| 摘要 |
PURPOSE:To discriminate a straight line, an arc, a position close to a bent point precisely by calculating the change of the distance di of a straight line between a picture element point (i) expressed with binary coding of a linear graphic and a straight line between a picture element point (iXm) and a picture element point (i+m) which are separated from a picture element point (i) by (m) picture elements. CONSTITUTION:A hand-written linear graphic is encoded into binary data by an A/D converter 3 and temporally stored in a picture memory 4. The binary picture data are read out from the memory 4, supplied to a thinning circuit 5 to form the shown dot string (i) (i=1-n), and then a straight component, an arc component and a position (a bent point) close to a bent point are respectively discriminated from the changing status of the distance di. The discriminated result is temporally stored in a vector memory 6, read out again and then supplied to a vector generating part 7 for generating linear graphic data.
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