ARGUMENTS

-i, --input

Must be followed by relative path to a .ppm input file.

-o, --output

Must be followed by the desired name of the output file. The name must end in .ppm, and the generated file will be placed in the current directory.

-x

Applies a color filter. Must be followed by either "grayscale", "sepia", or "negative"; e.g. '-i input.ppm -x sepia'.

-c, --compression

Compresses the image to the specified threshold. Requires user to specify threshold in following argument; e.g. '-i input.ppm -c 400'. The threshold represents the variance required for a block of pixels to be compressed into a single color. Basically, the higher the number, the more compressed the image will be.

-e, --edge

blacks out the image except for edges, which are colored white. Requires user to specify threshold in follow argument; e.g. '-i input.ppm -e 400'.

-t, --outline

Outlines which groups of pixels were compressed. Can only be used when compression is also used; e.g. '-i input.ppm -c 400 -t'.