Intelligent Projects Using Python

Converting the CAPTCHA characters to classes

The raw characters of the CAPTCHA need to be converted to numerical classes for training purposes. The create_dict_char_to_index function can be used to convert the raw characters into class labels:

def create_dict_char_to_index():    chars = 'abcdefghijklmnopqrstuvwxyz0123456789'.upper()    chars = list(chars)    index = np.arange(len(chars))    char_to_index_dict,index_to_char_dict = {},{}    for v,k in zip(index,chars):        char_to_index_dict[k] = v         index_to_char_dict[v] = k     return char_to_index_dict,index_to_char_dict