Semantic understanding technology of sketch type-stroke in concept design.

Through the study on drawing behavior and habit of designers, the paper gave a sketch understanding method which combined stroke semantic feature and geometric feature. The paper's purpose was to build a hand-drawn interface system for concept design personnel in the creative development research. According to conceptual sketching process, the paper extracted strokes types, and analyzed the semantic features. By the concept definition of "bending threshold" and "pressure strength threshold", it used threshold detection to determine the strokes types, which could be used into rough stages. The results made different stages, different types of stroke function effectively classified and auxiliary recognized. The designers could choose the way between drafting interface and understanding interface by man-machine interactive function in the sketching process. The test result shows that this kind of method not only can get a hand-drawn effect, but also shall not prevent the designer's creative thinking process and can meet the personalized drawing habit. [ABSTRACT FROM AUTHOR]