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Bmptopnm User Manual(0) Bmptopnm User Manual(0)
NAME
bmptopnm - convert a BMP file into a PBM, PGM, or PNM image
SYNOPSIS
bmptopnm
[-verbose]
[bmpfile]
DESCRIPTION
This program is part of Netpbm(1).
bmptopnm reads a Microsoft Windows or OS/2 BMP file as input. and pro-
duces a PBM, PGM, or PNM image as output. If the input is colormapped
and contains 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.
bmptopnm understands BMP files compressed with run length encoding
(RLE4/RLE8), but not if that encoding includes a "delta" (which is
rare). bmptopnm recognizes the delta and issues an error message.
Before Netpbm 10.75 (June 2016), bmptopnm could not convert Version 4
or Version 5 Windows BMP images.
bmptopnm cannot convert BMP files compressed with JPEG or PNG encoding.
It recognizes the compression and issues an error message. Before
Netpbm 10.32 (February 2006), bmptopnm couldn't convert RLE BMP files
either.
Before Netpbm 10.18 (September 2003), this program could not convert
BMP images with the BI_BITFIELDS format ("compression type"). It would
recognize the format and issue an error message.
bmptopnm cannot convert OS/2 BMP files with 16 bits per pixel (only be-
cause the author did not have a complete specification for them). It
recognizes the format and issues an error message. Before Netpbm 10.16
(June 2003), it also could not convert Windows BMP files with 16 bits
per pixel.
SEE ALSO
ppmtobmp(1), ppmtowinicon(1), ppm(5)
AUTHOR
Copyright (C) 1992 by David W. Sanderson.
DOCUMENT SOURCE
This manual page was generated by the Netpbm tool 'makeman' from HTML
source. The master documentation is at
http://netpbm.sourceforge.net/doc/bmptopnm.html
netpbm documentation 20 September 2010 Bmptopnm User Manual(0)
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