文件名称:
Direction-Change Features of Imaginary Strokes
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文件大小: 104kb
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上传时间: 2018-03-05
详细说明： We found suitable direction-change features of the imaginary strokes in the pen-up state for on-line handwritten cursive character recognition. Our method simultaneously uses both directional features, otherwise known as off-line features, and direction-change features, which we designed as on-line features. The directional features express where and in which direction each character’s coordinates exist. The direction-change features express where and in which direction each direction of the character’s coordinates change, and e xpress where the circular parts of the character exist. These direction-change features express both written strokes in the pen-down state and unwritten imaginary strokes in the pen-up state. It is important to get suitable direction-change features when using this method. We tried to examine the influence on character recognition rates when changing the functions used to get each direction-change feature based on the imaginary stroke lengths. Then, we found that the best function is the function which puts no weight on the imaginary stroke lengths. The recognition rate for freely-written Japanese characters was improved from 82.37% to 86.32 % by our new method using the best function as opposed to our old method using a function which gets each direction change feature in inverse proportion to the imaginary stroke lengths. ...展开收缩
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