Submitted by Jonathan on 30 August 2008 - 10:43pm
I've recently got quite excited by photographs that have been geotagged with location information. This is an example of EXIF file header which can be found in files. I have highlighted the GPS location information which is stored by the Apple iPhone 3G.
ExifTool is useful tool. It is essentially a file editor that enables this information to be modified.
| ExifTool Version Number |
7.41 |
| File Name |
jamboree-small.jpg |
| Directory |
/Users/jonathan/Desktop |
| File Size |
28 kB |
| File Modification Date/Time |
2008:08:30 23:54:50 |
| File Type |
JPEG |
| MIME Type |
image/jpeg |
| JFIF Version |
1.01 |
| Exif Byte Order |
Big-endian (Motorola, MM) |
| Make |
Apple |
| Camera Model Name |
iPhone |
| Orientation |
Horizontal (normal) |
| X Resolution |
72 |
| Y Resolution |
72 |
| Resolution Unit |
inches |
| Modify Date |
2008:08:01 20:21:27 |
| F Number |
2.8 |
| Date/Time Original |
2008:08:01 20:21:27 |
| Create Date |
2008:08:01 20:21:27 |
| Color Space |
Uncalibrated |
| Exif Image Width |
360 |
| Exif Image Height |
263 |
| Gamma |
2.2 |
| GPS Latitude Ref |
North |
| GPS Longitude Ref |
West |
| Compression |
JPEG (old-style) |
| Thumbnail Offset |
191 |
| Thumbnail Length |
5904 |
| Date/Time Digitized |
2008:08:01 20:21:27+00:00 |
| Profile CMM Type |
ADBE |
| Profile Version |
2.1.0 |
| Profile Class |
Display Device Profile |
| Color Space Data |
RGB |
| Profile Connection Space |
XYZ |
| Profile Date Time |
2000:08:11 19:51:59 |
| Profile File Signature |
acsp |
| Primary Platform |
Apple Computer Inc. |
| CMM Flags |
Not Embedded, Independent |
| Device Manufacturer |
none |
| Device Model |
|
| Device Attributes |
Reflective, Glossy, Positive, Color |
| Rendering Intent |
Perceptual |
| Connection Space Illuminant |
0.9642 1 0.82491 |
| Profile Creator |
ADBE |
| Profile ID |
0 |
| Profile Copyright |
Copyright 2000 Adobe Systems Incorporated |
| Profile Description |
Adobe RGB (1998) |
| Media White Point |
0.95045 1 1.08905 |
| Media Black Point |
0 0 0 |
| Red Tone Reproduction Curve |
(Binary data 14 bytes, use -b option to extract) |
| Green Tone Reproduction Curve |
(Binary data 14 bytes, use -b option to extract) |
| Blue Tone Reproduction Curve |
(Binary data 14 bytes, use -b option to extract) |
| Red Matrix Column |
0.60974 0.31111 0.01947 |
| Green Matrix Column |
0.20528 0.62567 0.06087 |
| Blue Matrix Column |
0.14919 0.06322 0.74457 |
| Image Width |
360 |
| Image Height |
263 |
| Encoding Process |
Baseline DCT, Huffman coding |
| Bits Per Sample |
8 |
| Color Components |
3 |
| Y Cb Cr Sub Sampling |
YCbCr4:2:2 (2 1) |
| Aperture |
2.8 |
| GPS Latitude |
51 deg 51' 18.00" N |
| GPS Longitude |
1 deg 14' 32.40" W |
| GPS Position |
51 deg 51' 18.00" N, 1 deg 14' 32.40" W |
| Image Size |
360x263 |
| Thumbnail Image |
(Binary data 5904 bytes, use -b option to extract) |
