src/tiff/man/tiffcmp.1

   1 .\"
   2 .\" Copyright (c) 1988-1997 Sam Leffler
   3 .\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
   4 .\"
   5 .\" Permission to use, copy, modify, distribute, and sell this software and
   6 .\" its documentation for any purpose is hereby granted without fee, provided
   7 .\" that (i) the above copyright notices and this permission notice appear in
   8 .\" all copies of the software and related documentation, and (ii) the names of
   9 .\" Sam Leffler and Silicon Graphics may not be used in any advertising or
  10 .\" publicity relating to the software without the specific, prior written
  11 .\" permission of Sam Leffler and Silicon Graphics.
  12 .\"
  13 .\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
  14 .\" EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  15 .\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  16 .\"
  17 .\" IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
  18 .\" ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
  19 .\" OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  20 .\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  21 .\" LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  22 .\" OF THIS SOFTWARE.
  23 .\"
  24 .if n .po 0
  25 .TH TIFFCMP 1 "November 2, 2005" "libtiff"
  26 .SH NAME
  27 tiffcmp \- compare two
  28 .SM TIFF
  29 files
  30 .SH SYNOPSIS
  31 .B tiffcmp
  32 [
  33 .I options
  34 ]
  35 .I "file1.tif file2.tif"
  36 .SH DESCRIPTION
  37 .I Tiffcmp
  38 compares the tags and data in two files created according
  39 to the Tagged Image File Format, Revision 6.0.
  40 The schemes used for compressing data in each file
  41 are immaterial when data are compared\-data are compared on
  42 a scanline-by-scanline basis after decompression.
  43 Most directory tags are checked; notable exceptions are:
  44 .IR GrayResponseCurve ,
  45 .IR ColorResponseCurve ,
  46 and
  47 .IR ColorMap
  48 tags.
  49 Data will not be compared if any of the
  50 .IR BitsPerSample ,
  51 .IR SamplesPerPixel ,
  52 or
  53 .I ImageWidth
  54 values are not equal.
  55 By default,
  56 .I tiffcmp
  57 will terminate if it encounters any difference.
  58 .SH OPTIONS
  59 .TP
  60 .B \-l
  61 List each byte of image data that differs between the files.
  62 .TP
  63 .BI \-z " number"
  64 List specified number of image data bytes that differs between the files.
  65 .TP
  66 .B \-t
  67 Ignore any differences in directory tags.
  68 .SH BUGS
  69 Tags that are not recognized by the library are not
  70 compared; they may also generate spurious diagnostics.
  71 .PP
  72 The image data of tiled files is not compared, since the
  73 .I TIFFReadScanline()
  74 function is used.  An error will be reported for tiled files.
  75 .PP
  76 The pixel and/or sample number reported in differences may be off
  77 in some exotic cases.
  78 .SH "SEE ALSO"
  79 .BR pal2rgb (1),
  80 .BR tiffinfo (1),
  81 .BR tiffcp (1),
  82 .BR tiffmedian (1),
  83 .BR libtiff (3TIFF)
  84 .PP
  85 Libtiff library home page:
  86 .BR http://www.remotesensing.org/libtiff/