Hi Simon, On Wed, Apr 29, 2009 at 5:06 PM, <[email protected]> wrote:
> > The only question I have (and this is not a put down) is why? > I was fairly confident someone would see the heavy processing flaw :-) > > Any encoding on the video image is going to reduce the quality of the > barcode image and thus make it a little harder to read and apart from > being cool not many people can read 2D barcodes by eye. > This is true, I'm waiting for the open standard to settle before getting my brain 2D barcode enabled. The reason I chose a QR Code (or any other barcode) is that it's machine readable even in blurry and twisted orientations, making it quite robust on encoded video. Turns out I can record at a resolution lower than it can be normally read. When I enlarge the extracted png to 2x size it still works. Plus QuickMark on Symbian S60 makes a funny noise when it captures that appeals the child in me. ;-) > Personally I would think encoding the NMEA string into APRS beacons (or > the like) onto the audio track would be the way to go. That way it could > be done without any processing power in the car - just a GPS, APRS encoder > (can be a simple as a PIC or OpenTracker) and a camcorder with a line/mic > input. > Yes, definitely audio is the least processor-intensive way of getting a synchronised input. I was mostly faffing. I've seen FSK used, can APRS be recorded onto an audio track then? > > If you are going to process the video you could render the GPS data as a > human readable graphic overlay (think speedometer, compass heading, > lat/long, etc) onto the video... but why not include a 2D barcode too. > I should be able to do that stuff, but VLC didn't seem to offer much in the way of text overlay, just image overlay. I suppose I could make text into an image with an alpha channel. Anyway, this isn't really a big deal for me, just an interesting exercise in faffing. > > Anyway 'way cool', > Simon. Thanks :-) Ben -- [email protected] | http://crouchingbadger.com
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