FREEHAND DRAWING SYSTEM USING A FUZZY-LOGIC CONCEPT

A pen-based drawing system using a fuzzy logic concept has been develo ped. The Fuzzy Freehand Drawing System (FFDS) can infer human drawing intentions and generate the corresponding geometric primitives and smo oth B-spline curves. FFDS is a pen-based real time drawing system. On the basis of drawing position, speed, and acceleration information, FF DS establishes geometric primitives. Unintentional points are eliminat ed using fuzzy filtering rules. FFDS analyses the drawn curve with ref erence models, and obtains the corresponding possibilities. Fuzzy infe rence rules are used to recognize the correct model. Finally, the corr ect geometric primitives are drawn automatically.