ppmshadow – add simulated shadows to a portable pixmap image Synopsisppmshadow [-b blur_size] [-k] [-t] [-x xoffset] [-y yoffset] [-u] [pnmfile] Descriptionppmshadow adds a simulated shadow to an image, giving the appearance that the contents of the image float above the page, casting a diffuse shadow on the background. Shadows can either be black, as…
ppmrough – create PPM image of two colors with a ragged border between them Synopsisppmrough [-left pixels] [-right pixels] [-top pixels] [-bottom pixels] [-width pixels] [-height pixels] [-bg rgb:##/##/##] [-fg rgb:##/##/##] [-var pixels] [-randomseed seed] [-verbose] All options can be abbreviated to their shortest unique prefix. You may use two hyphens instead of one. You…
ppmrelief – run a Laplacian relief filter on a portable pixmap Synopsisppmrelief [ppmfile] DescriptionReads a portable pixmap as input. Does a Laplacian relief filter, and writes a portable pixmap as output. The Laplacian relief filter is described in "Beyond Photography" by Holzmann, equation 3.19. It’s a sort of edge-detection. See Alsopgmbentley(1), pgmoil(1), ppm(5) AuthorCopyright (C)…
ppmrainbow – Generate a rainbow Synopsisppmrainbow [-width=number] [-height=number] [-tmpdir=directory] [-verbose] color … 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 equals signs between an option name and its value. Descriptionppmrainbow generates a PPM image…
ppmqvga – 8 plane quantization Synopsisppmqvga [ options ] [ input file ] Descriptionppmqvga quantizes PPM files to 8 planes, with optional Floyd-Steinberg dithering. Input is a PPM file from the file named, or standard input of no file is provided. Options-d dither. Apply Floyd-Steinberg dithering to the data -q quiet. Produces no progress reporting,…
ppmquantall – run ppmquant on a bunch of files all at once, so they share a common colormap Synopsisppmquantall [-ext extension] ncolors ppmfile … DescriptionTakes a bunch of portable pixmap as input. Chooses ncolors colors to best represent all of the images, maps the existing colors to the new ones, and overwrites the input files…
ppmquant – quantize the colors in a portable pixmap down to a specified number Synopsisppmquant [-floyd|-fs] ncolors [ppmfile] ppmquant [-floyd|-fs] [-nofloyd|-nofs] -mapfile mapfile [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 equals signs…
ppmpat – make a pretty pixmap Synopsisppmpat -gingham2|-g2|-gingham3| -g3|-madras|-tartan| -poles|-squig|-camo| -anticamo width height DescriptionProduces a portable pixmap of the specified width and height, with a pattern in it. This program is mainly to demonstrate use of the ppmdraw routines, a simple but powerful drawing library. See the ppmdraw.h include file for more info on using…
ppmntsc – make a portable pixmap look like taken from an American TV Synopsisppmntsc [ –pal ] [ –legalonly ] [ –illegalonly ] [ –correctedonly ] [ –verbose ] [ –debug ] [ infile ] Minimum unique abbreviations of options are acceptable. DescriptionThis program makes colors legal in the NTSC (or PAL) color systems. Often,…
pnmnorm – normalize the contrast in a Netbpm image Synopsispnmnorm [-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 equals sign…
ppmmix – blend together two portable pixmaps Synopsisppmmix fadefactor ppmfile1 ppmfile2 DescriptionReads 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 between the two…
ppmmake – create a pixmap of a specified size and color Synopsisppmmake color width height DescriptionProduces 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 X11-style hexadecimal specifier:…
ppmlabel – add text to a portable pixmap Synopsisppmlabel [-angle angle] [-background transparent | colour] [-colour colour] [-file filename] [-size textsize] [-text ‘text string’] [-x column] [-y row] … [ppmfile] Descriptionppmlabel uses the text drawing facilities of ppmdraw to add text to a portable pixmap. The location, size, baseline angle, colour of the text and…
ppmhist – print a histogram of a portable pixmap Synopsisppmhist [-hexcolor] [-noheader] [-map] [-nomap] [-sort={frequency,rgb}] [ppmfile] DescriptionReads 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 -sort option determines the…
ppmglobe – generate strips to glue onto a sphere Synopsisppmglobe [-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. DescriptionThis program is…
ppmforge – fractal forgeries of clouds, planets, and starry skies Synopsisppmforge [-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] Descriptionppmforge generates three kinds of “random fractal forgeries,” the term coined by Richard F. Voss of the IBM…
ppmflash – brighten a picture up to complete white-out Synopsisppmflash flashfactor [ppmfile] DescriptionReads 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 does not do…
ppmfade – generate a transition between two image files using special effects. Synopsisppmfade [ -f first.ppm ] [ -l last.ppm ] [ -mix|-spread|-shift|-relief|-oil|-edge|-bentley|-block ] [ -base name ] DescriptionThis program generates a transition between either two input images or between one input image and black. You can use the 30 intermediate images generated to show…
ppmdraw – draw lines, text, etc on a PPM image Synopsisppmdraw { -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 and…
ppmdmkfont – Create Ppmdfont ‘standard’. Synopsisppmdmkfont DescriptionThis 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 ‘standard’ font built…