Section 1: user commands and tools
NAME ppmntsc – make a portable pixmap look like taken from an American TV SYNOPSIS ppmntsc [ –pal ] [ –legalonly ] [ –illegalonly ] [ –correctedonly ] [ –verbose ] [ –debug ] [ infile ] Minimum unique abbreviations of options are acceptable. DESCRIPTION This program makes colors legal in the NTSC (or PAL)…
NAME pnmnorm – normalize the contrast in a Netbpm image SYNOPSIS pnmnorm [-bpercent N | -bvalue N] [-wpercent N | -wvalue N] [-keephues] [-brightmax] [ppmfile] All options can be abbreviated to their shortest unique prefix. You may use two hyphens instead of one to designate an option. You may use either white space or an…
NAME ppmmix – blend together two portable pixmaps SYNOPSIS ppmmix fadefactor ppmfile1 ppmfile2 DESCRIPTION Reads two portable pixmaps as input. Mixes them together using the specified fade factor. The fade factor may be in the range from 0.0 (only ppmfile1’s image data) to 1.0 (only ppmfile2’s image data). Anything in between gains a smooth blend…
NAME ppmmake – create a pixmap of a specified size and color SYNOPSIS ppmmake color width height DESCRIPTION Produces a portable pixmap of the specified color, width, and height. The color can be specified in five ways: o A name, assuming that a pointer to an X11-style color names file was compiled in. o An…
NAME ppmlabel – add text to a portable pixmap SYNOPSIS ppmlabel [-angle angle] [-background transparent | colour] [-colour colour] [-file filename] [-size textsize] [-text ‘text string’] [-x column] [-y row] … [ppmfile] DESCRIPTION ppmlabel uses the text drawing facilities of ppmdraw to add text to a portable pixmap. The location, size, baseline angle, colour of…
NAME ppmhist – print a histogram of a portable pixmap SYNOPSIS ppmhist [-hexcolor] [-noheader] [-map] [-nomap] [-sort={frequency,rgb}] [ppmfile] DESCRIPTION Reads a PPM image as input. Generates a histogram of the colors in the image, i.e. a list of all the colors and how many pixels of each color are in the image. OPTIONS -sort={frequency,rgb} The…
NAME ppmglobe – generate strips to glue onto a sphere SYNOPSIS ppmglobe [-background=colorname] [-closeok] stripcount [filename] 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. DESCRIPTION…
NAME ppmforge – fractal forgeries of clouds, planets, and starry skies SYNOPSIS ppmforge [-clouds] [-night] [-dimension dimen] [-hour hour] [-inclination|-tilt angle] [-mesh size] [-power factor] [-glaciers level] [-ice level] [-saturation sat] [-seed seed] [-stars fraction] [-xsize|-width width] [-ysize|-height height] DESCRIPTION ppmforge generates three kinds of “random fractal forgeries,” the term coined by Richard F. Voss…
NAME ppmflash – brighten a picture up to complete white-out SYNOPSIS ppmflash flashfactor [ppmfile] DESCRIPTION Reads a portable pixmap as input. Increases its brightness by the specified flashfactor up to a total white-out image. The flashfactor may be in the range from 0.0 (original picture’s brightness) to 1.0 (full white-out, The Second After). As pnmgamma…
NAME ppmfade – generate a transition between two image files using special effects. SYNOPSIS ppmfade [ -f first.ppm ] [ -l last.ppm ] [ -mix|-spread|-shift|-relief|-oil|-edge|-bentley|-block ] [ -base name ] DESCRIPTION This program generates a transition between either two input images or between one input image and black. You can use the 30 intermediate images…
NAME ppmdraw – draw lines, text, etc on a PPM image SYNOPSIS ppmdraw { -script=script | -scriptfile=filename } [-verbose] [ppmfile] All options can be abbreviated to their shortest unique prefix. You may use two hyphens instead of one to designate an option. You may use either white space or an equals sign between an option…
NAME ppmdmkfont – Create Ppmdfont ‘standard’. SYNOPSIS ppmdmkfont DESCRIPTION This program is part of Netpbm(1) ppmdmkfont creates the ‘standard’ Ppmdfont font as a Ppmdfont file. It has no input; it always generates identical files. (There are no arguments or options) This program is useful mainly as an example for creating other fonts. libnetpbm has the…
NAME ppmdither – ordered dither for color images SYNOPSIS ppmdither [-dim power] [-red shades] [-green shades] [-blue shades] [ppmfile] DESCRIPTION Reads a portable pixmap as input, and applies dithering to it to reduce the number of colors used down to the specified number of shades for each primary. The default number of shades is red=5,…
NAME ppmdist – simplistic grayscale assignment for machine generated, color images SYNOPSIS ppmdist [-intensity|-frequency] [ppmfile] DESCRIPTION Reads a portable pixmap as input, performs a simplistic grayscale assignment intended for use with grayscale or bitmap printers. Often conversion from ppm to pgm will yield an image with contrast too low for good printer output. The program…
NAME ppmdim – dim a portable pixmap down to total blackness SYNOPSIS ppmdim dimfactor [ppmfile] DESCRIPTION Reads a portable pixmap as input. Diminishes its brightness by the specified dimfactor down to total blackness. The dimfactor may be in the range from 0.0 (total blackness, deep night, nada, null, nothing) to 1.0 (original picture’s brightness). As…
NAME ppmddumpfont – dump a Ppmdfont file SYNOPSIS ppmddumpfont DESCRIPTION This program is part of Netpbm(1) ppmddumpfont reads a Ppmdfont file on Standard Input and writes to Standard Error a human readable description of the font. (There are no arguments or options) See LibnetpbmPPMDrawingFunction Manual (1) for details on Ppmdfont files. SEE ALSO ppmdraw(1) ,…
NAME ppmdcfont – Turn a Ppmdfont file into C source for a builtin font SYNOPSIS ppmdcfont DESCRIPTION This program is part of Netpbm(1) (There are no arguments or options) ppmdcfont creates a C source file that you can compile into a built-in font for use with the Netpbm PPM drawing facilities. It reads a Ppmdfont…
NAME ppmcolors – generate a color map of all colors of a certain maxval SYNOPSIS ppmcolors [-maxval=maxval] All options can be abbreviated to their shortest unique prefix. You may use two hyphens instead of one to designate an option. You may use either white space or an equals sign between an option name and its…
NAME ppmcolormask – produce mask of areas of a certain color in a PPM file SYNOPSIS ppmcolormask color [ppmfile] DESCRIPTION Reads a PPM file as input. Produces a PBM (bitmap) file as output. The output file is the same dimensions as the input file and is black in all places where the input file is…
NAME ppmcie – draw a CIE color chart as a PPM image SYNOPSIS ppmcie [-rec709|-cie|-ebu|-hdtv|-ntsc|-smpte] [-xy|-upvp] [-red rx ry] [-green gx gy] [-blue bx by] [-white wx wy] [-size edge] [-xsize|-width width] [-ysize|-height height] [-noblack] [-nowpoint] [-nolabel] [-noaxes] [-full] All options can be abbreviated to their shortest unique prefix. DESCRIPTION ppmcie creates a PPM file…