[Tracker] JPEG EXIF Metadata

["Damien Moore" <damienlmoore gmail com>]

This is probably a stupidity on my part, but I'm not sure where else to ask...

I'm using ubuntu 8.04 with the default install of tracker v0.6. I've indexed a large number of photos and have started tinkering with tracker's dbus interface and the tracker-extract command and noticed a couple things:

1. GetRegisteredTypes method in the org.freedesktop.Tracker.Metadata interface returns an empty list for the service_type 'Files' or 'Images'. Is this method not fully supported in the v0.6.6? (I notice the GetAll method available in trunk appears to be absent altogether in 0.6.6)

2. When I use tracker-extract to look at the metadata I see the following paltry list of key,item pairs (notably no date information!!)

tracker-extract /path/to/file/p1050699.jpg image/jpeg
Image:ISOSpeed=400;
Image:CameraModel=DMC-FZ50;
Image:WhiteBalance=Auto white balance;
Image:ExposureProgram=Normal program;
Image:FNumber=3.2;
Image:Software=Ver.1.0;
Image:Orientation=left - bottom;
Image:Height=3648;
Image:CameraMake=Panasonic;
Image:Width=2736;
Image:ExposureTime=0.083333333333333329;
Image:MeteringMode=Pattern;
Image:Flash=1;
Image:FocalLength=9.6;

exiftool on the same image

 exiftool /path/to/image/p1050699.jpg
ExifTool Version Number         : 7.00
File Name                       : p1050699.jpg
Directory                       : /path/to/image
File Size                       : 1386 kB
File Modification Date/Time     : 2008:04:23 00:52:14
File Type                       : JPEG
MIME Type                       : image/jpeg
Exif Byte Order                 : Little-endian (Intel)
Make                            : Panasonic
Camera Model Name               : DMC-FZ50
X Resolution                    : 72
Y Resolution                    : 72
Resolution Unit                 : inches
Software                        : Ver.1.0
Modify Date                     : 2007:12:31 19:59:44
Y Cb Cr Positioning             : Co-sited
Exposure Time                   : 1/13
F Number                        : 3.2
Exposure Program                : Program AE
ISO                             : 400
Exif Version                    : 0221
Date/Time Original              : 2007:12:31 19:59:44
Create Date                     : 2007:12:31 19:59:44
Components Configuration        : YCbCr
Compressed Bits Per Pixel       : 2
Exposure Compensation           : 0
Max Aperture Value              : 2.8
Metering Mode                   : Multi-segment
Light Source                    : Unknown (0)
Flash                           : Off
Focal Length                    : 9.6mm
Image Quality                   : Raw
Firmware Version                : 0.1.0.7
White Balance                   : Auto
Focus Mode                      : Auto
AF Mode                         : Spot Focusing
Image Stabilization             : On, Mode 1
Macro Mode                      : On
Shooting Mode                   : Program
Audio                           : No
Data Dump                       : (Binary data 6152 bytes, use -b option to extract)
Flash Bias                      : 0
Internal Serial Number          : 9999:99:99 00:00
Panasonic Exif Version          : 0210
Color Effect                    : Off
Time Since Power On             : 00:00:49.67
Burst Mode                      : Off
Sequence Number                 : 0
Noise Reduction                 : Low
Self Timer                      : Off
Rotation                        : Rotate 270 CW
Color Mode                      : Normal
Optical Zoom Mode               : Standard
Conversion Lens                 : Off
Travel Day                      : n/a
WB Adjust AB                    : 0
WB Adjust GM                    : 0
Maker Note Version              : 0100
Scene Mode                      : Off
WB Red Level                    : 1532
WB Green Level                  : 1054
WB Blue Level                   : 2812
Baby Age                        : :00
Flashpix Version                : 0100
Color Space                     : sRGB
Exif Image Width                : 2736
Exif Image Length               : 3648
Sensing Method                  : One-chip color area
File Source                     : Digital Camera
Scene Type                      : Directly photographed
Custom Rendered                 : Custom
Exposure Mode                   : Auto
Digital Zoom Ratio              : 0
Focal Length In 35mm Format     : 45mm
Scene Capture Type              : Standard
Gain Control                    : High gain up
Contrast                        : Low
Saturation                      : Normal
Sharpness                       : Soft
Compression                     : JPEG (old-style)
Orientation                     : Rotate 270 CW
Thumbnail Offset                : 7798
Thumbnail Length                : 4688
Image Width                     : 2736
Image Height                    : 3648
Encoding Process                : Baseline DCT, Huffman coding
Bits Per Sample                 : 8
Color Components                : 3
Y Cb Cr Sub Sampling            : YCbCr4:4:0 (1 2)
Aperture                        : 3.2
Blue Balance                    : 2.667932
Image Size                      : 2736x3648
Red Balance                     : 1.45351
Scale Factor To 35mm Equivalent : 4.7
Shutter Speed                   : 1/13
Thumbnail Image                 : (Binary data 4688 bytes, use -b option to extract)
Circle Of Confusion             : 0.006 mm
Focal Length                    : 9.6mm (35mm equivalent: 45.0mm)
Hyperfocal Distance             : 4.49 m
Light Value                     : 5.1


what am I missing?