Pnmtoddif User Manual(0) Pnmtoddif User Manual(0)
pnmtoddif - Convert a PNM image to DDIF format
pnmtoddif [-resolution x y] [pnmfile [ddiffile]]
This program is part of Netpbm(1).
pnmtoddif takes a PNM image and converts it into a DDIF image file.
pnmtoddif writes PBM format (bitmap) data as a 1 bit DDIF, PGM format
data (grayscale) as an 8 bit grayscale DDIF, and PPM format (color)
data as an 8,8,8 bit color DDIF. pnmtoddif writes any DDIF image file
uncompressed. The data plane organization is interleaved by pixel.
In addition to the number of pixels in the width and height dimension,
DDIF images also carry information about the size that the image should
have, that is, the physical space that a pixel occupies. Netpbm images
do not carry this information, hence you have to supply it externally.
The default of 78 dpi has the beneficial property of not causing a
resize on most Digital Equipment Corporation color monitors.
resolution x y
The horizontal and vertical resolution of the output image in
dots per inch. Default is 78 dpi.
The filename for the image file in pnm format. Default is to
read from Standard Input.
The filename for the image file to be created in DDIF format.
By default, pnmtoddif writes to Standard Output.
Burkhard Neidecker-Lutz, Digital Equipment Corporation, CEC Karlsruhe
netpbm documentation 2003 Pnmtoddif User Manual(0)
Man(1) output converted with