Machine vision · Traceability
Traceability starts with reliable reading. We define the code, surface, speed, lighting and acceptance criteria. Reading integrates with PLC, MES or ERP and is recorded for audit.
Code, label and character reading and verification to know what a part is and what happened to it.
What it solves
Comparison
Reading a code is not the same as verifying the label is correct. The choice depends on surface, contrast and speed.
| Criterion | 1D/2D code | OCR | OCV |
|---|---|---|---|
| What it does | Decodes a printed or marked code | Reads variable characters | Verifies the text is the expected one |
| Best for | Traceability, serialization and logistics | Batches, dates and serials | Label control and print errors |
| Limit | Contrast, size and code quality | Font, contrast and variation | Needs reference and comparison criteria |
In detail
The code must be visible before it can be read. Material, marking, size and contrast define camera and lighting.
Line speed and exposure time define whether the image is sharp. Trigger and encoder are part of the project.
Traceability does not end at reading: what was read, when and with what result must be stored. Evidence is part of the system.
Choosing the camera before testing the code, not measuring print quality or not planning window cleaning. Reading fails more because of the surface than the software.
Industries
Related guides
Frequently asked questions
OCR reads characters; OCV verifies the text is the expected one. OCV is used to prevent incorrect labels or print errors.
Yes, but marking contrast and orientation change lighting and camera. It is validated with the real part and selected reader.
A retry, reject or manual-read criterion is defined. The cell logs the event so traceability is not lost.
Yes, with trigger, encoder and compatible exposure times. Speed and part height define the configuration.
Yes. What data is sent, in what format and what happens on a communication failure are defined. The interface is agreed with IT.
No. It depends on material, marking and speed. Poorly chosen light can make a readable code unreadable.
With a sample of real parts and codes, including borderline cases. Read rate is measured and acceptance criteria documented.
Yes. A trial with the real part and code is the recommended step before quoting the full station.
Next step · Gist Point
Send photos or a video and we will define whether a vision trial, an assessment or a complete cell makes sense.