http://www.opgenorth.net/tags/C%23/Recent content in C# on Opgenorth.NETHugoen-usMon, 18 Feb 2013 00:00:00 +0000http://www.opgenorth.net/posts/write-gps-to-jpg/Mon, 18 Feb 2013 00:00:00 +0000http://www.opgenorth.net/posts/write-gps-to-jpg/<p>One of the handy things about the JPEG format is the ability to store meta-data inside the image using <a href="http://en.wikipedia.org/wiki/Exchangeable_image_file_format">EXIF</a>. There are a few libraries out there for the various programming languages that can help you out with this, and Android actually has something built in to the SDK - the class <a href="http://developer.android.com/reference/android/media/ExifInterface.html">ExifInterface</a>.</p> <p>Google&rsquo;s documentation on writing latitude and longitude to a JPEG are a bit light on details - they loosely hint at the format that latitude or longitude should have. (See the documentation for <a href="http://developer.android.com/reference/android/media/ExifInterface.html#TAG_GPS_LATITUDE">ExifInterface.TAG_GPS_LATITUDE</a>). The API itself is pretty straight forward, but what Google doesn&rsquo;t tell you is HOW the GPS coordinates should encoded.</p>