The technique system of intelligent sketching is presented, including the pen based natural gesture interface, free-hand sketching input, sketching recognition and sketch based solid modeling.
构建出智能草图的技术体系，包括基于单笔划的自然手势界面，徒手草图输入，草图识别与基于草图的几何建模。
No photography - free hand sketching only.
没有摄影- 自由随意绘画素描。
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