Compared with paper drawing recognition method, research into electronic drawing recognition has not been widely spread.

与纸质图纸的扫描识别研究相比较，对电子版图纸识别的研究工作还不够深入。

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This means that a paper drawing can be scanned, line artwork automatically recognized and represented in a vector format that then can be imported to your CAD or drawing program.

也就是说，它可以扫描图纸，线条会被自动识别并转换为矢量格式，以能够方便的导入你的CAD绘图程序中。

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He says he likes the cleanliness of ink drawing on paper.

VOA: special.2009.09.02

There he opened it out on the table (reserved for entertaining the Boss and celebrating special family occasions) and carefully lifted the Lindbergh portraits from the tracing paper protecting each drawing and lined them up on the tabletop.

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He had big bulldog clips, a masonite board, yellow Ticonderoga pencils, erasers, sketchpads, drawing paper equipment that he stored in a grocery carton at the bottom of our bedroom closet and that my mother, when she was cleaning, wasn't permitted to disturb.

NPR: Roth Rewrites History with a 'Plot Against America'

Designed for rough concepting and creative brainstorming, Inkling bridges the gap between paper sketching and digital drawing by giving users at the front end of the creative process a way to rough-out ideas with real ink on paper and capture their concepts digitally so that they can be later refined on their computer.

ENGADGET: Wacom Inkling smart pen does drawing the old-fashioned way -- sort of (video)