Normal-only rail-weld novelty with operator review
A new rail-weld morphology can depart from normal examples without matching a known defect name. Visible novelty is not a structural safety result.
Retain the new surface region and score evidence as a record for specialist review. Do not infer an anomaly type, internal defect or load capacity from the image.
- 01 Normal reference
- 02 New image
- 03 Local comparison
- 04 Score threshold
- 05 Send for review
Select the illustrative reference gallery of normal examples only.
- Local anomaly score
- —
- Above-threshold area
- —
- Illustrative score threshold
- —
Scenes are illustrative simulations; they are not customer references or performance guarantees.
Solution approach
Local features of normal examples are compared with the new ROI. Raw evidence, normal reference and a continuous anomaly map appear separately; the score threshold is not a defect class. Scan the rail surface and retain a separate normal weld-patch gallery. Show local departure from normal in the score map.
Process steps
- 01
Normal reference
Select the illustrative reference gallery of normal examples only.
- 02
New image
Image the new sample under the same lighting and registration conditions.
- 03
Local comparison
Show local feature deviation as a continuous heatmap.
- 04
Score threshold
Show the local score and above-threshold area as separate criteria.
- 05
Send for review
Hold an anomalous example for the operator without inventing a defect type.
Related applications
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