| 摘要 |
PURPOSE:To effectively extract a feature, to effectively make a dictionary after selecting an optimum feature value rank, and to reduce the capacity of the dictionary, by appreciating the ranking of plural features which have been prepared in advance, in accordance with a set unit. CONSTITUTION:A symbol set input consisting of a prescribed symbol is inputted to operating circuits 1-5, the number of black of a prescribed mesh is caught as a feature, and a stable coefficient of said feature is calculated. In said each operating circuit 1-5, a stable coefficient of each different feature is calculated, and each stable coefficient is supplied to a comparing circuit 6. In the comparing circuit 6, ranking is executed in order from a small stable coefficient of each feature, it is outputted, and a feature is extracted effectively. In this way, ranking is executed to an optimum feature value, an effective dictionary is made, and a symbol is recognized easily. |
