In brief

Agree textile acceptance evidence before the trial: the fabric and defect range, accepted good references, presentation, checking method and limits for missed defects and rejected good material. Include material-location recovery and the agreed handling of uncertain results. Start with the visible-decision definition.

For in-line inspection using textile surface and pattern inspection, describe the realistic range and how changes in false-accept, false-reject and challenge criteria affect the result you need.

On the production floor

Turn your production information into clearer decisions — Textile Surface and Pattern Inspection

Plan textile surface and pattern inspection around representative good, bad and marginal samples, line presentation, lighting, reject handling and challenge criteria. Discuss an optical feasibility trial with Oxford Vision Systems. Use this guide to resolve false-accept, false-reject and challenge criteria before it limits the final system.

Discuss your application
What to record

False-Accept, False-Reject and Challenge Criteria: condition, range and effect on your process

Current condition

Record each sample or evaluated material section with its fabric identity, agreed reference decision, observed result, setup revision and production condition. Keep the checking method and amount examined with the results so a percentage is not detached from what was actually tested.

Realistic range

Cover the normal constructions, colours, patterns and batches expected in scope, plus agreed marginal defects and acceptable variation. Include representative tension, folds, edge movement, speed and relevant stops; state any condition or accessible area not evaluated.

Effect on the system

Check the complete agreed response as well as the image decision. Follow a marked location through the intended downstream route and verify its roll or piece identity, coordinate reference and required action. Keep uncertain position or unavailable results separate from a confirmed finding.

Before you contact us

Five questions about false-accept, false-reject and challenge criteria for your application

  1. Who can confirm this information?Identify the person responsible for false-accept, false-reject and challenge criteria in production, quality, engineering or operations.
  2. How representative is the sample?Include age, supplier, batch, environment and upstream process state where they affect textile surface and pattern inspection.
  3. What is the difficult condition?Challenge good texture or pattern features that resemble defects, and known defects that become difficult to see under permitted presentation changes. Record both types of error and unresolved cases without treating untested conditions as passed.
  4. How will you judge the result?Agree the method, repetitions, acceptable range, result record and the response if the observed result falls outside the agreed range.
  5. What else must be coordinated?Your final textile surface and pattern inspection scope must also account for recipe, reject and line-control interfaces, false-accept, false-reject and challenge criteria, current regulations and the conditions at your site.
Connected details

Review false-accept, false-reject and challenge criteria as part of the complete system

Question 1

Visible Defect or Measurement Definition for Textile Surface & Pattern Inspection

For Textile Surface and Pattern Inspection Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for visible defect or measurement definition for textile surface & pattern inspection. That lets us compare options against your real production rather than one nominal value.

Question 2

Good, Bad and Marginal Sample Range

For Textile Surface and Pattern Inspection Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for good, bad and marginal sample range. That lets us compare options against your real production rather than one nominal value.

Question 3

Part Presentation and Production Speed

For Textile Surface and Pattern Inspection Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for part presentation and production speed. That lets us compare options against your real production rather than one nominal value.

Question 4

Optics, Lighting and Environmental Conditions

For Textile Surface and Pattern Inspection Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for optics, lighting and environmental conditions. That lets us compare options against your real production rather than one nominal value.

Question 5

Recipe, Reject and Line-Control Interfaces

For Textile Surface and Pattern Inspection Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for recipe, reject and line-control interfaces. That lets us compare options against your real production rather than one nominal value.

Question 6

False-Accept, False-Reject and Challenge Criteria

Report missed known defects and rejected acceptable material separately, grouped by fabric, defect category and presentation. Agree how much material or how many examples each result represents, who reviews borderline outcomes and what must be repeated after a setup change.