Extraction system for bending point of hand-written picture input device
专利汇可以提供Extraction system for bending point of hand-written picture input device专利检索，专利查询，专利分析的服务。并且PURPOSE: To precisely detect a bending point by extracting a typical point, removing a display point including noise and detecting a partial curve based on a change in an angle between typical points.
CONSTITUTION: A display point extraction part 12 extracts a few display point strings practically following the drawn line of a hand-written picture from an inputting coordinate string followed by the input of the hand-written picture. A typical point extraction part 14 extracts a typical point through the use of a recursive typical point extraction system with respect to the display point string. First two end points of the picture are defined as typical points, then a display point farthest from a line segment connecting two end points among display points lying between the first two end points is selected, and a changing angle between two line segments connecting the display point and two end points is investigated. If the valve exceeds the prescribed threshold (1st threshold S
1 ), the display point is extracted as a typical point. A critical point extraction part 16 sequentially connects the typical points by line segments. If the changing angle between adjacent line segments exceeds the prescribed threshold (2nd threshold S
2 ), its in-between typical point is extracted as a critical point.
COPYRIGHT: (C)1987,JPO&Japio，下面是Extraction system for bending point of hand-written picture input device专利的具体信息内容。
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