Captcha Recognition Algorithm Based on the Fuzzy Clustering and RBF Network Integrated Classifier
Juan Liu · Journal of Northeast Dianli University · 2012
This paper puts forward a kind of integrated classifier based on fuzzy clusteringand the back propagation neural network,for the Captcha recognition with merged charac-ters.This classifier using of the dynamic feedback thought combination with segmentation and recognition.First,extracted feature of character by fuzzy clustering algorithm,and ta-ke it as the input of the RBF neural network.Then the network selects the node dynami-cally based on recognition confidence and membership degree of character features.Finally,Validation effectiveness and recognition rate through experiments.This classifier reflects the idea that considering the overall as priority and the details as compensation,making fulluse of information of the training sample set,and improving recognition rates of low qua-lity characters.