A surface-inspection design begins with the defects that must be detected, permitted normal variation and cases needing manual review. This article describes a proposed inspection workflow. Compatibility, defect-detection performance and sustained operation require testing with the target equipment and samples.
Establish inputs and decision rules
Define product types, surface materials, imaging, processing cycle time, location variation, defect dimensions and severity. Provide conforming, defective, borderline and unusable-image samples. Labels must trace to decision criteria. Keep uncovered product types and defect categories marked as pending verification.
| Module | Scope | Possible deliverables |
|---|---|---|
| Sample management | Origin, batch, labels and data-purpose separation | Sample inventory and labeling rules |
| Location and regions | Part alignment and inspection-region mapping | Alignment parameters and coordinates |
| Image quality | Usability, failure and recapture conditions | Check items and state definitions |
| Defect decision | Categories, thresholds and evidence | Model configuration, APIs and result fields |
| Manual review | Suspected defects, disputed results and feedback | Review records and change procedures |
Make results traceable
Associate results with product or capture identifiers, image times, product types, model versions and parameter versions. Use explicit fields for defect locations, evidence images, missing results and failure states. Retain original results, reasons for review changes and associated versions. Later revisions must preserve original acceptance records.
Pilot and accept in stages
Begin with samples under fixed conditions, then extend batches, product types, location variation and concurrent workloads. Record product-level missed defects, false alarms on conforming items, review-required proportions, processing times and recovery behavior separately. Label training, tuning and acceptance data by purpose to avoid biased conclusions from reuse.
Delivery and operating scope
Agreed deliverables may include configuration, APIs, deployment instructions, agreed source code, test records and review tools. Check third-party library and model licences against their sources. Changes to cameras, lighting, materials, processing cycle time or defect definitions require reassessment of sampling and verification needs.
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