Pammasksharpen User Manual(0) Pammasksharpen User Manual(0) (NAME) pammasksharpen - (unsharp mask) (SYNOPSIS) pammasksharpen [-sharpness=realnum] [-threshold=realnum] maskfile [inputfile] . . . (EXAMPLES) pamgauss 5 5 -sigma=.7 -tupletype=GRAYSCALE | pamtopnm > gauss.pgm pnmconvol -nooffset gauss.pgm myimage.ppm > blurred.ppm pammasksharpen blurred.ppm myimage.ppm > sharpened.ppm (DESCRIPTION) Netpbm(1) . pammasksharpen Netpbm (sharpened) . (unsharp mask) Netpbm . . : <<>> (edgeness) . . . (clip) . . . maxval . (The Unsharp Mask) (Gaussian blur) pamgauss pnmconvol . (convolution kernel) pnmconvol . . <<>> (radius) . R 2R+1 . . . . . . ( ) . ( -sharpness ) : . (OPTIONS) libnetpbm ( -quiet (Common Options) ) pammasksharpen : -sharpness=realnum . . realnum . . ImageMagick "amount" . 1.0 . Netpbm 10.30 ( ) . sharpness 1.0 . -threshold=realnum . pammasksharpen . (speckling) . maxval ( [0, 1.0] ). 0 . Netpbm 10.34 ( ) . (SEE ALSO) pnmconvol(1), pamedge(1), pamsharpness(1), pamsharpmap(1), pamarith(1), pnm(1), pam(1) (HISTORY) pammasksharpen Netpbm 10.23 ( ) . (DOCUMENT SOURCE) Netpbm 'makeman' HTML . : http://netpbm.sourceforge.net/doc/pammasksharpen.html netpbm documentation 14 June 2006 Pammasksharpen User Manual(0)