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Proceedings Paper

Sub-Pixel Interpolation With Charge Injection Devices (CID's)
Author(s): Joseph Carbone
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Paper Abstract

Automated vision applications including printed circuit board inspection, parts measurement, and article positioning and tracking rely upon accurate determination of object edges. With most solid state sensors this is limited by the actual sensor resolution (ie. total number of pixels). Sub-pixel interpolation can be performed on the video output, but the accuracy of such calculations is highly dependant upon the imager pixel topology. The large active (light sensitive) area and contiguous nature inherent to the CID pixel structure is well suited to sub-pixel interpolation techniques. As a result, higher effective resolution can be obtained from an existing format CID sensor. The CID pixel is examined. Factors affecting the accuracy of this interpolation are identified. Estimates of the sub-pixel interpolation capability of some CID cell configurations are provided.

Paper Details

Date Published: 23 May 1989
PDF: 10 pages
Proc. SPIE 1071, Optical Sensors and Electronic Photography, (23 May 1989); doi: 10.1117/12.952509
Show Author Affiliations
Joseph Carbone, CID Technologies Inc. (United States)


Published in SPIE Proceedings Vol. 1071:
Optical Sensors and Electronic Photography
Morley M. Blouke; Donald Pophal, Editor(s)

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