Pnmconvol User Manual(0) Pnmconvol User Manual(0) (NAME) pnmconvol - MxN Netpbm (SYNOPSIS) pnmconvol { -matrix=convolution_matrix | -matrixfile=filename[,filename[, ...]] } [-normalize] [-bias=n] [netpbmfile] pnmconvol convolution_matrix_file [-normalize] [-nooffset] [netpbmfile] . . . (DESCRIPTION) Netpbm(1) . pnmconvol Netpbm Netpbm . (blurring) . pamgauss(1) . . ( ) . (Convolution Matrix) <#convolmatrix> . pnmconvol . . pnmpad ( ) . ( pnmpad -left=2 -right=2 -top=1 -bottom=1 ). pnmconvol pamcut ( : pamcut -left=2 -right=-2 -top=1 -bottom=-1). . pnmconvol (clip ) . (clipping) . maxval ( maxval ) . . pnmconvol pnmconvol Netpbm . (Convolution Matrix) : o -matrix. o ( ) -matrixfile -matrix . o PNM. PNM Netpbm 10.49 ( ) . -matrix . -matrix . pnmconvol . . . pnmconvol . . pnmconvol . (tuples) ( RGB ). (Directly On the Command Line) -matrix : -matrix=0,.2,0;.2,.2,.2;0,.2,0 -matrix=-1,3,-1 - (;) . (,) . . . - (";") . . -normalize -matrix () . -normalize -matrix . (Regular Matrix File) -matrixfile (plane) . : -matrixfile=mymatrix -matrixfile=myred,mygreen,myblue ( ) . . . pnmconvol (line feeds) . ..PP (space) . -- . ( ). . () . . -normalize . PNM (PNM File) Netpbm 10.49 ( 2009) . pnmconvol Netpbm Netpbm . Netpbm pnmconvol Netpbm maxval . PNM . -matrix -matrixfile . PNM ( PAM PNM) ( ) . pnmconvol PNM : (offset) . . -nooffset . pnmconvol PNM maxval . (smooth) : P2 3 3 18 2 2 2 2 2 2 2 2 2 ( PGM -- . PGM the PGM format specification(1) ). pnmconvol (2) maxval (18) 9 1/9 . pnmconvol 9 1/9 . maxval 18 0 18 . 0 1 . ( ) PNM 1 maxval . -normalize 1 . -nooffset pnmconvol PNM . pnmconvol maxval maxval . -nooffset PNM : P2 3 3 18 10 10 10 10 10 10 10 10 10 : 10 - 18/2 1 . 18/2 = 9 1/9 - . 5x5 maxval 50 26 . maxval 18 0 18 . -9 9 -1 1 . PGM . PPM . (Other Forms of Convolution) pnmconvol . . pgmmedian (median filtering) . pgmmorphconv (dilation) (erosion) . libnetpbm ( -quiet (Common Options) ) pnmconvol : -matrix=convolution_matrix . <#matrixopt> . -matrixfile . Netpbm 10.49 ( ) . PNM . -matrixfile=filename . <#matrixfile> . -matrix . Netpbm 10.49 ( ) . PNM . -normalize . . -normalize pnmconvol . . pnmconvol . . . : $ pnmconvol myimage.ppm -normalize -matrix=1,1,1;1,1,1;1,1,1 3x3 1/9 (.1111111) . Netpbm 10.50 ( ) . Netpbm 10.79 ( ) pseudo-PNM . -bias=n (sample) . . . Netpbm (bias) (clipped). . bias=100 -5 95 5 105 . maxval . pnmconvol (clip). maxval maxval . . Netpbm 10.68 ( ) . -nooffset= PNM . <#matrixpnm> . (HISTORY) -nooffset Netpbm 10.23 ( ) . Netpbm 10.49 ( ) PNM -matrix -matrixfile . pnmconvol Netpbm maxval . pnmconvol Netpbm PNM -PNM pnmconvol maxval . pnmsmooth(1), pgmmorphconv(1), pgmmedian(1), pnmnlfilt(1), pgmkernel(1), pamgauss(1), pammasksharpen(1), pnmpad(1), pamcut(1), pnm(1) (AUTHORS) (C) 1989 1991 Jef Poskanzer. Mike Burns burns@chem.psu.edu (DOCUMENT SOURCE) Netpbm 'makeman' HTML . : http://netpbm.sourceforge.net/doc/pnmconvol.html netpbm documentation 30 November 2018 Pnmconvol User Manual(0)