:

pammixinterlace -filter linear|fir|ffmpeg path/to/image.ppm > path/to/output.ppm

• Turn on adaptive filtering mode, i.e., only modify pixels that are obviously part of a comb pattern:

pammixinterlace -adaptive path/to/image.ppm > path/to/output.ppm