線上手寫中文字錯誤偵測與回饋系統

Abstract

隨著近年來教育科技的演進，有越來越多教育相關的平台或應用程式被開發出來，甚至在教學現場被使用。然而在台灣的國小中，大多數師生仍然都使用傳統的生字簿，來進行國語生字的書寫練習及批改，往往佔去老師大量的時間，且學生進行書寫練習後，也需要等待老師批改完成才能得到回饋，並沒有辦法非常的即時。而市面上仍幾乎不見具有生字批改功能的系統或者應用程式。故本研究建構了一個能夠即時偵錯並給予回饋的生字書寫練習及批改的系統。在過去的線上手寫中文字錯誤偵測的研究基礎上，本研究提出了不需要補點即可進行切割區段的方法，以及能夠同時處理缺失筆畫和多餘筆畫的筆畫匹配方法；同時，本研究也提出了新的筆畫位置偏移的偵測方法，以及過去未曾做過的筆畫相觸錯誤的偵測方法。

With the evolution of educational technology recently, more and more education platforms or applications have been developed, or even employed in the classroom. At elementary schools in Taiwan, however, traditional Chinese characters exercise books are used for students to practice their handwriting of Chinese characters, and then would be gathered for the class teacher to correct. This cause a lot of time of the teachers, since they have to check the students handwritten characters one by one. Also, students have to wait for the correcting after they finish their practicing, and hence are not able to get feedback of the writing immediately. At the same time, there are hardly any applications or systems with (Chinese characters) handwriting correcting functions. Therefore, an on-line handwritten Chinese character error detection and feedback system is proposed. Based on the past study on handwritten Chinese character error detection, we proposed a method of dividing substrokes without interpolation needed, and a modified stroke matching method using Hungarian algorithm, which can deal with lost strokes and redundant strokes at the same time, but with Polynomial time complexity. Also, we proposed a new method of detecting region relational error of strokes, and a new method of detecting intersecting errors, which is less discussed in the past.