| 摘要 |
PURPOSE:To detect a linear graph which contains closed graphs without division by performing core processing which leaves only the center line of a shown part. CONSTITUTION:A decision on whether an observation point group at the background part in a rectangular drawing area 101 is linked to that at the outermost edge of the area 101 with the same quantized value or not is made, and a decision on whether linear graphs 1031-1036 and symbols 1021-102A shown in Fig. constitute a closed area or not is made. Then when the closed area has prescribed area, information required for the processing of a part succeeding the closed area is extracted the quantized value of an observation point group corresponding to the inside of the closed area is changed into the same quantized value with the shown part. Then, core treatment which leaves only the center line of the shown part is carried out to detect a core-treated graph 700 without dividing the linear graph which contains the closed graph. |
