This week, I applied the line receptor algorithm for the full set of traffic sign pattern recognition. The ANN training results are summarized at Extension for the traffic sign recognition. Although it take much longer time (571 seconds) compared to the small set (0.28 sec) for training at my laptop (P4 2.66GHz 512MB), this is quite acceptable in my opinion.
One thing that is deviated from my expectation is that the training result is better than I think that would be. This ANN is trained very well still showing zero error for whole 325 input patterns. However, input patterns used in this experiment are computer generated synthetic images having very clear colors and boundaries. So it is time to move to real traffic signs captured on the road for the ANN testing and if necessary, more training.