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Message #08157
[Bug 2111856] [NEW] Issue with 16-bit TIFF from Adobe Lightroom
Public bug reported:
When I export raw images as 126.bit TIFF in Adobe Lightroom 5, Hugin
outputs a warning like this when creating control points:
Warning: TIFFDecoder: no TIFFTAG_SAMPLEFORMAT or TIFFTAG_DATATYPE,
guessing pixeltype 'UINT16'.
Exiftools finds out this from the images (extract):
Bits Per Sample : 16 16 16
Photometric Interpretation : RGB
Samples Per Pixel : 3
Rows Per Strip : 16
Later when Hugin assembles the panorama, there's another warning:
enblend: warning: deduced output pixel type is "UINT16", but image type "JPEG"
enblend: warning: supports "UINT8" at best; will use "UINT8"
(I consider JPEG to be good enough for the final panorama, and you can't
really compare 8-bit RGB with 8-bit YCbCr, can you?)
In essence: The messages seem to suggest that 16-bit images for input
aren't fully supported.
System info (partially redacted):
Betriebssystem: Windows 10 (build 19045), 64-bit edition
Architektur: 64 bit
Freier Speicher: 7495296 kiB
Aktive Codepage: 1252 (Western European Windows)
Hugin
Version: 2024.0.1.ead3af10a01a built by Thomas
Ressourcen-Pfad: C:\Program Files\Hugin\share\hugin\xrc\
Datenpfad: C:\Program Files\Hugin\share\hugin\data\
Hugins Kamera- und Objektivdatenbank: C:\Users\redacted\AppData\Roaming\hugin\camlens.db
Multi-Threading mittels C++11 std::thread und OpenMP
Monitorprofile: C:\WINDOWS\system32\spool\drivers\color\SX2462W(6500K,120cd,G2.2).icm
Bibliotheken
wxWidgets: wxWidgets 3.3
wxWidgets Library (wxMSW port)
Version 3.3.0 (Unicode: wchar_t, debug level: 1),
compiled at Nov 15 2024 16:59:10
Runtime version of toolkit used is 10.0.
libpano13: 2.9.22
Exiv2: 0.28.1
SQLite3: 3.46.0
Vigra: 1.12.1
LittleCMS2: 2.14
** Affects: hugin
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2111856
Title:
Issue with 16-bit TIFF from Adobe Lightroom
Status in Hugin:
New
Bug description:
When I export raw images as 126.bit TIFF in Adobe Lightroom 5, Hugin
outputs a warning like this when creating control points:
Warning: TIFFDecoder: no TIFFTAG_SAMPLEFORMAT or TIFFTAG_DATATYPE,
guessing pixeltype 'UINT16'.
Exiftools finds out this from the images (extract):
Bits Per Sample : 16 16 16
Photometric Interpretation : RGB
Samples Per Pixel : 3
Rows Per Strip : 16
Later when Hugin assembles the panorama, there's another warning:
enblend: warning: deduced output pixel type is "UINT16", but image type "JPEG"
enblend: warning: supports "UINT8" at best; will use "UINT8"
(I consider JPEG to be good enough for the final panorama, and you
can't really compare 8-bit RGB with 8-bit YCbCr, can you?)
In essence: The messages seem to suggest that 16-bit images for input
aren't fully supported.
System info (partially redacted):
Betriebssystem: Windows 10 (build 19045), 64-bit edition
Architektur: 64 bit
Freier Speicher: 7495296 kiB
Aktive Codepage: 1252 (Western European Windows)
Hugin
Version: 2024.0.1.ead3af10a01a built by Thomas
Ressourcen-Pfad: C:\Program Files\Hugin\share\hugin\xrc\
Datenpfad: C:\Program Files\Hugin\share\hugin\data\
Hugins Kamera- und Objektivdatenbank: C:\Users\redacted\AppData\Roaming\hugin\camlens.db
Multi-Threading mittels C++11 std::thread und OpenMP
Monitorprofile: C:\WINDOWS\system32\spool\drivers\color\SX2462W(6500K,120cd,G2.2).icm
Bibliotheken
wxWidgets: wxWidgets 3.3
wxWidgets Library (wxMSW port)
Version 3.3.0 (Unicode: wchar_t, debug level: 1),
compiled at Nov 15 2024 16:59:10
Runtime version of toolkit used is 10.0.
libpano13: 2.9.22
Exiv2: 0.28.1
SQLite3: 3.46.0
Vigra: 1.12.1
LittleCMS2: 2.14
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