[Digikam-devel] [Bug 136897] New: THM files are not uploaded

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[Digikam-devel] [Bug 136897] New: THM files are not uploaded

Bugzilla from pwaldo@waldoware.com
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           Summary: THM files are not uploaded
           Product: digikam
           Version: 0.9.0-beta3
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel kde org
        ReportedBy: pwaldo waldoware com


Version:           0.9.0-beta3 (using KDE KDE 3.5.5)
Installed from:    Compiled From Sources
Compiler:          g++ (GCC) 4.0.3 (Ubuntu 4.0.3-1ubuntu5)
OS:                Linux

Canon RAW files (*.CRW) can be uploaded with no problem, but thumbnail files (*.THM) are ignored.
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[Digikam-devel] [Bug 136897] THM files are not uploaded

Gilles Caulier-2
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------- Additional Comments From caulier.gilles kdemail net  2006-11-05 21:13 -------
Yes, file are ignored to download and removed is corresponding RAW file is deleted from camera. THM files are used by camera interface to render thumbnails.

What do you want to do with .THM files. There is only a small thumb and Exif metada-data in these files.

Gilles Caulier
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[Digikam-devel] [Bug 136897] THM files are not uploaded

Gilles Caulier-2
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caulier.gilles kdemail net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |Camera GUI
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[Digikam-devel] [Bug 136897] THM files are not uploaded

Bugzilla from pwaldo@waldoware.com
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------- Additional Comments From pwaldo waldoware com  2006-11-06 15:12 -------
I would like to keep the THM files for two reasons:
1. They are generated by the camera and part of the "digital negative"
2. I'm not sure whether every bit of information in the THM is duplicated in the CRW.  I would hate to find out thousands of pictures later that some important piece of data is contained in the THM, but they were all discarded.

I propose copying the THM file along with the CRW, applying the same name transformation as the CRW.
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[Digikam-devel] [Bug 136897] THM files are not uploaded

Gilles Caulier-2
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------- Additional Comments From caulier.gilles kdemail net  2006-11-06 15:19 -------
>1. They are generated by the camera and part of the "digital negative"

THM is not a negative file. RAW file is...

> 2. I'm not sure whether every bit of information in the THM is duplicated in the CRW.  

Yes. You can find all Exif/makernote data in CRW.

>I would hate to find out thousands of pictures later that some important piece of data is >contained in the THM, but they were all discarded.

Note than in some camera model (my Dynax 5D for example), the THM file only content the standard Exif data, not the makernotes... My MRW raw file has all metadata.

This is why digiKam forget THM file to download. Also, i think than THM can be confuse for end users. THM are not valid pictures to use like a photograph for editing and publishing.

Gilles Caulier
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[Digikam-devel] [Bug 136897] THM files are not uploaded

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------- Additional Comments From pwaldo waldoware com  2006-11-06 16:37 -------
Created an attachment (id=18433)
 --> (http://bugs.kde.org/attachment.cgi?id=18433&action=view)
EXIF data for CRW
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[Digikam-devel] [Bug 136897] THM files are not uploaded

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------- Additional Comments From pwaldo waldoware com  2006-11-06 16:38 -------
Created an attachment (id=18434)
 --> (http://bugs.kde.org/attachment.cgi?id=18434&action=view)
EXIF data for THM
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[Digikam-devel] [Bug 136897] THM files are not uploaded

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------- Additional Comments From pwaldo waldoware com  2006-11-06 16:39 -------
While a great deal of the EXIF data is duplicated in the CRW, some data is ONLY contained in the THM.  

I've attached two files, both generated from exiv2 using the commands
"exiv2 -b -p i CRW_7141.CRW" and
"exiv2 -b -p i CRW_7141.THM".  

You can tell just from the size that they are not identical, but if you do a more detailed comparison, you can see that there is important data missing in the CRW's EXIF data:
grep -a ISO CRW*.txt
CRW_7141.CRW.txt:0x0002 CanonSi      ISOSpeed         Short       1  192
CRW_7141.CRW.txt:0x0010 CanonCs      ISOSpeed         Short       1  0
CRW_7141.THM.txt:0x8827 Photo        ISOSpeedRatings  Short       1  200
CRW_7141.THM.txt:0x0010 CanonCs      ISOSpeed         Short       1  0
CRW_7141.THM.txt:0x0002 CanonSi      ISOSpeed         Short       1  192

Note that the THM contains ISOSpeedRatings, but the CRW does not
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[Digikam-devel] [Bug 136897] THM files are not uploaded

Gilles Caulier-2
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------- Additional Comments From caulier.gilles kdemail net  2006-11-06 16:44 -------
We currently working to update all makernotes from Exiv2 using ExifTool database. Canon makernote parser, witch give the extended Exif informations is an old implemented in Exiv2 an d need to be updated.

If you want to check both file, try to use the last ExifTool version instead Exiv2

Gilles
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[Digikam-devel] [Bug 136897] THM files are not uploaded

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------- Additional Comments From pwaldo waldoware com  2006-11-06 17:19 -------
Is this a "configure" setting to use exiftool versus exiv2?

I ran exiftool on both the CRW and THM file and there are still differences in the data in each of the files.  Below is a diff between the sorted output of exiftool for the CRW and the THM.

Examples of the data *missing* from the CRW that *is* included in the THM is "Orientation" and "Scale Factor To 35mm Equivalent".  This is good stuff that shouldn't be thrown away!

pwaldo office:~/Projects/photo/hdr-test/shack/exif$ diff sorted_CRW_7141.CRW.exiftool.txt sorted_CRW_7141.THM.exiftool.txt
4,5c4,6
< Aperture                        : 10
< Aperture                        : 10.1
---
> Aperture                        : 10.0
> Aperture                        : 10.0
> Aperture Value                  : 10.0
8d8
< Base ISO                        : 100
23c23
< Canon File Description          : EOS DIGITAL REBEL CMOS RAW
---
> Canon File Length               : 8917246
32,33c32
< Color Bit Depth                 : 24
< Color BW                        : 257
---
> Circle Of Confusion             : 0.019 mm
37c36,37
< Component Bit Depth             : 8
---
> Components Configuration        : YCbCr
> Compressed Bits Per Pixel       : 9
40c40,42
< Decoder Table                   : 0 0 514 5006108
---
> Custom Rendered                 : Normal
> Date/Time Of Digitization       : 2006:11:04 14:18:20
> Date/Time Of Last Modification  : 2006:11:04 14:18:20
44a47,48
> Exif Image Length               : 120
> Exif Image Width                : 160
45a50
> Exif Version                    : 0221
47c52
< File Format                     : CRW
---
> Exposure Mode                   : Manual
49c54
< File Name                       : CRW_7141.CRW
---
> File Name                       : CRW_7141.THM
51,52c56,58
< File Size                       : 9 MB
< File Type                       : Canon RAW
---
> File Size                       : 12 kB
> File Source                     : Digital Camera
> File Type                       : JPEG
55a62
> Flash                           : No Flash
56a64
> Flashpix Version                : 0100
58c66,68
< Focal Length                    : 25mm
---
> Focal Length                    : 25.0mm (35mm equivalent: 39.7mm)
> Focal Plane Resolution Unit     : inches
> Focal Plane X Resolution        : 3443.95
59a70
> Focal Plane Y Resolution        : 3442.02
67c78,79
< Image Height                    : 2048
---
> Hyperfocal Distance             : 3.30 m
> Image Height                    : 120
69,70c81,84
< Image Size                      : 3072x2048
< Image Width                     : 3072
---
> Image Size                      : 160x120
> Image Width                     : 160
> Interoperability Index          : THM
> Interoperability Version        : 0100
73,74d86
< Jpg From Raw                    : (Binary data 2275348 bytes, use -b option to extract)
< Lens                            : 18.0 - 55.0mm
75a88
> Lens                            : 18.0 - 55.0mm (35mm equivalent: 28.6 - 87.4mm)
81c94
< Measured EV                     : 9.375
---
> Max Aperture Value              : 4.0
83,84c96,97
< MIME Type                       : application/unknown
< Original File Name              : CRW_7141.CRW
---
> MIME Type                       : image/jpeg
> Orientation                     : Horizontal (normal)
86,88d98
< Pixel Aspect Ratio              : 1
< Raw Data                        : (Binary data 6635694 bytes, use -b option to extract)
< Record ID                       : 0
98,99c108,110
< ROM Operation Mode              : USA
< Rotation                        : 0
---
> Related Image Length            : 2048
> Related Image Width             : 3072
> Resolution Unit                 : inches
100a112,113
> Scale Factor To 35mm Equivalent : 1.6
> Scene Capture Type              : Standard
103,108c116
< Sensor Bottom Border            : 2063
< Sensor Height                   : 2068
< Sensor Left Border              : 72
< Sensor Right Border             : 3143
< Sensor Top Border               : 16
< Sensor Width                    : 3152
---
> Sensing Method                  : One-chip color area
114,115c122,124
< Shutter Speed                   : 1/406
< Shutter Speed                   : 1/406
---
> Shutter Speed                   : 1/400
> Shutter Speed                   : 1/400
> Shutter Speed Value             : 1/400
117d125
< Target Compression Ratio        : 10
119,122d126
< Target Image Type               : Real-world Subject
< Thumbnail File Name             : CRW_7141.THM
< Time Zone Code                  : 0
< Time Zone Info                  : 0
124a129,131
> X Resolution                    : 180
> Y Cb Cr Positioning             : Centered
> Y Resolution                    : 180
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[Digikam-devel] [Bug 136897] THM files are not uploaded

Bugzilla from lure@kubuntu.org
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lure kubuntu org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lure kubuntu org



------- Additional Comments From lure kubuntu org  2006-12-25 19:21 -------
I also vote for this feature as .THM file is also used for video files from Canon cameras (my Powershot G3 also other non-SLR cameras). As .AVI does not contain thumbnail or any Exif data, using .THM does give opportunity to present videos better (with thumbnail, with proper properties, with correct date/time...).
Before switching to Linux (and digikam), I was using BreezeBrowser Pro/Downloader Pro from www.breezesys.com and they handle .THM together with RAW/AVI file as one entry (they do not show two entires) and all operations take care of both files.
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[Digikam-devel] [Bug 136897] THM files are not uploaded

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loic.brarda21 fnac net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
      everconfirmed|0                           |1



------- Additional Comments From loic.brarda21 fnac net  2007-01-14 19:30 -------
*** This bug has been confirmed by popular vote. ***
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[Bug 136897] THM files are not uploaded

Fabien-5
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------- Additional Comments From fabien.ubuntu gmail com  2007-03-21 18:00 -------
I agree with comment #9

I lost the creation date of all my videos created by Canon Ixus digital cameras... There are also some Exif data that could be useful.
The creation date is very useful, because it allows us to correlate it with a GPS track and to know exactly where the video were taken...

Maybe THM files could be uploaded, but not displayed in the thumbnails, just used to get informations about video files ? Even if digiKam can't deal with it, it could be uploaded for future usage...
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[Bug 136897] THM files are not uploaded

Fabien-5
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------- Additional Comments From fabien.ubuntu gmail com  2007-03-21 18:02 -------
Created an attachment (id=20062)
 --> (http://bugs.kde.org/attachment.cgi?id=20062&action=view)
Sample thm file created by a Canon Ixus camera
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[Bug 136897] THM files are not uploaded

Leo Britto
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------- Additional Comments From leosgb yahoo com br  2007-04-26 07:28 -------
I use THM files to post these videos in my website. It is extremely convenient way since I dont need to generate them manually. DigiKam is a very good tool but I am still using my Windows to download the videos since I want to have the THM files.
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Re: [Bug 136897] THM files are not uploaded

Arnd Baecker
If your camera acts like an USB storage device
it might be possible to directly copy them via konquerer
into the corresponding digikam.

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[Bug 136897] THM files are not uploaded

Arnd Baecker
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------- Additional Comments From arnd.baecker web de  2007-04-26 07:47 -------
If your camera acts like an USB storage device
it might be possible to directly copy them via konquerer
into the corresponding digikam.
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