XnView 1.98.5 writes duplicate TIFF Tags (Software)

[Webster8347]

Hi Pierre, this seems to be a little bug: When you open a TIF image in XnView and save it again, XnView creates a duplicate TIFF Tag which leads to errors in other programms, like OCR or Barcode recognition tools.

Old, correct TIFF tags (here a TIFF saved with IrganView first):

• ImageWidth (1 Short): 2480
  ImageLength (1 Short): 3481
  BitsPerSample (1 Short): 1
  Compression (1 Short): Group 4 Fax (aka CCITT FAX4)
  Photometric (1 Short): MinIsWhite
  FillOrder (1 Short): Msb2Lsb
  StripOffsets (1 Long): 8
  Orientation (1 Short): TopLeft
  SamplesPerPixel (1 Short): 1
  RowsPerStrip (1 Short): 3481
  StripByteCounts (1 Long): 2807
  XResolution (1 Rational): 300
  YResolution (1 Rational): 300
  PlanarConfig (1 Short): Contig
  ResolutionUnit (1 Short): Inch
  Software (10 ASCII): IrfanView

And here the TIFF tags of the same image saved with XnView with the duplicate "Software" tag...

• ImageWidth (1 Long): 2480
  ImageLength (1 Long): 3481
  BitsPerSample (1 Short): 1
  Compression (1 Short): Group 4 Fax (aka CCITT FAX4)
  Photometric (1 Short): MinIsWhite
  StripOffsets (134 Long): 1324, 1332, 1340, 1348, 1356, 1364, 1372,...
  SamplesPerPixel (1 Short): 1
  RowsPerStrip (1 Long): 26
  StripByteCounts (134 Long): 7, 7, 7, 7, 7, 7, 7, 108, 221, 208, 210,...
  XResolution (1 Rational): 300
  YResolution (1 Rational): 300
  PlanarConfig (1 Short): Contig
  ResolutionUnit (1 Short): Inch
  Software (10 ASCII): IrfanView
  Software (32 ASCII): LIBFORMAT (c) Pierre-e Gougelet

Cheers,
Beat

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BTW: I love XnView! Best image viewer ever!

[xnview]

yes right