title: Real time traffic sign recognition in android
body: <p>I'm trying to develop a mobile app for traffic sign recognition and i want it to be in real-time. I'm trying only to detect circles signs and to find out what sign is in order to notify the driver. I want to know what is the best method I should use. For now I've tried using java and opencv to find the circles in an image (using HoughCircles) but is not quite what I've expected - a lot of signs aren't identified. Then I tried to use opencv  for training it to learn the signs - to obtain an xml trained classifier, but it takes too long and to be functionally I need a really large amount of data. I don't know what to do ... Thank you in advance.</p>