Method for localizing and isolating an errant process step
- Knoxville, TN
A method for localizing and isolating an errant process includes the steps of retrieving from a defect image database a selection of images each image having image content similar to image content extracted from a query image depicting a defect, each image in the selection having corresponding defect characterization data. A conditional probability distribution of the defect having occurred in a particular process step is derived from the defect characterization data. A process step as a highest probable source of the defect according to the derived conditional probability distribution is then identified. A method for process step defect identification includes the steps of characterizing anomalies in a product, the anomalies detected by an imaging system. A query image of a product defect is then acquired. A particular characterized anomaly is then correlated with the query image. An errant process step is then associated with the correlated image.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-96OR22464
- Assignee:
- Ut-Battelle, LLC (Oak Ridge, TN)
- Patent Number(s):
- US 6535776
- OSTI ID:
- 875118
- Country of Publication:
- United States
- Language:
- English
Content based image retrieval systems
|
journal | January 1995 |
A knowledge-based approach for retrieving images by content
|
journal | August 1996 |
Indexing pictorial documents by their content: a survey of current techniques
|
journal | February 1997 |
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