A Pen Gesture-Based Editing System for Online Handwritten Objects on a Pen Computer

In our system, handwritten characters (which include other kinds of objects written in a text line) and figures can be edited by using pre-defined pen gestures on a pen computer, and handwritten characters around the edited objects are automatically aligned. The prototype system has three modes: character writing, figure drawing, and editing modes. In the character writing mode, a user can write any characters along the ruled line in the main window. In the figure drawing mode, any objects can be drawn without limitation. In the editing mode, a user can edit handwritten objects by using the pre-defined pen gestures. Among the processes, the system does not permit an overlap area between characters and figures. In our experiments with objects handwritten by 10 test users, a good result was obtained.