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%%DocumentFonts: (atend)
%%Pages: (atend)
%%EndComments
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% Version 3.3.2 prologue for troff files.
%

/#copies 1 store
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/landscape false def
/linewidth .3 def
/magnification 1 def
/margin 0 def
/orientation 0 def
/resolution 720 def
/rotation 1 def
/xoffset 0 def
/yoffset 0 def

/roundpage true def
/useclippath true def
/pagebbox [0 0 612 792] def

/R  /Times-Roman def
/I  /Times-Italic def
/B  /Times-Bold def
/BI /Times-BoldItalic def
/H  /Helvetica def
/HI /Helvetica-Oblique def
/HB /Helvetica-Bold def
/HX /Helvetica-BoldOblique def
/CW /Courier def
/CO /Courier def
/CI /Courier-Oblique def
/CB /Courier-Bold def
/CX /Courier-BoldOblique def
/PA /Palatino-Roman def
/PI /Palatino-Italic def
/PB /Palatino-Bold def
/PX /Palatino-BoldItalic def
/Hr /Helvetica-Narrow def
/Hi /Helvetica-Narrow-Oblique def
/Hb /Helvetica-Narrow-Bold def
/Hx /Helvetica-Narrow-BoldOblique def
/KR /Bookman-Light def
/KI /Bookman-LightItalic def
/KB /Bookman-Demi def
/KX /Bookman-DemiItalic def
/AR /AvantGarde-Book def
/AI /AvantGarde-BookOblique def
/AB /AvantGarde-Demi def
/AX /AvantGarde-DemiOblique def
/NR /NewCenturySchlbk-Roman def
/NI /NewCenturySchlbk-Italic def
/NB /NewCenturySchlbk-Bold def
/NX /NewCenturySchlbk-BoldItalic def
/ZD /ZapfDingbats def
/ZI /ZapfChancery-MediumItalic def
/S  /S def
/S1 /S1 def
/GR /Symbol def

/inch {72 mul} bind def
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	pagedimensions
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	addmetrics
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/pagedimensions {
	useclippath userdict /gotpagebbox known not and {
		/pagebbox [clippath pathbbox newpath] def
		roundpage currentdict /roundpagebbox known and {roundpagebbox} if
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	pagebbox aload pop
	4 -1 roll exch 4 1 roll 4 copy
	landscape {4 2 roll} if
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	add 2 div /xcenter exch def
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/addmetrics {
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/decodingdefs [
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	{neg setfunnytext}
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/setdecoding {/t decodingdefs 3 -1 roll get bind def} bind def

/w {neg moveto show} bind def
/m {neg dup /y exch def moveto} bind def
/done {/lastpage where {pop lastpage} if} def

/f {
	dup /font exch def findfont exch
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	/spacewidth ( ) stringwidth pop def
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/changefont {
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	currentfont [
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/sf {f} bind def

/cf {
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	findfont dup length 1 add dict
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	newencoding type /arraytype eq {newdict /Encoding newencoding put} if

	newdict /Metrics entries dict put
	newdict /Metrics get
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} bind def

%
% A few arrays used to adjust reference points and character widths in some
% of the printer resident fonts. If square roots are too high try changing
% the lines describing /radical and /radicalex to,
%
%	/radical	[0 -75 550 0]
%	/radicalex	[-50 -75 500 0]
%
% Move braceleftbt a bit - default PostScript character is off a bit.
%

/Sdefs [
	/bracketlefttp		[201 500]
	/bracketleftbt		[201 500]
	/bracketrighttp		[-81 380]
	/bracketrightbt		[-83 380]
	/braceleftbt		[203 490]
	/bracketrightex		[220 -125 500 0]
	/radical		[0 0 550 0]
	/radicalex		[-50 0 500 0]
	/parenleftex		[-20 -170 0 0]
	/integral		[100 -50 500 0]
	/infinity		[10 -75 730 0]
] def

/S1defs [
	/underscore		[0 80 500 0]
	/endash			[7 90 650 0]
] def
%
% Tries to round clipping path dimensions, as stored in array pagebbox, so they
% match one of the known sizes in the papersizes array. Lower left coordinates
% are always set to 0.
%

/roundpagebbox {
    7 dict begin
	/papersizes [8.5 inch 11 inch 14 inch 17 inch] def

	/mappapersize {
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			papersizes i get val sub abs
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	pagebbox 0 0 put
	pagebbox 1 0 put
	pagebbox dup 2 get mappapersize 2 exch put
	pagebbox dup 3 get mappapersize 3 exch put
    end
} bind def

%%EndProlog
%%BeginSetup
mark
%
% Encoding vector and redefinition of findfont for the ISO Latin1 standard.
% The 18 characters missing from ROM based fonts on older printers are noted
% below.
%

/ISOLatin1Encoding [
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
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	/.notdef
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	/.notdef
	/space
	/exclam
	/quotedbl
	/numbersign
	/dollar
	/percent
	/ampersand
	/quoteright
	/parenleft
	/parenright
	/asterisk
	/plus
	/comma
	/minus
	/period
	/slash
	/zero
	/one
	/two
	/three
	/four
	/five
	/six
	/seven
	/eight
	/nine
	/colon
	/semicolon
	/less
	/equal
	/greater
	/question
	/at
	/A
	/B
	/C
	/D
	/E
	/F
	/G
	/H
	/I
	/J
	/K
	/L
	/M
	/N
	/O
	/P
	/Q
	/R
	/S
	/T
	/U
	/V
	/W
	/X
	/Y
	/Z
	/bracketleft
	/backslash
	/bracketright
	/asciicircum
	/underscore
	/quoteleft
	/a
	/b
	/c
	/d
	/e
	/f
	/g
	/h
	/i
	/j
	/k
	/l
	/m
	/n
	/o
	/p
	/q
	/r
	/s
	/t
	/u
	/v
	/w
	/x
	/y
	/z
	/braceleft
	/bar
	/braceright
	/asciitilde
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/dotlessi
	/grave
	/acute
	/circumflex
	/tilde
	/macron
	/breve
	/dotaccent
	/dieresis
	/.notdef
	/ring
	/cedilla
	/.notdef
	/hungarumlaut
	/ogonek
	/caron
	/space
	/exclamdown
	/cent
	/sterling
	/currency
	/yen
	/brokenbar		% missing
	/section
	/dieresis
	/copyright
	/ordfeminine
	/guillemotleft
	/logicalnot
	/hyphen
	/registered
	/macron
	/degree			% missing
	/plusminus		% missing
	/twosuperior		% missing
	/threesuperior		% missing
	/acute
	/mu			% missing
	/paragraph
	/periodcentered
	/cedilla
	/onesuperior		% missing
	/ordmasculine
	/guillemotright
	/onequarter		% missing
	/onehalf		% missing
	/threequarters		% missing
	/questiondown
	/Agrave
	/Aacute
	/Acircumflex
	/Atilde
	/Adieresis
	/Aring
	/AE
	/Ccedilla
	/Egrave
	/Eacute
	/Ecircumflex
	/Edieresis
	/Igrave
	/Iacute
	/Icircumflex
	/Idieresis
	/Eth			% missing
	/Ntilde
	/Ograve
	/Oacute
	/Ocircumflex
	/Otilde
	/Odieresis
	/multiply		% missing
	/Oslash
	/Ugrave
	/Uacute
	/Ucircumflex
	/Udieresis
	/Yacute			% missing
	/Thorn			% missing
	/germandbls
	/agrave
	/aacute
	/acircumflex
	/atilde
	/adieresis
	/aring
	/ae
	/ccedilla
	/egrave
	/eacute
	/ecircumflex
	/edieresis
	/igrave
	/iacute
	/icircumflex
	/idieresis
	/eth			% missing
	/ntilde
	/ograve
	/oacute
	/ocircumflex
	/otilde
	/odieresis
	/divide			% missing
	/oslash
	/ugrave
	/uacute
	/ucircumflex
	/udieresis
	/yacute			% missing
	/thorn			% missing
	/ydieresis
] def

/NewFontDirectory FontDirectory maxlength dict def

%
% Apparently no guarantee findfont is defined in systemdict so the obvious
%
%	systemdict /findfont get exec
%
% can generate an error. So far the only exception is a VT600 (version 48.0).
%

userdict /@RealFindfont known not {
	userdict begin
		/@RealFindfont systemdict begin /findfont load end def
	end
} if

/findfont {
	dup NewFontDirectory exch known not {
		dup
		%dup systemdict /findfont get exec	% not always in systemdict
		dup userdict /@RealFindfont get exec
		dup /Encoding get StandardEncoding eq {
			dup length dict begin
				{1 index /FID ne {def}{pop pop} ifelse} forall
				/Encoding ISOLatin1Encoding def
				currentdict
			end
			/DummyFontName exch definefont
		} if
		NewFontDirectory 3 1 roll put
	} if
	NewFontDirectory exch get
} bind def

setup
%%EndSetup
%%Page: 1 1
/saveobj save def
mark
1 pagesetup
12 /Times-Bold f
(Pbmtopgm) 2246 1230 w
(User) 2843 1230 w
(Manual) 3112 1230 w
10 /Times-Bold f
(pbmtopgm) 720 1920 w
10 /Times-Roman f
(Updated: 05 Feb 2003 Table Of Contents) 720 2112 w
10 /Times-Bold f
(NAME) 720 2352 w
10 /Times-Roman f
(pbmtopgm \255 convert PBM image to PGM by averaging areas) 720 2508 w
10 /Times-Bold f
(SYNOPSIS) 720 2748 w
(pbmtopgm) 720 2904 w
10 /Times-Italic f
(width height) 1212 2904 w
10 /Times-Roman f
([) 1735 2904 w
10 /Times-Italic f
(pbmfile) 1768 2904 w
10 /Times-Roman f
(]) 2068 2904 w
10 /Times-Bold f
(DESCRIPTION) 720 3144 w
10 /Times-Roman f
(This program is part of Netpbm.) 720 3336 w
10 /Times-Bold f
(pbmtopgm) 720 3492 w
10 /Times-Roman f
(reads) 1218 3492 w
(a) 1460 3492 w
(PBM) 1536 3492 w
(image) 1780 3492 w
(as) 2056 3492 w
(input.) 2171 3492 w
(It) 2459 3492 w
(outputs) 2552 3492 w
(a) 2879 3492 w
(PGM) 2955 3492 w
(image) 3204 3492 w
(in) 3480 3492 w
(which) 3590 3492 w
(each) 3866 3492 w
(pixel's) 4080 3492 w
(gray) 4384 3492 w
(level) 4593 3492 w
(is) 4819 3492 w
(the) 4918 3492 w
(average) 720 3612 w
(of) 1062 3612 w
(the) 1178 3612 w
(surrounding) 1333 3612 w
(black) 1849 3612 w
(and) 2098 3612 w
(white) 2275 3612 w
(input) 2530 3612 w
(pixels.) 2769 3612 w
(The) 3091 3612 w
(surrounding) 3279 3612 w
(area) 3795 3612 w
(is) 3993 3612 w
(a) 4093 3612 w
(rectangle) 4170 3612 w
(of) 4568 3612 w
10 /Times-Italic f
(width) 4684 3612 w
10 /Times-Roman f
(by) 4940 3612 w
10 /Times-Italic f
(height) 720 3732 w
10 /Times-Roman f
(pixels.) 995 3732 w
(In other words, this is a convolution.) 720 3888 w
10 /Times-Bold f
(pbmtopgm) 2236 3888 w
10 /Times-Roman f
(is similar to a special case of) 2728 3888 w
10 /Times-Bold f
(pnmconvol) 3901 3888 w
10 /Times-Roman f
(.) 4374 3888 w
(You may need a) 720 4044 w
10 /Times-Bold f
(pnmsmooth) 1396 4044 w
10 /Times-Roman f
(step after) 1927 4044 w
10 /Times-Bold f
(pbmtopgm) 2320 4044 w
10 /Times-Roman f
(.) 2787 4044 w
10 /Times-Bold f
(pbmtopgm) 720 4200 w
10 /Times-Roman f
(has the effect of anti\255aliasing bitmaps which contain distinct line features.) 1212 4200 w
10 /Times-Bold f
(pbmtopgm) 720 4356 w
10 /Times-Roman f
(works best with odd sample width and heights.) 1212 4356 w
(You) 720 4512 w
(don't) 918 4512 w
(need) 1155 4512 w
10 /Times-Bold f
(pbmtopgm) 1369 4512 w
10 /Times-Roman f
(just) 1863 4512 w
(to) 2035 4512 w
(use) 2140 4512 w
(a) 2300 4512 w
(PGM) 2371 4512 w
(program) 2615 4512 w
(on) 2980 4512 w
(a) 3107 4512 w
(PBM) 3178 4512 w
(image.) 3417 4512 w
(Any) 3738 4512 w
(PGM) 3937 4512 w
(program) 4181 4512 w
(\(assuming) 4546 4512 w
(it) 4984 4512 w
(uses) 720 4632 w
(the) 924 4632 w
(Netpbm) 1078 4632 w
(libraries) 1432 4632 w
(to) 1791 4632 w
(read) 1901 4632 w
(the) 2103 4632 w
(PGM) 2256 4632 w
(input\)) 2504 4632 w
(takes) 2774 4632 w
(PBM) 3010 4632 w
(input) 3253 4632 w
(as) 3490 4632 w
(if) 3604 4632 w
(it) 3696 4632 w
(were) 3783 4632 w
(PGM,) 4007 4632 w
(with) 4280 4632 w
(only) 4489 4632 w
(the) 4698 4632 w
(min\255) 4851 4632 w
(inum) 720 4752 w
(and) 955 4752 w
(maximum) 1128 4752 w
(gray) 1563 4752 w
(levels.) 1769 4752 w
(So) 2081 4752 w
(unless) 2216 4752 w
(your) 2495 4752 w
(convolution) 2707 4752 w
(rectangle) 3214 4752 w
(is) 3609 4752 w
(bigger) 3706 4752 w
(than) 3991 4752 w
(one) 4193 4752 w
(pixel,) 4367 4752 w
(you're) 4622 4752 w
(not) 4912 4752 w
(gaining anything with a) 720 4872 w
10 /Times-Bold f
(pbmtopgm) 1692 4872 w
10 /Times-Roman f
(step.) 2184 4872 w
(The opposite transformation \(which would turn a PGM into a PBM\) is dithering.) 720 5028 w
(See) 3999 5028 w
10 /Times-Bold f
(pamditherbw) 4168 5028 w
10 /Times-Roman f
(.) 4746 5028 w
10 /Times-Bold f
(SEE ALSO) 720 5268 w
(pamditherbw) 720 5424 w
10 /Times-Roman f
(,) 1298 5424 w
10 /Times-Bold f
(pnmconvol) 1348 5424 w
10 /Times-Roman f
(,) 1821 5424 w
10 /Times-Bold f
(pbm) 1871 5424 w
10 /Times-Roman f
(,) 2066 5424 w
10 /Times-Bold f
(pgm) 2116 5424 w
(AUTHOR) 720 5664 w
10 /Times-Roman f
(Copyright \(C\) 1990 by Angus Duggan.) 720 5856 w
(Copyright \(C\) 1989 by Jef Poskanzer.) 720 6012 w
(Permission) 720 6168 w
(to) 1201 6168 w
(use,) 1315 6168 w
(copy,) 1509 6168 w
(modify,) 1764 6168 w
(and) 2114 6168 w
(distribute) 2294 6168 w
(this) 2708 6168 w
(software) 2889 6168 w
(and) 3268 6168 w
(its) 3448 6168 w
(documentation) 3579 6168 w
(for) 4209 6168 w
(any) 4362 6168 w
(purpose) 4543 6168 w
(and) 4896 6168 w
(without) 720 6288 w
(fee) 1060 6288 w
(is) 1215 6288 w
(hereby) 1316 6288 w
(granted,) 1621 6288 w
(provided) 1979 6288 w
(that) 2368 6288 w
(the) 2552 6288 w
(above) 2708 6288 w
(copyright) 2979 6288 w
(notice) 3395 6288 w
(appear) 3672 6288 w
(in) 3970 6288 w
(all) 4081 6288 w
(copies) 4214 6288 w
(and) 4502 6288 w
(that) 4679 6288 w
(both) 4862 6288 w
(that) 720 6408 w
(copyright) 898 6408 w
(notice) 1309 6408 w
(and) 1581 6408 w
(this) 1753 6408 w
(permission) 1927 6408 w
(notice) 2395 6408 w
(appear) 2668 6408 w
(in) 2962 6408 w
(supporting) 3069 6408 w
(documentation.) 3526 6408 w
(This) 4199 6408 w
(software) 4406 6408 w
(is) 4778 6408 w
(pro\255) 4874 6408 w
(vided "as is" without express or implied warranty.) 720 6528 w
10 /S1 f
(________________________________________________________________________) 720 6648 w
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showpage
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%%EndPage: 1 1
%%Page: 2 2
/saveobj save def
mark
2 pagesetup
10 /Times-Roman f
(\255 2 \255) 2797 480 w
10 /Times-Bold f
(Table Of Contents) 720 840 w
10 /LucidaSansUnicode22 f
(\031) 720 1032 w
10 /Times-Roman f
(NAME) 970 1032 w
10 /LucidaSansUnicode22 f
(\031) 720 1188 w
10 /Times-Roman f
(SYNOPSIS) 970 1188 w
10 /LucidaSansUnicode22 f
(\031) 720 1344 w
10 /Times-Roman f
(DESCRIPTION) 970 1344 w
10 /LucidaSansUnicode22 f
(\031) 720 1500 w
10 /Times-Roman f
(SEE ALSO) 970 1500 w
10 /LucidaSansUnicode22 f
(\031) 720 1656 w
10 /Times-Roman f
(AUTHOR) 970 1656 w
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%%EndPage: 2 2
%%Trailer
done
%%DocumentFonts: Times-Roman LucidaSansUnicode22 Times-Italic Times-Bold S1
%%Pages: 2