In brief

Agree acceptance evidence for the inspection decision and the complete result-to-product action before the retrofit is installed. Use identified good, defective and marginal samples, record missed defects and rejected good samples separately, and check the agreed response to unavailable results or line interruptions. Keep the accepted setup and outstanding actions in the interface and handover record.

For in-line inspection using vision upgrades for existing production lines, 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 — Vision Inspection Retrofits

Plan vision inspection retrofits 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

Give each challenge sample an agreed expected decision and record the actual decision under the tested recipe and presentation. Keep missed defects separate from rejected good samples; record marginal or disputed cases for review rather than treating them as proof of a universal limit.

Realistic range

Cover the agreed product and presentation range, spacing, normal stops and restarts. Include controlled checks of the agreed response to inspection unavailability and reject or collection-route interruptions, using the approved test plan and responsibilities for the existing line.

Effect on the system

Link acceptance to the installed physical setup, recipe revision and result-to-product action. Record remaining limitations, outstanding actions and who can accept, hold or authorise controlled restoration; installation completion alone is not evidence that production release criteria have been met.

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 vision inspection retrofits.
  3. What is the difficult condition?Include the slow, reflective, flexible, dirty, damaged, marginal or uncommon case that your system must still handle.
  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 vision inspection retrofits 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 Vision Upgrades for Existing Production Lines

For Vision Inspection Retrofits Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for visible defect or measurement definition for vision upgrades for existing production lines. That lets us compare options against your real production rather than one nominal value.

Question 2

Good, Bad and Marginal Sample Range

For Vision Inspection Retrofits 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 Vision Inspection Retrofits 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 Vision Inspection Retrofits 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 Vision Inspection Retrofits 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

For Vision Inspection Retrofits Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for false-accept, false-reject and challenge criteria. That lets us compare options against your real production rather than one nominal value.