src/tiff/man/tiffcmp.1

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  25 .if n .po 0
  26 .TH TIFFCMP 1 "November 2, 2005" "libtiff"
  27 .SH NAME
  28 tiffcmp \- compare two
  29 .SM TIFF
  30 files
  31 .SH SYNOPSIS
  32 .B tiffcmp
  33 [
  34 .I options
  35 ]
  36 .I "file1.tif file2.tif"
  37 .SH DESCRIPTION
  38 .I Tiffcmp
  39 compares the tags and data in two files created according
  40 to the Tagged Image File Format, Revision 6.0.
  41 The schemes used for compressing data in each file
  42 are immaterial when data are compared\-data are compared on
  43 a scanline-by-scanline basis after decompression.
  44 Most directory tags are checked; notable exceptions are:
  45 .IR GrayResponseCurve ,
  46 .IR ColorResponseCurve ,
  47 and
  48 .IR ColorMap
  49 tags.
  50 Data will not be compared if any of the
  51 .IR BitsPerSample ,
  52 .IR SamplesPerPixel ,
  53 or
  54 .I ImageWidth
  55 values are not equal.
  56 By default,
  57 .I tiffcmp
  58 will terminate if it encounters any difference.
  59 .SH OPTIONS
  60 .TP
  61 .B \-l
  62 List each byte of image data that differs between the files.
  63 .TP
  64 .BI \-z " number"
  65 List specified number of image data bytes that differs between the files.
  66 .TP
  67 .B \-t
  68 Ignore any differences in directory tags.
  69 .SH BUGS
  70 Tags that are not recognized by the library are not
  71 compared; they may also generate spurious diagnostics.
  72 .PP
  73 The image data of tiled files is not compared, since the
  74 .I TIFFReadScanline()
  75 function is used.  An error will be reported for tiled files.
  76 .PP
  77 The pixel and/or sample number reported in differences may be off
  78 in some exotic cases.
  79 .SH "SEE ALSO"
  80 .BR pal2rgb (1),
  81 .BR tiffinfo (1),
  82 .BR tiffcp (1),
  83 .BR tiffmedian (1),
  84 .BR libtiff (3TIFF)
  85 .PP
  86 Libtiff library home page:
  87 .BR http://www.remotesensing.org/libtiff/