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AI / ML

Defect Detection

Production
PyTorchCNNOpenCVPythonAWSDocker
Defect Detection preview

Built at TSMC to automate visual inspection of semiconductor wafers during advanced node manufacturing. The pipeline ingests high-resolution wafer images, preprocesses them through a custom augmentation pipeline, and classifies defect types using a fine-tuned ResNet-50 backbone. Replaced a manual QA process that was bottlenecking production throughput on critical layers.

97.3% classification accuracy across 12 defect categories

Custom data augmentation pipeline for wafer-specific noise patterns

Reduced manual inspection time by 60% on critical layers

Deployed on AWS with auto-scaling inference endpoints

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Joey Schnepel — Phoenix, AZ — 2026