tiffcmp(1)

TIFFCMP(1)               USER COMMANDS                 TIFFCMP(1)

NAME

     tiffcmp - compare two TIFF files

SYNOPSIS

     tiffcmp [ options ] file1.tif file2.tif

DESCRIPTION

     Tiffcmp compares the tags and  data  in  two  files  created
     according  to  the  Tagged  Image File Format, Revision 6.0.
     The schemes used for compressing data in each file are imma-
     terial  when  data  are  compared-data  are  compared  on  a
     scanline-by-scanline basis after decompression.  Most direc-
     tory  tags are checked; notable exceptions are:  GrayRespon-
     seCurve, ColorResponseCurve, and ColorMap tags.   Data  will
     not  be  compared  if  any of the BitsPerSample, SamplesPer-
     Pixel, or ImageWidth values  are  not  equal.   By  default,
     tiffcmp will terminate if it encounters any difference.

OPTIONS

     -l   List each byte of image data that differs  between  the
          files.

     -z number
          List specified number of image data bytes that  differs
          between the files.

     -t   Ignore any differences in directory tags.

BUGS

     Tags that are not recognized by the  library  are  not  com-
     pared; they may also generate spurious diagnostics.

     The image data of tiled files is  not  compared,  since  the
     TIFFReadScanline()  function  is  used.   A  error  will  be
     reported for tiled files.

     The pixel and/or sample number reported in  differences  may
     be off in some exotic cases.

SEE ALSO

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

                 Last change: September 26, 1994                1