An image processing device and method for classifying symbols, such as text, in a video stream employs a back propagation neural network (BPNN) whose feature space is derived from size, translation, and rotation invariant shape-dependent features. Various example feature spaces are discussed such as...http://www.google.es/patents/US6731788?utm_source=gb-gplus-sharePatente US6731788 - Symbol Classification with shape features applied to neural network
Symbol Classification with shape features applied to neural network
