Author Topic: Extracting, Geotag information from .jpg (EXIF 2.2 Metadata)  (Read 3094 times)

Genesis

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Extracting, Geotag information from .jpg (EXIF 2.2 Metadata)
« on: April 03, 2014, 07:14:45 PM »
Good Morning,

I am trying with no luck so far to form an exif string that will extract the Geotagged information from .jpg images (EXIF 2.2 Metadata).
hardware and software details are as follows:

1. Camera - is a Chicony 5MP module (CKAC520) integrated into the GETAC F110 ruggedised Tablet.
2. Software - GETAC Virtual-GPS in conjunction with GETAC Camera software.

The Geotagged information is being watermarked onto the Image so I know it is being recorded, however I ahve had no luck so far extracting it via exiftool.

Any assistance is appreciated. I have attached a sample for any testing you want to run.

Murray

Alan Clifford

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Re: Extracting, Geotag information from .jpg (EXIF 2.2 Metadata)
« Reply #1 on: April 04, 2014, 06:40:53 AM »
All I could see in that file was
Code: [Select]
[ExifTool]      ExifTool Version Number         : 9.53
[File]          File Name                       : IMG_000003.jpg
[File]          Directory                       : .
[File]          File Size                       : 642 kB
[File]          File Modification Date/Time     : 2014:04:04 11:38:58+01:00
[File]          File Access Date/Time           : 2014:04:04 11:38:59+01:00
[File]          File Inode Change Date/Time     : 2014:04:04 11:38:58+01:00
[File]          File Permissions                : rw-r--r--
[File]          File Type                       : JPEG
[File]          MIME Type                       : image/jpeg
[File]          Image Width                     : 2592
[File]          Image Height                    : 1944
[File]          Encoding Process                : Baseline DCT, Huffman coding
[File]          Bits Per Sample                 : 8
[File]          Color Components                : 3
[File]          Y Cb Cr Sub Sampling            : YCbCr4:2:0 (2 2)
[JFIF]          JFIF Version                    : 1.01
[JFIF]          Resolution Unit                 : inches
[JFIF]          X Resolution                    : 96
[JFIF]          Y Resolution                    : 96
[Composite]     Image Size                      : 2592x1944

So something is stripping the metadata.

Phil Harvey

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Re: Extracting, Geotag information from .jpg (EXIF 2.2 Metadata)
« Reply #2 on: April 04, 2014, 07:08:44 AM »
ExifTool reads metadata, and can not extract text rendered in the image itself.  In your file, there is no GPS metadata to read as Alan points out.

- Phil
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).

Genesis

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Re: Extracting, Geotag information from .jpg (EXIF 2.2 Metadata)
« Reply #3 on: April 06, 2014, 06:21:33 PM »
Thank you alan & Phil,

I did manage to extract the same ammount of information as Alan but thought I was doing something wrong.

I had a hunch that the GPS metadata was not being encoded. The software manual for the camera and  GPS states

"Getac Camera is a geo-tagging camera program, which allows you to stamp geographical information on photos as watermarks and embed such information into JPEG files as EXIF 2.2 metadata"

I have managed to get the geotagging watermark function to work however as we have discovered the Metadata is not being recorded.
I have downloade the latest camera and GPS software so I hope that this will fix the issue.

I will post the results.

Murray

Genesis

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Re: Extracting, Geotag information from .jpg (EXIF 2.2 Metadata)
« Reply #4 on: April 07, 2014, 12:26:23 AM »
UPDATE,

Latest Driver and software for the GPS and camera now save the GPS info in Metadata.

Murray