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pbmclean(1) [redhat man page]

pbmclean(1)						      General Commands Manual						       pbmclean(1)

NAME
pbmclean - flip isolated pixels in portable bitmap SYNOPSIS
pbmclean [-minneighbors=N] [-black|-white] [pbmfile] You can use the minimum unique abbreviation of the options. You can use two hyphens instead of one. You can separate an option name from its value with white space instead of an equals sign. Before December 2001, pbmclean accepted -N instead of -minneighbors. DESCRIPTION
pbmclean cleans up a PBM image of random specs. It reads a PBM image as input and outputs a PBM that is the same as the input except with every pixel which has less than N identical neighbours inverted. The default for N is 1 - only completely isolated pixels are flipped. (A value of N greater than 8 generates a completely inverted image (but use pnminvert to do that) -- or a completely white or completely black image with the -black or -white option). pbmclean considers the area beyond the edges of the image to be white. (This matters when you consider pixels right on the edge of the image). You can use pbmclean to clean up "snow" on bitmap images. OPTIONS
-black -white Flip pixels of the specified color. By default, if you specify neither -black nor -white, pbmclean flips both black and white pix- els which do not have sufficient identical neighbors. If you specify -black, pbmclean leaves the white pixels alone and just erases isolated black pixels. Vice versa for -white. You may specify both -black and -white to get the same as the default behavior. SEE ALSO
pbm(5) AUTHOR
Copyright (C) 1990 by Angus Duggan Copyright (C) 1989 by Jef Poskanzer. Copyright (C) 2001 by Michael Sternberg. Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, pro- vided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in sup- porting documentation. This software is provided "as is" without express or implied warranty. 18 Oct 2001 pbmclean(1)

Check Out this Related Man Page

pnmpad(1)                                                     General Commands Manual                                                    pnmpad(1)

NAME
pnmpad - add borders to portable anymap SYNOPSIS
pnmpad [-verbose] [-white|-black] [[[-width=width [-halign=ratio]] | [-left=leftpad] [-right=rightpad]]] [[[-height=height [-valign=ratio]] | [-top=toppad] [-bottom=botpad]]] [pnmfile] All options can be abbreviated to their shortest unique prefix. You may use two hyphens instead of one to designate an option. You may use either white space or an equals sign between an option name and its value. DESCRIPTION
Reads a PNM image as input. Outputs a PNM image that is the input image plus black or white borders of the sizes specified. If you just need to convert an image to a certain size regardless of the original dimensions, pnmcut with the -pad option may be a better choice. OPTIONS
-verbose Verbose output. -white -black (default) Set pad color. -left leftpad -right rightpad -top toppad -bottom bottompad Specify amount of padding in pixels. -width width Set desired width of image. Overrides -left and -right if specified. If width is less than the actual image width, it is ignored. Use pnmcut(1) to cut off parts of images. -height height Set desired height of image. Overrides -top and -bottom if specified. If height is less than the actual image height, it is ignored. Use pnmcut(1) to cut off parts of images. -halign ratio A real number between 0 and 1. Used in conjunction with -width, sets the alignment ratio between left padding and right padding. Useful values: 0.0 - left aligned; 0.5 - center aligned (default); 1.0 - right aligned. -valign ratio A real number between 0 and 1. Used in conjunction with -height, sets the alignment ratio between bottom padding and top padding. Useful values: 0.0 - bottom aligned; 0.5 - center aligned (default); 1.0 - top aligned. HISTORY
Before February 2002, pnmpad had a different option syntax which was less expressive and not like conventional Netpbm programs. That syntax is still understood by pnmpad for backward compatibility, but not documented or supported for future use. SEE ALSO
pbmmake(1), pnmpaste(1), pnmcut(1), pnmcrop(1), pbm(5) AUTHOR
Copyright (C) 2002 by Martin van Beilen Copyright (C) 1990 by Angus Duggan Copyright (C) 1989 by Jef Poskanzer. Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, pro- vided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in sup- porting documentation. This software is provided "as is" without express or implied warranty. 26 January 2002 pnmpad(1)
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