raw2tiff(1)

RAW2TIFF(1)              USER COMMANDS                RAW2TIFF(1)

NAME

     raw2tiff - create a TIFF file from a raw data

SYNOPSIS

     raw2tiff [ options ] input.raw output.tif

DESCRIPTION

     raw2tiff converts a raw byte sequence into TIFF. By default,
     the  TIFF image is created with data samples packed (Planar-
     Configuration=1), compressed  with  the  PackBits  algorithm
     (Compression=32773),  and  with  each  strip  no more than 8
     kilobytes.  These characteristics can overridden, or  expli-
     citly specified with the options described below.

OPTIONS

     -H <number>
          size  of  input  image  file  header  in  bytes  (0  by
          default). This amount of data just will be skipped from
          the start of file while reading.

     -w <number>
          width of input image in pixels  (can  be  guessed,  see
          GUESSING THE IMAGE GEOMETRY below).

     -l <number>
          length of input image  in  lines(can  be  guessed,  see
          GUESSING THE IMAGE GEOMETRY below).

     -b <number>
          number of bands in input image (1 by default).

     -d data_type
          type of samples in input image, where data_type may be:
          byte       8-bit unsigned integer (default),
          short      16-bit unsigned integer,
          long       32-bit unsigned integer,
          sbyte      8-bit signed integer,
          sshort     16-bit signed integer,
          slong      32-bit signed integer,
          float      32-bit IEEE floating point,
          double     64-bit IEEE floating point,

     -i config
          type of samples interleaving in input image, where con-
          fig may be:
          pixel      pixel interleaved data (default),
          band       band interleaved data.

     -p photo
          photometric interpretation (color space) of  the  input
          image, where photo may be:
          miniswhite white color represented with 0 value,

                 Last change: 15 September, 2002                1

RAW2TIFF(1)              USER COMMANDS                RAW2TIFF(1)

          minisblack  black  color  represented  with   0   value
          (default),
          rgb        image has RGB color model,
          cmyk       image has CMYK (separated) color model,
          ycbcr           image has YCbCr color model,
          cielab     image has CIE L*a*b color model,
          icclab     image has ICC L*a*b color model,
          itulab     image has ITU L*a*b color model,

     -s   swap bytes fetched from the input file.

     -L   input data has LSB2MSB bit order (default).

     -M   input data has MSB2LSB bit order.

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

     -r <number>
          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.

GUESSING THE IMAGE GEOMETRY

     raw2tiff can guess image width and height  in  case  one  or
     both  of these parameters are not specified. If you omit one
     of those parameters, the complementary one  will  be  calcu-
     lated  based  on  the  file size (taking into account header
     size, number of bands and  data  type).  If  you  omit  both
     parameters,  the  statistical approach will be used. Utility
     will compute correlation coefficient between  two  lines  at
     the  image  center  using several appropriate line sizes and
     the highest absolute value of the coefficient will  indicate
     the right line size. That is why you should be cautious with
     the very large images, because guessing process may  take  a
     while  (depending on your system perfomance). Of course, the
     utility can't guess the header size,  number  of  bands  and
     data  type, so it should be specified manually. If you don't
     know anything about your image, just try  with  the  several
     combinations  of  those  options.   There is no magic, it is
     just a mathematical statistics, so it can be wrong  in  some
     cases.  But  for  most  ordinary images guessing method will
     work fine.

SEE ALSO

     pal2rgb(1),  tiffinfo(1),  tiffcp(1),  tiffmedian(1),   lib-
     tiff(3)

                 Last change: 15 September, 2002                2