This paper presents a new translation and rotation invariant pattern recognition method using neural network. It become clearly that the left-right, up-down translation or/and rotation invariance are achieved by only simple preprocessing to the original patterns without improvent of the network structure. We can use three layer feed-forward network with back-propagation as learning and recognizing in proposed method. Therefore, proposed method has following merits: the net size is relative small, learning and recognizing is easy. Moreover, 100 percent recognit ion rate is realizing by proposed method for the alphabet.
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