RAW2TIFF(1)                                           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  (PlanarConfiguration=1), compressed with the Pack-
       Bits algorithm (Compression=32773), and with each strip no
       more than 8 kilobytes.  These characteristics can overrid-
       den, or explicitly specified with  the  options  described
       below.

OPTIONS
       -H 
              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 
              width of input image in pixels (can be guessed, see
              GUESSING THE IMAGE GEOMETRY below).

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

       -b 
              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
              config 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,
              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 algo-
              rithm, 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.

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
       calculated 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 perfor-
       mance).  Of  course,  the  utility  can't guess the header
       size, number of bands and data type, so it should be spec-
       ified  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), tiffcp(1), tiffmedian(1), libtiff(3)

       Libtiff    library   home   page:   http://www.remotesens-
       ing.org/libtiff/



libtiff                  November 2, 2005             RAW2TIFF(1)