man pnmtov (1): convert portable anymap (PNM) image to Vista data file

SYNOPSIS

pnmtov [-option ...] [infile] [outfile]

pnmtov converts an image from a portable anymap (PNM) file to a Vista data file. The following types of portable anymap may be converted:

Portable bitmap (PBM) and its ``rawbits'' variant. A PBM image is converted to a single-band Vista image with bit pixels. Pixel values 0 and 1 are swapped since, for PBM images, 0 denotes white and 1 denotes black.
Portable graymap (PGM) and its ``rawbits'' variant. A PGM image is converted to a single-band Vista image with ubyte pixels. The full range of PGM pixel values is mapped to [0,255] in the returned image.
Portable pixmap (PPM) and its ``rawbits'' variant. A PPM image is converted to an RGB color image (nbands: 3, ncolors: 3, color_interp: rgb) with ubyte pixels. The full range of PPM pixel values is mapped to [0,255] in the returned image.

A wide range of filters are available for converting other image formats to PNM.

pnmtov accepts the following options:

-help: Prints a message describing options.
-in infile: Specifies the input file, which is a PBM, PGM, or PPM file.
-out outfile: Specifies the output file, which will be a Vista data file.
-name name: Specifies the name to be given the converted image. Default: ``image''.

Input and output files can be specified on the command line or allowed to default to the standard input and output streams.