NAME pammasksharpen – Sharpen an image via an unsharp mask SYNOPSIS pammasksharpen [-sharpness=realnum] [-threshold=realnum] maskfile [inputfile] All options can be abbreviated to their shortest unique prefix. You may use two hyphens instead of one. You may separate an option name and its value with white space instead of an equals sign. EXAMPLES pamgauss 5 5…
NAME pamlookup – map an image to a new image by using it as indices into a table SYNOPSIS pamlookup -lookupfile=lookupfile -missingcolor=color [-fit] indexfile All options can be abbreviated to their shortest unique prefix. You may use two hyphens instead of one. You may separate an option name and its value with white space instead…
NAME pamgradient – create a four-corner gradient PAM image SYNOPSIS pamgradient [-maxval=maxval] color-tl color-tr color-bl color-br width height Minimum unique abbreviation of option is acceptable. You may use double hyphens instead of single hyphen to denote options. You may use white space in place of the equals sign to separate an option name from…
NAME pamgauss – create a two dimensional gaussian function as a PAM image SYNOPSIS pamgauss width height -sigma=number [-maxval=number] [-tupletype=string] Minimum unique abbreviation of option is acceptable. You may use double hyphens instead of single hyphen to denote options. You may use white space in place of the equals sign to separate an option name…
NAME pamfunc – Apply a simple monadic arithmetic function to a Netpbm image SYNOPSIS pamfunc { -multiplier=realnum | -divisor=realnum | -adder=integer | -subtractor=integer | -min=wholenum | -max=wholenum -andmask=hexmask -ormask=hexmask -xormask=hexmask -not -shiftleft=count -shiftright=count } [filespec] All options can be abbreviated to their shortest unique prefix. You may use two hyphens instead of one. You may…
NAME pamflip – flip or rotate a PAM or PNM image SYNOPSIS pamflip { -leftright | -lr | -topbottom | -tb | -transpose | -xy | -rotate90 | -r90 | -cw | -rotate270 | -r270 | -ccw | -rotate180 | -r180 -null | -xform=xform1,xform2… } [-memsize=mebibytes] [-pagesize=bytes] [pamfile] All options can be abbreviated to their…
NAME pamfixtrunc – repair a Netpbm image whose file is truncated SYNOPSIS pamfixtrunc [-verbose] [netpbmfile] DESCRIPTION This program is part of Netpbm(1) pamfixtrunc reads as much as it can of a Netpbm image that may be truncated (i.e. the file may not contain the last part of the image) and writes out a valid Netpbm…
NAME pamfix – repair a Netpbm image with various corruptions SYNOPSIS pamfix [-verbose] [netpbmfile] DESCRIPTION This program is part of Netpbm(1) pamfix reads a stream that is mostly a Netpbm image but may have certain types of corruptions and produces a valid Netpbm image that preserves much of the information in the original. In particular,…
NAME pamfile – describe a Netpbm (PAM or PNM) file SYNOPSIS pamfile [-allimages] [file …] DESCRIPTION Reads one or more Netpbm files as input. Writes out short descriptions of the image type, size, etc. This is mostly for use in shell scripts, so the format is not particularly pretty. OPTIONS -allimages Describe every image in…
NAME pamexec – Execute a shell command on each image in a Netpbm image stream SYNOPSIS pamexec [‘command‘] [netpbmfile] [-check] Minimum unique abbreviation of option is acceptable. You may use double hyphens instead of single hyphen to denote options. You may use white space in place of the equals sign to separate an option name…
NAME pamenlarge – Enlarge a Netpbm image N times SYNOPSIS pamenlarge N [pnmfile] DESCRIPTION This program is part of Netpbm(1) pamenlarge reads a Netpbm image as input, replicates its pixels N times, and produces a Netpbm image as output. The output is the same type of image as the input. If you enlarge by a…
NAME pamendian – reverse endianness of a Netpbm image SYNOPSIS pamendian DESCRIPTION This program is part of Netpbm(1) All Netpbm formats that have samples in pure binary format with multiple bytes are defined to have them in big endian (most significant byte first) order. However, there exist variations on these formats, primarily developed before official…
NAME pamedge – edge-detect an image SYNOPSIS pamedge [imagefile] DESCRIPTION This program is part of Netpbm(1) pamedge reads a Netpbm image (PNM or PAM) and produces an image that outlines the edges. The output image is of the same type as the input, except that the maxval of the output is at least 255 and…
NAME pamditherbw – dither grayscale image to black and white SYNOPSIS pamditherbw [-floyd | -fs | -atkinson | -threshold | -hilbert | -dither8 | -d8 | -cluster3 | -c3 | -cluster4 | -c4 | -cluster8 | -c8] [-value val] [-clump size] [-randomseed=integer] [pamfile] All options can be abbreviated to their shortest unique prefix. DESCRIPTION This…
NAME pamdice – slice a Netpbm image into many horizontally and/or vertically SYNOPSIS pamslice -outstem=filenamestem [-width=width] [-height=height] [-verbose] [filename] You can use the minimum unique abbreviation of the options. You can use two hyphens instead of one. You can separate an option name from its value with white space instead of an equals sign. DESCRIPTION…
NAME pamdepth – change the maxval in a Netpbm image SYNOPSIS pamdepth newmaxval [netpbmfile] DESCRIPTION This program is part of Netpbm(1) pamdepth reads a Netpbm image as input, scales all the pixel values, and writes out the image with the new maxval. Scaling the colors down to a smaller maxval will result in some loss…
NAME pamdeinterlace – remove ever other row from a PAM/PNM image SYNOPSIS pamdeinterlace [-takeodd] [-takeeven] N [infile] You can use the minimum unique abbreviation of the options. You can use two hyphens instead of one. You can separate an option name from its value with white space instead of an equals sign. DESCRIPTION pamdeinterlace Removes…
NAME pamcut – cut a rectangle out of a PAM, PBM, PGM, or PPM image SYNOPSIS pamcut [-left leftcol] [-right rightcol] [-top toprow] [-bottom bottomrow] [-width width] [-height height] [-pad] [-verbose] [ left right width height ] [pnmfile] All options may be abbreviated to the shortest unique prefix. DESCRIPTION Reads a PAM, PBM, PGM, or…
NAME pamcomp – composite (overlay) two Netpbm images together SYNOPSIS pamcomp [-align={left|center|right| beyondleft|beyondright}] [-valign={top|middle|bottom| above|below}] [-xoff=X] [-yoff=Y] [-alpha=alpha-pgmfile] [-invert] [-opacity=opacity] [-mixtransparency] [-linear] overlay_file [underlying_file [output_file]] Minimum unique abbreviation of option is acceptable. You may use double hyphens instead of single hyphen to denote options. You may use white space in place of the equals sign…
NAME pamchannel – extract channels from a PAM image SYNOPSIS pamchannel [-infile infile] [-tupletype tupletype] [channum …] Minimum unique abbreviation of option is acceptable. You may use double hyphens instead of single hyphen to denote options. You may use white space in place of the equals sign to separate an option name from its value….