hi,
I am a new here, so sorry for any mistakes...

I am doing a small app in Matlab 5.3. It should recognise letters and digits by using neural network. I have read a few articles about
Matlan and NN, but still I have a few questions:
- I have chosen network with backpropagation (ok?)
- my network should recognise 25 letters and 10 digits
- my network should consist of 3 layers (is it a good choice?)
- each letter will be the black&white matrix 9x13 (should I use bigger/smaller matrix to get better quality of recognition? What should be values of pixels: 0&1 or other?)
- how many neurons should be in each layer. I think the 1st input layer should consist of 35 neurons (beause there are 35 letters and digits), the 3rd output layer consists of 35 neurons as well. What about the internal layer (2nd one)?

thx in advance for any help!