Collection of characters written by the fingertip and mechanical measurement of their characteristics

研究使用了两种输入设备，人们可以用指尖在自然感觉中书写汉字。一个是三维指向装置PHANToM，另一个是数字化装置。这些输入设备经过精心选择，采集的字符数据时间精度尽可能高。使用三维点触器时，写字人将麻袋装在指尖。通过在空间中移动指尖，每隔10ms采集x、y、z的三维坐标值数据。没有笔，数字化仪无法实现用指尖书写的第一个目的。而数字化仪除了测量x和y的二维坐标值外，还可以测量笔的倾斜度和压力，我们可以收集到大量的数据。用指尖在空格中写入字符所得到的数据如何处理的研究还没有人做过。我们试着输入并识别一个简单的符号，比如圆圈和勾号。结果证明，它能够通过两端距离和整个笔画长度的比例准确识别两个符号。10名测试者分别用三维点字器写下100个字和签名。总数据数超过1万字，为今后的研究提供了一个有价值的有用数据库。注：PHANToM是SensAble Technologies Company的注册商标。

Two input equipments to which the person is able to write the character by the fingertip in natural feelings were used for the research. One is three-dimensional pointing device PHANToM and the other is a digitizer. These input equipments were chosen carefully to collect the character data that the temporal accuracy is as good as possible. When three-dimensional pointing device is used, the writing person installs the sack in the fingertip. And, three dimension coordinates value data of x, y and z can be collected at 10ms intervals by moving the fingertip in the space. The digitizer cannot achieve the first purpose of writing by the fingertip without a pen. However, the digitizer can measure the inclination and pressure of the pen besides two dimension coordinates value of x and y, and we were able to collect a large amount of the data.The research on which the data obtained by writing the character in the space by the fingertip is processed has never been done. We tried to input and to recognize an easy sign like the circle and the check mark. It turned out to be able to recognize two signs accurately by the ratio to the distance between the both end points and the length of entire strokes.10 testers wrote 100 characters and signatures respectively by using three-dimensional pointing device. The number of total data was exceeding 10,000 characters and we were able to make a valuable useful database for the research in the future.Note : PHANToM is a registered trademark of the SensAble Technologies Company.