pammasksharpen – Sharpen an image via an unsharp mask Synopsispammasksharpen [-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 -sigma=.7 -tupletype=GRAYSCALE…
pamlookup – map an image to a new image by using it as indices into a table Synopsispamlookup -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 of an…
Namepamgradient – create a four-corner gradient PAM image Synopsispamgradient [-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 its value….
pamgauss – create a two dimensional gaussian function as a PAM image Synopsispamgauss 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 from its…
pamfunc – Apply a simple monadic arithmetic function to a Netpbm image Synopsispamfunc { -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 separate an…
pamflip – flip or rotate a PAM or PNM image Synopsispamflip { -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 shortest unique…
pamfixtrunc – repair a Netpbm image whose file is truncated Synopsispamfixtrunc [-verbose] [netpbmfile] DescriptionThis 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 image that is…
pamfix – repair a Netpbm image with various corruptions Synopsispamfix [-verbose] [netpbmfile] DescriptionThis 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, Netpbm salvages streams…
pamfile – describe a Netpbm (PAM or PNM) file Synopsispamfile [-allimages] [file …] DescriptionReads 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 each input file. Without…
pamexec – Execute a shell command on each image in a Netpbm image stream Synopsispamexec [‘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 from its…
pamenlarge – Enlarge a Netpbm image N times Synopsispamenlarge N [pnmfile] DescriptionThis 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 factor of 3…
pamendian – reverse endianness of a Netpbm image Synopsispamendian DescriptionThis 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 multibyte Netpbm formats…
pamedge – edge-detect an image Synopsispamedge [imagefile] DescriptionThis 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 if the input…
pamditherbw – dither grayscale image to black and white Synopsispamditherbw [-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. DescriptionThis program is part…
pamdice – slice a Netpbm image into many horizontally and/or vertically Synopsispamslice -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. DescriptionReads a PAM,…
pamdepth – change the maxval in a Netpbm image Synopsispamdepth newmaxval [netpbmfile] DescriptionThis 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 of information. This…
pamdeinterlace – remove ever other row from a PAM/PNM image Synopsispamdeinterlace [-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. Descriptionpamdeinterlace Removes all the even-numbered…
pamcut – cut a rectangle out of a PAM, PBM, PGM, or PPM image Synopsispamcut [-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. DescriptionReads a PAM, PBM, PGM, or PPM image as…
pamcomp – composite (overlay) two Netpbm images together Synopsispamcomp [-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 to separate…
pamchannel – extract channels from a PAM image Synopsispamchannel [-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. DescriptionThis program…