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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 [bmpfile]


DESCRIPTION
       This program is part of Netpbm(1).

       bmptopnm reads a Microsoft Windows or OS/2 BMP file as input.  and produces 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.

       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 because 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(1)


AUTHOR
       Copyright (C) 1992 by David W. Sanderson.



netpbm documentation           24 February 2006        Bmptopnm User Manual(0)