Manual Pages for UNIX Operating System command usage for man tiff2rgba

User Commands                                        TIFF2RGBA(1)



NAME
     tiff2rgba - convert a TIFF image to RGBA color space

SYNOPSIS
     tiff2rgba [ options ] input.tif output.tif

DESCRIPTION
     Tiff2rgba converts a wide variety of  TIFF  images  into  an
     RGBA  TIFF  image.   This  includes the ability to translate
     different color spaces and photometric  interpretation  into
     RGBA,  support  for  alpha blending, and translation of many
     different bit depths into a 32bit RGBA image.

     Internally this program is implemented using the TIFFReadRG-
     BAImage()  function,  and it suffers any limitations of that
     image.  This includes limited support for > 8  BitsPerSample
     images,   and  flaws  with  some  esoteric  combinations  of
     BitsPerSample, photometric interpretation,  block  organiza-
     tion and planar configuration.

     The generated images are stripped images with  four  samples
     per  pixel (red, green, blue and alpha) or if the -n flag is
     used, three samples per pixel (red, green, and  blue).   The
     resulting images are always planar configuration contiguous.
     For this reason,  this  program  is  a  useful  utility  for
     transform exotic TIFF files into a form ingestible by almost
     any TIFF supporting software.

OPTIONS
     -c   Specify a compression scheme to use when writing  image
          data:   -c  none  for  no compression (the default), -c
          packbits for the PackBits compression algorithm, -c zip
          for  the Deflate compression algorithm, -c jpeg for the
          JPEG compression algorithm, and -c lzw for Lempel-Ziv &
          Welch.

     -r   Write data with a specified number of rows  per  strip;
          by default the number of rows/strip is selected so that
          each strip is approximately 8 kilobytes.

     -b   Process the image one  block  (strip/tile)  at  a  time
          instead  of  by  reading the whole image into memory at
          once.  This may be necessary for very large  images  on
          systems with limited RAM.

     -n   Drop the alpha component from the output file,  produc-
          ing  a  pure RGB file.  Currently this does not work if
          the -b flag is also in effect.

SEE ALSO
     tiff2bw(1), TIFFReadRGBAImage(3t), libtiff(3)




libtiff           Last change: November 2, 2005                 1






User Commands                                        TIFF2RGBA(1)



     Libtiff            library            home             page:
     http://www.remotesensing.org/libtiff/





















































libtiff           Last change: November 2, 2005                 2