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8 November 1984 A Fiber Optic/CCD System For Automated Capture Of Drawings
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We discuss the development of a unique optical system intended for capturing drawings to be used in CAD systems. The scanhead consists of two linear rows of optical fiber; one row provides illumination to the drawing surface being scanned, while the other adjacent row transmits the scattered light to a CCD camera for sensing. The analog video signal from the camera is thresholded to binary black/white, noise filtered, and compacted into run-length-coded format for storage as a raster file. The drawing is sequentially stepped and scanned to capture the entire drawing. Our work shows that this system has some unique optical features. In particular, it has characteristics of a transmissive system rather than reflective as might first be expected.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael R. Molnar and Thomas A. Booth "A Fiber Optic/CCD System For Automated Capture Of Drawings", Proc. SPIE 0501, State-of-the-Art Imaging Arrays and Their Applications, (8 November 1984);

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