bmptopnm(1) General Commands Manual bmptopnm(1)NAME
bmptopnm - convert a BMP file into a portable anymap
SYNOPSIS
bmptopnm [bmpfile]
DESCRIPTION
Reads a Microsoft Windows or OS/2 BMP file as input. Produces a PBM, PGM, or PNM image as output. If the input is colormapped and con-
tains only black and white, the output is PBM. If the input is colormapped and contains only black white and gray, the output is PGM.
Otherwise, the output is PPM.
This program cannot convert BMP files with compressed (run length encoded) image data. It recognizes the compression and issues an error
message.
This program cannot convert BMP files with 16 bits per pixel (only because the author did not have a complete specification for them). It
recognizes the format and issues an error message.
SEE ALSO ppmtobmp(1), ppmtowinicon(1), ppm(5)AUTHOR
Copyright (C) 1992 by David W. Sanderson.
17 February 2002 bmptopnm(1)
Check Out this Related Man Page
pamtopnm(1) General Commands Manual pamtopnm(1)NAME
pamtopnm - convert PAM image to PBM, PGM, or PPM
SYNOPSIS
pamtopnm [-assume] [pnmfile]
All options may be abbreviated to the shortest unique prefix.
DESCRIPTION
Reads a PAM image as input. Produces an equivalent PBM, PGM, or PPM (i.e. PNM) image, whichever is most appropriate, as output.
pamtopnm assumes the PAM image represents the information required for a PBM, PGM, or PPM image if its tuple type is "BLACKANDWHITE",
"GRAYSCALE", or "RGB" and its depth and maxval are appropriate. If this is not the case, pamtopnm fails.
However, you can override the tuple type requirement with the -assume option.
As with any Netpbm program that reads PAM images, pamtopnm also reads PNM images as if they were PAM. In that case, pamtopnm's functions
reduces to simply copying the input to the output. But this can be useful in a program that doesn't know whether its input is PAM or PNM
but needs to feed it to a program that only recognizes PNM.
OPTIONS -assume
When you specify -assume, you tell pamtopnm that you personally vouch for the fact that the tuples contain the same data as belongs
in the channels of a PBM, PGM, or PPM file. The depth must still conform, though, so to truly force a conversion, you may have to
run the input through pamchannel first. But be careful with -assume. When you -assume, you make an -ass of u and me.
SEE ALSO pbmtopgm(1), pgmtopbm(1), pgmtoppm(1), ppmtopgm(1), pam(5), pnm(5), pbm(5), pgm(5), ppm(5)
03 August 2000 pamtopnm(1)
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