On-Line hand-drawn shape recognition 联机手绘图形
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As curves can be approached by polygons, line judgment is very important in image analysis, recognition, measurement, etc where shape matching is needed.
由于曲线通常可以用直线段逼近，直线判别在图象分析、识别及测量等很多涉及形状匹配的领域均有重要应用。
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