CokeTunes
Inside of very german Coca Cola cap is a code to download a fourth iTunes song, so 4 caps = 1 song. I do not drink coke, but my brothers have a high Coca Cola consumption. Manually type in all the codes is very annoying and I always wanted to do some research in image recognition. So I have written some code to automatically detect the key inside the cap.
The first problem is take a good image. I made a mark on my desk where to put the cap. The code has to be in the upper part of the image. The next step is to find the center and crop the image. This is done with simple pattern matching of a mask. Removing the colors and adjust the brightness is a simple batch job.Arrange the code in a straight line is done by a simple program I have written with OpenGL. It uses the image as a texture and draws a quad strip with circular texture coordinates.
In the end I pass the final image to an open source OCR tool. At the moment the recognition rate is around 50%. But maybe I can improve this.
P.S.: The pictured codes are unused. So this is your chance to get a free song.
on April 22nd, 2008 at 16:24
Hallo Max!
Du hast wirklich zu viel Zeit, oder?
Was macht Deine Master-Bewerbung?
Gruß,
Jeremy
on April 28th, 2008 at 2:52
[…] Cola consumption. Manually type in all the codes is very annoying and I always wanted to do some rhttp://emergencyexit.untergrund.net/2008/04/coketunes/Get FREE 25 song playlists on iTunes!Join the Apple Students group on Facebook and each week, you […]
on June 6th, 2008 at 22:57
no more updates? :(
on July 3rd, 2008 at 20:06
Hey McZonk any new updates on Quake 2 for us? Hope everythings going all right for you man. Thanks for all your hardwork so far!
on July 4th, 2008 at 12:35
we want updatesss
on July 16th, 2008 at 15:22
McZonk: Still Wanted for finishing Quake 2 :-)