Rule-based inspection of printed green ceramic tape
- Oak Ridge National Lab., TN (United States)
- Coors Electronic Package Co., Chattanooga, TN (United States)
A template-based vision system for the 100% inspection of printed flaws on green ceramic tape has been developed. Design goals included a requirement for the detection of flaws as small as two thousandths of an inch on parts up to 8 by 8 inches in size. The inspection engine is a Datacube, Inc., MV200 pipeline processor. As each part is inspected, four 2K by 2K pixel quadrant images are stitched together to construct a single 4K by 4K pixel image with the aid of multiple fiducials located in each quadrant. The part fiducial locations, mask image, and punched-hole position data are generated, beforehand, from CAD designs using a defect map editor (DME), a preprocessing software package developed for the PC. The DME also generates a part ``defect map``. Each unique structure in the printed pattern is defined as an object. Objects are grouped into user-defined categories such as die pads, contact fingers, traces, and electrolysis buses. The map is used during the runtime inspection to associate each detected defect with an object group and a particular defect specification for that group. Repeat defects are optionally tracked for up to three consecutive parts.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 634077
- Report Number(s):
- ORNL/CP-96066; CONF-980117-; ON: DE98002728; CRN: C/Y-12--92-0078; TRN: AHC2DT01%%88
- Resource Relation:
- Conference: BIOS `98: an international symposium on biomedical optics, San Jose, CA (United States), 24-30 Jan 1998; Other Information: PBD: Jan 1998
- Country of Publication:
- United States
- Language:
- English
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