Example · AI & machine learning

Defect detection with scarce labelled data

Cormorant needed to detect rare manufacturing defects from camera images, but had only a few hundred labelled examples of each defect class. Off-the-shelf models and standard augmentation didn't generalize.

Cormorant Vision (fictional). This is a fictional educational example. It is not a customer claim and is not tax advice. It illustrates how to structure and reason about a SR&ED narrative — not text to copy into a claim.

Technological uncertainty (T661 line 242)

Weak

We used machine learning to build a defect-detection model, which was challenging with limited data.

Strong

It was uncertain whether acceptable detection accuracy on defect classes with fewer than 300 labelled samples was achievable. Standard transfer learning and augmentation had been tried and produced high false-negative rates, and it was unknown whether a synthetic-data or few-shot approach could close the gap without introducing artifacts the model would learn.

The weak version says 'ML is hard'. The strong version pins the uncertainty to a measurable condition (few-shot, <300 samples) and states what was already ruled out.

Technological advancement (T661 line 246)

Weak

We built a model that detects defects with good accuracy.

Strong

We advanced our understanding of few-shot defect detection: a physics-informed synthetic-augmentation pipeline combined with a contrastive pre-training step reduced false negatives materially in controlled tests, while we established that naïve GAN-generated samples degraded precision — a result that redirected the approach.

The strong version reports the knowledge advance and a specific negative result, not a product milestone.

Evidence matrix

What backs a claim like this

Each claimed element ties to a source that shows it. This is the traceability a review tests.

SourceWhat it shows
Experiment logs & metricsThe systematic runs, hypotheses tested, and per-class accuracy over time
NotebooksThe augmentation and pre-training experiments, including the discarded GAN approach
Model-version historyWhich changes moved the metric, tying effort to result
Commit historyThe dated iteration behind the experiments

The takeaway

Claim the experiments, not the model. The eligible work is the systematic investigation into what would work under your constraints — including the paths that didn't.

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