Pamditherbw User Manual(0) Pamditherbw User Manual(0) (NAME) pamditherbw - (SYNOPSIS) pamditherbw [-floyd | -fs | -atkinson | -threshold | -hilbert | -dither8 | -d8 | -cluster3 | -c3 | -cluster4 | -c4 | -cluster8 | -c8] [-value val] [-clump size] [-randomseed=integer] [pamfile] . (DESCRIPTION) Netpbm(1) . pamditherbw (grayscale) (dither) . . PGM PAM GRAYSCALE . pamditherbw PPM ( ). PAM BLACKANDWHITE . pamtopnm PBM ( PAM ). pamscale pnmsmooth pnmconvol . pbmtopgm . ( ) ppmdither . (thresholding) . . . pamditherbw -threshold . pamthreshold . PGM maxval 1 PBM pamtopnm . (OPTIONS) libnetpbm ( -quiet (Common Options) ) pamditherbw : (Quantization Method) - (boustrophedonic Floyd-Steinberg error diffusion) (-floyd -fs). : (-threshold) (-dither8) x (Atkinson) (-cluster3 -cluster4 -cluster8). (halftoning) (-hilbert). - . pnmconvol . . - . ( ) . . -clump (clump) . PGM ( A4 300 dpi) PBM . : pamscale -xysize 2400 3000 image.pgm | pamditherbw -hilbert | \ pamtopnm | pnmtops -scale 0.25 > image.ps (Other Options) -value - . 0 1 . 0.5 0.5 . -clump (clump) . ( ). . -randomseed=integer - . (seed) . . . pamditherbw (process ID) . Netpbm 10.45 ( ) . (REFERENCES) "Digital Halftoning" Robert Ulichney MIT Press 0-262-21009-6 . "Digital Halftoning with Space Filling Curves" Luiz Velho Computer Graphics SIGGRAPH '91 0-89791-436-8 . (SEE ALSO) pamtopnm(1), pgmtopgm(1), pbmtopgm(1), pamthreshold(1), pbmreduce(1), pnmconvol(1), pamscale(1), pam(1), pnm(1), (HISTORY) pamditherbw Netpbm 10.23 ( ) pgmtopbm . pamditherbw ( pgmtopbm ) PGM PBM PAM PAM . pamditherbw pgmtopbm . -atkinson Netpbm 10.38 ( ) . (AUTHOR) (C) Jef Poskanzer. (DOCUMENT SOURCE) Netpbm 'makeman' HTML . : http://netpbm.sourceforge.net/doc/pamditherbw.html netpbm documentation 10 May 2010 Pamditherbw User Manual(0)