NAME

convert − perform colour and shading operations on run-length files

USAGE

convert −[rgbyhlLscCtTxXzZO13] infile outfile
To see the full range of options, type convert. 
    r g b : extract red, green, or blue
    y     : luminance
    h     : hue, full saturation
    l     : lightness, in grey scale
    L     : lightness, in same primaries extracted
    s     : saturation in grey scale
    c     : complementary image
    C     : complementary image - black fixed
    t     : two-tone: black stays black, remainder white
    T     : two-tone: black becomes white, remainder black
    x     : maximizes values
    X     : maximizes values, except 0’s
    z     : zeroes values
    Z     : zeroes values, except 255’s
    O     : preserves X and Y offsets within the file
    1     : for output 8 bits (1 byte) deep
    3     : for output 24 bits (3 bytes) deep
 
   default: ‘convert infile outfile’ = ‘convert -rgby3 infile outfile’
     ** Input file must be 24 bits deep **
Typically this program is used to produce 8-bit images for use as transparency and bump maps.  Complementing the colours, extracting certain features and producing un-antialiased matte files are also possible.

COMMENTS

Type convert to see the usage statement. Type convert -i to get the version number.  Old (unnumbered) versions will not be supported after this release. 

Version .1  —  December 29, 2021