[magick-users] Impossibility to creat a FAX CCITT group 4

[Anthony Thyssen]

"Guerid Salim" on  wrote...
| Hi,
| 
| I try without succes to creat a FAX Type S TIFF-F compatible with te command
| : 
| 
| convert FileIN -resize 1728x2255\! -monochrome -units PixelsPerInch -density
| 204x196 -compress group4 -endian lsb FileOut
| 
|  
>From TIFF format notes in IM Examples, Common File Formats
  http://www.imagemagick.org/Usage/formats/#tiff

WARNING:  -compress Group4  with a TIFF works, but ONLY if you remove all
  transparent and semi-transparent pixels from the image.  Typicaly you can
  make sure this is done the same way as JPEG images above, using
        -background {color} -flatten
  just before the final save.

  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
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  "... Ken Thompson, Dennis Ritchie and Brian Kernighan have admitted that
  the operating system and the programming language that they designed is a
  clever April fools-day prank, that has survived the last 20 years. ..."
 				---  Vogon News Service  -- April 1, 1991
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     Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/