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2019.01.12 17:25 "tiffcp altering image contents (in contrast to what the manual says)?", by <lists@binarus.de>
2019.01.12 19:09 "Re: tiffcp altering image contents (in contrast to what the manual says)?", by Bob Friesenhahn
2019.01.12 21:07 "Re: Tiff Digest, Vol 3, Issue 3", by Richard Nolde
2019.01.13 15:41 "Re: tiffcp altering image contents (in contrast to what the manual says)?", by <lists@binarus.de>
2019.01.13 19:24 "Re: tiffcp altering image contents (in contrast to what the manual says)?", by Bob Friesenhahn
2019.01.13 17:04 "Re: tiffcp altering image contents (in contrast to what the manual says)?", by <lists@binarus.de>
2019.01.13 18:31 "Re: tiffcp altering image contents (in contrast to what the manual says)?", by <lists@binarus.de>
2019.01.13 19:17 "Re: tiffcp altering image contents (in contrast to what the manual says)?", by Bob Friesenhahn
2019.01.13 21:58 "Re: tiffcp altering image contents (in contrast to what the manual says)?", by <lists@binarus.de>

2019.01.13 15:41 "Re: tiffcp altering image contents (in contrast to what the manual says)?", by <lists@binarus.de>

Dear Bob,

>> On Sat, 12 Jan 2019, Binarus wrote:
>>> I would be very grateful if somebody could shed some light onto this
>>> issue.
>> Are you able to supply 'tiffinfo' output for all of the input files 
>> and the output file?
>>
>> It may be that the JPEG has been re-encoded.

at first, thank you very much for caring about the problem, and please
excuse that your message has been rejected by our server. We are currently
investigating why this has happened although we have whitelisted
lists.osgeo.org (it seems that the list mail server, when connecting, does
not give us an ENVFROM of xxx@lists.osgeo.org as expected, but instead an
ENVFROM of <your email address>, which makes us scratch our heads ...).
Fortunately, we have got the list digest in the meantime; otherwise, we
would have missed your answer.

Anyhow, coming back to the subject:

I didn't want to clutter the actual message too much, so I have attached the
results of tiffinfo. 1.txt contains the output of tiffinfo 1.tif, 2.txt
contains the output of tiffinfo 2.tif, and so on. out.txt contains the
results of tiffinfo out.tif.

Thank you very much again,

Binarus


TIFF Directory at offset 0xe1b08 (924424)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 8
  Sample Format: unsigned integer
  Compression Scheme: JPEG
  Photometric Interpretation: YCbCr
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 16
  Planar Configuration: single image plane
  Page Number: 0-4
  Reference Black/White:
     0:     0   255
     1:   128   255
     2:   128   255
  DocumentName: ScanImage4240_out.tif
  Software: GIMP 2.10.6
  DateTime: 2019:01:12 17:04:19
  JPEG Tables: (574 bytes)
TIFF Directory at offset 0x31a36c (3253100)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 8
  Sample Format: unsigned integer
  Compression Scheme: JPEG
  Photometric Interpretation: YCbCr
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 16
  Planar Configuration: single image plane
  Page Number: 1-4
  Reference Black/White:
     0:     0   255
     1:   128   255
     2:   128   255
  DocumentName: ScanImage4240_out.tif
  Software: IrfanView
  JPEG Tables: (574 bytes)
TIFF Directory at offset 0x67d4b6 (6804662)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 8
  Sample Format: unsigned integer
  Compression Scheme: JPEG
  Photometric Interpretation: YCbCr
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 16
  Planar Configuration: single image plane
  Page Number: 2-4
  Reference Black/White:
     0:     0   255
     1:   128   255
     2:   128   255
  DocumentName: ScanImage4240_out.tif
  Software: IrfanView
  JPEG Tables: (574 bytes)
TIFF Directory at offset 0x7bf266 (8122982)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 8
  Sample Format: unsigned integer
  Compression Scheme: JPEG
  Photometric Interpretation: YCbCr
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 16
  Planar Configuration: single image plane
  Page Number: 3-4
  Reference Black/White:
     0:     0   255
     1:   128   255
     2:   128   255
  DocumentName: ScanImage4240_out.tif
  Software: GIMP 2.10.6
  DateTime: 2019:01:12 17:04:18
  JPEG Tables: (574 bytes)


TIFF Directory at offset 0x1da3a (121402)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 1
  Sample Format: unsigned integer
  Compression Scheme: AdobeDeflate
  Photometric Interpretation: min-is-white
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 1
  Rows/Strip: 102
  Planar Configuration: single image plane
  Page Number: 0-4
  DocumentName: ScanImage4257_out.tif
  Software: IrfanView
TIFF Directory at offset 0x34c24 (216100)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 1
  Sample Format: unsigned integer
  Compression Scheme: AdobeDeflate
  Photometric Interpretation: min-is-white
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 1
  Rows/Strip: 102
  Planar Configuration: single image plane
  Page Number: 1-4
  DocumentName: ScanImage4257_out.tif
  Software: IrfanView
TIFF Directory at offset 0x466f0 (288496)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 1
  Sample Format: unsigned integer
  Compression Scheme: AdobeDeflate
  Photometric Interpretation: min-is-white
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 1
  Rows/Strip: 102
  Planar Configuration: single image plane
  Page Number: 2-4
  DocumentName: ScanImage4257_out.tif
  Software: IrfanView
TIFF Directory at offset 0x4e6a6 (321190)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 1
  Sample Format: unsigned integer
  Compression Scheme: AdobeDeflate
  Photometric Interpretation: min-is-white
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 1
  Rows/Strip: 102
  Planar Configuration: single image plane
  Page Number: 3-4
  DocumentName: ScanImage4257_out.tif
  Software: IrfanView


TIFF Directory at offset 0x14e6d2 (1369810)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 8
  Sample Format: unsigned integer
  Compression Scheme: JPEG
  Photometric Interpretation: YCbCr
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 16
  Planar Configuration: single image plane
  Page Number: 0-8
  Reference Black/White:
     0:     0   255
     1:   128   255
     2:   128   255
  DocumentName: ScanImage4265_out.tif
  Software: GIMP 2.10.6
  DateTime: 2019:01:12 17:14:18
  JPEG Tables: (574 bytes)
TIFF Directory at offset 0x336258 (3367512)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 8
  Sample Format: unsigned integer
  Compression Scheme: JPEG
  Photometric Interpretation: YCbCr
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 16
  Planar Configuration: single image plane
  Page Number: 1-8
  Reference Black/White:
     0:     0   255
     1:   128   255
     2:   128   255
  DocumentName: ScanImage4265_out.tif
  Software: GIMP 2.10.6
  DateTime: 2019:01:12 17:14:19
  JPEG Tables: (574 bytes)
TIFF Directory at offset 0x5be8ac (6023340)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 8
  Sample Format: unsigned integer
  Compression Scheme: JPEG
  Photometric Interpretation: YCbCr
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 16
  Planar Configuration: single image plane
  Page Number: 2-8
  Reference Black/White:
     0:     0   255
     1:   128   255
     2:   128   255
  DocumentName: ScanImage4265_out.tif
  Software: GIMP 2.10.6
  DateTime: 2019:01:12 17:14:11
  JPEG Tables: (574 bytes)
TIFF Directory at offset 0x763ce4 (7748836)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 8
  Sample Format: unsigned integer
  Compression Scheme: JPEG
  Photometric Interpretation: YCbCr
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 16
  Planar Configuration: single image plane
  Page Number: 3-8
  Reference Black/White:
     0:     0   255
     1:   128   255
     2:   128   255
  DocumentName: ScanImage4265_out.tif
  Software: GIMP 2.10.6
  DateTime: 2019:01:12 17:14:12
  JPEG Tables: (574 bytes)
TIFF Directory at offset 0x8f7dd8 (9403864)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 8
  Sample Format: unsigned integer
  Compression Scheme: JPEG
  Photometric Interpretation: YCbCr
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 16
  Planar Configuration: single image plane
  Page Number: 4-8
  Reference Black/White:
     0:     0   255
     1:   128   255
     2:   128   255
  DocumentName: ScanImage4265_out.tif
  Software: GIMP 2.10.6
  DateTime: 2019:01:12 17:14:09
  JPEG Tables: (574 bytes)
TIFF Directory at offset 0xa94c68 (11095144)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 8
  Sample Format: unsigned integer
  Compression Scheme: JPEG
  Photometric Interpretation: YCbCr
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 16
  Planar Configuration: single image plane
  Page Number: 5-8
  Reference Black/White:
     0:     0   255
     1:   128   255
     2:   128   255
  DocumentName: ScanImage4265_out.tif
  Software: GIMP 2.10.6
  DateTime: 2019:01:12 17:14:14
  JPEG Tables: (574 bytes)
TIFF Directory at offset 0xc186fe (12683006)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 8
  Sample Format: unsigned integer
  Compression Scheme: JPEG
  Photometric Interpretation: YCbCr
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 16
  Planar Configuration: single image plane
  Page Number: 6-8
  Reference Black/White:
     0:     0   255
     1:   128   255
     2:   128   255
  DocumentName: ScanImage4265_out.tif
  Software: GIMP 2.10.6
  DateTime: 2019:01:12 17:14:10
  JPEG Tables: (574 bytes)
TIFF Directory at offset 0xdf093c (14616892)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 8
  Sample Format: unsigned integer
  Compression Scheme: JPEG
  Photometric Interpretation: YCbCr
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 16
  Planar Configuration: single image plane
  Page Number: 7-8
  Reference Black/White:
     0:     0   255
     1:   128   255
     2:   128   255
  DocumentName: ScanImage4265_out.tif
  Software: GIMP 2.10.6
  DateTime: 2019:01:12 17:14:17
  JPEG Tables: (574 bytes)


TIFF Directory at offset 0x1a0e4 (106724)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 1
  Sample Format: unsigned integer
  Compression Scheme: AdobeDeflate
  Photometric Interpretation: min-is-white
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 1
  Rows/Strip: 102
  Planar Configuration: single image plane
  Page Number: 0-2
  DocumentName: ScanImage4273_out.tif
  Software: IrfanView
TIFF Directory at offset 0x1f6b6 (128694)
  Subfile Type: multi-page document (2 = 0x2)
  Image Width: 2552 Image Length: 3508
  Resolution: 300, 300 pixels/inch
  Bits/Sample: 1
  Sample Format: unsigned integer
  Compression Scheme: AdobeDeflate
  Photometric Interpretation: min-is-white
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 1
  Rows/Strip: 102
  Planar Configuration: single image plane
  Page Number: 1-2
  DocumentName: ScanImage4273_out.tif
  Software: IrfanView