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

研究中使用了两种输入设备，使用者可以在自然的感觉中用指尖书写字符。一个是三维指向设备PHANToM，另一个是数字化仪。这些输入设备都经过精心挑选，以尽可能好的时间精度来采集字符数据。当使用三维指向装置时，书写者将袋子安装在指尖。并且，通过在空间中移动指尖，可以以10ms的间隔收集x、y和z的三维坐标值数据。数字化仪无法实现第一个目的，即不用笔用指尖书写。然而，数字化仪除了测量x、y两维坐标值外，还可以测量笔的倾斜度和压力，采集了大量的数据，而对指尖在空间书写字符所获得的数据进行处理的研究还从未有人做过。我们试着输入和识别一个简单的符号，比如圆圈和复选标记。结果表明，它能够通过两个端点之间的距离和整个笔画长度的比例来准确地识别两个符号。10名测试者使用三维指点设备分别写下100个字符和签名。总数据量超过10，000个字符，我们能够为未来的研究提供有价值的有用数据库。注：PHANToM是SensAble Technologies公司的注册商标。

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.