# Accurate Localization of Defective Circular PCB Mark Based on Sub-Pixel Edge Detection and Least Square Fitting

> Research article (2019 IEEE 8th Data Driven Control and Learning Systems Conference (DDCLS), 2019) · cited 13× · AI/ML

**Wikidata**: [openalex:W2989569326](https://www.wikidata.org/wiki/openalex:W2989569326)  
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