PATTERN RECOGNIZING DEVICE

A pattern recognizing device is disclosed, in which the pattern recognition is effected by classifying all the parts of a stroke of an inputted pattern into three groups, those which are clearly arcs, those being clearly segments of line and those which are ambiguous, for which it is not possible to determine whether they are arcs or segments of line; forming a plurality of patterns of stroke structure, each of which is represented by data of a series of elements, which are arcs or segments of line, i.e. by a pattern consisting of those elements for each of the cases where it is supposed that each of the ambiguous parts is an arc or a segment of line, without interpreting it to be an arc or a segment of line; comparing each of the patterns of stroke structure thus obtained with a pluarlity of thesaurus patterns of stroke structure previously registered in a memory; checking the similarity of the structure or the similarity of every smoothly curved or straight part; and selecting a registered pattern having the greatest similarity.