hugin-devs team mailing list archive

["U. Windl" <2111856@xxxxxxxxxxxxxxxxxx>]

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

-- 
You received this bug notification because you are a member of Hugin
Developers, which is subscribed to Hugin.
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

To manage notifications about this bug go to:
https://bugs.launchpad.net/hugin/+bug/2111856/+subscriptions