%!PS-Adobe-2.0
%%Version: 0.1
%%DocumentFonts: (atend)
%%Pages: (atend)
%%EndComments
%
% Version 3.3.2 prologue for troff files.
%

/#copies 1 store
/aspectratio 1 def
/formsperpage 1 def
/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
/min {2 copy gt {exch} if pop} bind def

/setup {
	counttomark 2 idiv {def} repeat pop

	landscape {/orientation 90 orientation add def} if
	/scaling 72 resolution div def
	linewidth setlinewidth
	1 setlinecap

	pagedimensions
	xcenter ycenter translate
	orientation rotation mul rotate
	width 2 div neg height 2 div translate
	xoffset inch yoffset inch neg translate
	margin 2 div dup neg translate
	magnification dup aspectratio mul scale
	scaling scaling scale

	addmetrics
	0 0 moveto
} def

/pagedimensions {
	useclippath userdict /gotpagebbox known not and {
		/pagebbox [clippath pathbbox newpath] def
		roundpage currentdict /roundpagebbox known and {roundpagebbox} if
	} if
	pagebbox aload pop
	4 -1 roll exch 4 1 roll 4 copy
	landscape {4 2 roll} if
	sub /width exch def
	sub /height exch def
	add 2 div /xcenter exch def
	add 2 div /ycenter exch def
	userdict /gotpagebbox true put
} def

/addmetrics {
	/Symbol /S null Sdefs cf
	/Times-Roman /S1 StandardEncoding dup length array copy S1defs cf
} def

/pagesetup {
	/page exch def
	currentdict /pagedict known currentdict page known and {
		page load pagedict exch get cvx exec
	} if
} def

/decodingdefs [
	{counttomark 2 idiv {y moveto show} repeat}
	{neg /y exch def counttomark 2 idiv {y moveto show} repeat}
	{neg moveto {2 index stringwidth pop sub exch div 0 32 4 -1 roll widthshow} repeat}
	{neg moveto {spacewidth sub 0.0 32 4 -1 roll widthshow} repeat}
	{counttomark 2 idiv {y moveto show} repeat}
	{neg setfunnytext}
] def

/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
	dup /ptsize exch def scaling div dup /size exch def scalefont setfont
	linewidth ptsize mul scaling 10 mul div setlinewidth
	/spacewidth ( ) stringwidth pop def
} bind def

/changefont {
	/fontheight exch def
	/fontslant exch def
	currentfont [
		1 0
		fontheight ptsize div fontslant sin mul fontslant cos div
		fontheight ptsize div
		0 0
	] makefont setfont
} bind def

/sf {f} bind def

/cf {
	dup length 2 idiv
	/entries exch def
	/chtab exch def
	/newencoding exch def
	/newfont exch def

	findfont dup length 1 add dict
	/newdict exch def
	{1 index /FID ne {newdict 3 1 roll put}{pop pop} ifelse} forall

	newencoding type /arraytype eq {newdict /Encoding newencoding put} if

	newdict /Metrics entries dict put
	newdict /Metrics get
	begin
		chtab aload pop
		1 1 entries {pop def} for
		newfont newdict definefont pop
	end
} 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 {
		/val exch def
		/slop .5 inch def
		/diff slop def
		/j 0 def
		0 1 papersizes length 1 sub {
			/i exch def
			papersizes i get val sub abs
			dup diff le {/diff exch def /j i def} {pop} ifelse
		} for
		diff slop lt {papersizes j get} {val} ifelse
	} def

	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
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.notdef
	/.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
(Pgmdeshadow User) 2160 1230 w
(Manual) 3199 1230 w
10 /Times-Bold f
(pgmdeshadow) 720 1920 w
10 /Times-Roman f
(Updated: 06 July 2006) 720 2076 w
(Table Of Contents) 720 2232 w
10 /Times-Bold f
(NAME) 720 2472 w
10 /Times-Roman f
(pgmdeshadow \255 Deshadow a PGM image) 720 2628 w
10 /Times-Bold f
(SYNOPSIS) 720 2868 w
(pgmdeshadow) 720 3024 w
10 /Times-Roman f
([) 1357 3024 w
10 /Times-Italic f
(pnmfile) 1390 3024 w
10 /Times-Roman f
(]) 1690 3024 w
10 /Times-Bold f
(DESCRIPTION) 720 3264 w
10 /Times-Roman f
(This program is part of Netpbm.) 720 3456 w
10 /Times-Bold f
(pgmdeshadow) 720 3612 w
10 /Times-Roman f
(removes) 1360 3612 w
(gray) 1726 3612 w
(shadows) 1931 3612 w
(from) 2304 3612 w
(an) 2527 3612 w
(image.) 2650 3612 w
(This) 2973 3612 w
(is) 3180 3612 w
(useful) 3276 3612 w
(for) 3549 3612 w
(an) 3694 3612 w
(image) 3817 3612 w
(containing) 4090 3612 w
(text,) 4541 3612 w
(such) 4745 3612 w
(as) 4957 3612 w
(a) 720 3732 w
(scanned) 790 3732 w
(book) 1137 3732 w
(pages,) 1363 3732 w
(where) 1641 3732 w
(a) 1910 3732 w
(shadow) 1980 3732 w
(typically) 2311 3732 w
(appears near the book crease or near one side of the image.) 2687 3732 w
10 /Times-Bold f
(pgmdeshadow) 720 3852 w
10 /Times-Roman f
(recognizes) 1368 3852 w
(a) 1830 3852 w
(gray) 1910 3852 w
(shadow) 2123 3852 w
(as) 2464 3852 w
(an) 2583 3852 w
(area) 2713 3852 w
(of) 2914 3852 w
(smoothly) 3033 3852 w
(changing) 3442 3852 w
(color,) 3844 3852 w
(starting) 4110 3852 w
(from) 4446 3852 w
(the) 4676 3852 w
(outer) 4835 3852 w
(edges) 720 3972 w
(of) 976 3972 w
(the) 1088 3972 w
(image.) 1239 3972 w
(The) 1562 3972 w
(program) 1746 3972 w
(uses) 2113 3972 w
(a) 2314 3972 w
(simple) 2386 3972 w
(image) 2681 3972 w
(reconstruction) 2953 3972 w
(algorithm) 3552 3972 w
(to) 3969 3972 w
(determine) 4075 3972 w
(the) 4502 3972 w
(local) 4652 3972 w
(sha\255) 4874 3972 w
(dow gray level, then divides each pixel's gray level by the local shadow gray level.) 720 4092 w
(The) 720 4248 w
(algorithm) 904 4248 w
(is) 1322 4248 w
(the) 1418 4248 w
("fast) 1569 4248 w
(hybrid) 1783 4248 w
(grayscale) 2073 4248 w
(reruction") 2478 4248 w
(algorithm) 2908 4248 w
(from) 3326 4248 w
(Luc) 3549 4248 w
(Vincent,) 3733 4248 w
("Morphological) 4104 4248 w
(Grays\255) 4769 4248 w
(cale Reruction in Image Analysis: Applications and Efficient Algorithms.) 720 4368 w
10 /Times-Bold f
(OPTIONS) 720 4608 w
10 /Times-Roman f
(None.) 720 4800 w
10 /Times-Bold f
(REFERENCES) 720 5040 w
10 /LucidaSansUnicode22 f
(\031) 720 5232 w
10 /Times-Roman f
(Luc) 970 5232 w
(Vincent,) 1168 5232 w
("Morphological) 1552 5232 w
(Grayscale) 2231 5232 w
(Reruction) 2673 5232 w
(in) 3111 5232 w
(Image) 3233 5232 w
(Analysis:) 3526 5232 w
(Applications) 3948 5232 w
(and) 4503 5232 w
(Efficient) 4691 5232 w
(Algorithms," IEEE Transactions on Image Processing, vol. 2, no. 2, April 1993, pp. 176\255201.) 970 5352 w
10 /Times-Bold f
(SEE ALSO) 720 5628 w
10 /Times-Roman f
(ppmshadow, pgm) 720 5784 w
10 /Times-Bold f
(HISTORY) 720 6024 w
(pgmdeshadow) 720 6216 w
10 /Times-Roman f
(was added to Netpbm in Version 10.35 \(August 2006\).) 1357 6216 w
10 /S1 f
(________________________________________________________________________) 720 6336 w
10 /Times-Bold f
(Table Of Contents) 720 6576 w
10 /LucidaSansUnicode22 f
(\031) 720 6768 w
10 /Times-Roman f
(SYNOPSIS) 970 6768 w
10 /LucidaSansUnicode22 f
(\031) 720 6924 w
10 /Times-Roman f
(DESCRIPTION) 970 6924 w
10 /LucidaSansUnicode22 f
(\031) 720 7080 w
10 /Times-Roman f
(OPTIONS) 970 7080 w
10 /LucidaSansUnicode22 f
(\031) 720 7236 w
10 /Times-Roman f
(REFERENCES) 970 7236 w
cleartomark
showpage
saveobj restore
%%EndPage: 1 1
%%Page: 2 2
/saveobj save def
mark
2 pagesetup
10 /Times-Roman f
(\255 2 \255) 2797 480 w
10 /LucidaSansUnicode22 f
(\031) 720 840 w
10 /Times-Roman f
(SEE ALSO) 970 840 w
10 /LucidaSansUnicode22 f
(\031) 720 996 w
10 /Times-Roman f
(HISTORY) 970 996 w
cleartomark
showpage
saveobj restore
%%EndPage: 2 2
%%Trailer
done
%%DocumentFonts: Times-Roman LucidaSansUnicode22 Times-Italic Times-Bold S1
%%Pages: 2