Aiming at the low recognition rate of Chinese characters in license plates a new recognition algorithm is proposed based on image fuzzy degree and principat component analysis(PCA) subspace classification method.First,the image fuzzy degree is computed according to triangular norm and non-fuzziness cardinality.Then the training samples are divided into three subsets in terms of fuzzy degree,and their corresponding PCA subspaces are constructed.At last,the character is recognized in the specific subspaces wh...