| 摘要 |
A graphic form recognizer including a separate elevation angle computation and storage unit for extracting two reference points selected from a sequence of points constituting a predetermined section of an input graphic form and computing a separate elevation angle formed by line segments joining each of points of the sequence sandwiched between the reference points and each of the two reference points to compute a mean value, variance and mode of the separate elevation angle, a feature point extraction unit including a reference point setting portion and a reference point storage portion for further dividing the section sandwiched between the two reference points or integrating the section with another contiguous section according to said computed mean value and variance of the separate elevation angle, and a line kind determination unit for determining a kind of a line sandwiched between the two reference points according to the computed variance and mode of the separate elevation angle.
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