Label inspection for identity, position and print quality

Inspection overview

Control label application and product identity

Curved containers, transparent labels, metallic foils and variable artwork create very different imaging requirements. We select lenses and lighting to separate the label edge, printed content and container background at production speed.

Pattern matching, OCR, OCV, barcode reading and dimensional tools can be combined within one recipe. Results may be tied to upstream product data or a selected job to reduce the risk of the wrong label variant entering production.

Checks that can be combined

The final inspection set is selected from the visible features, risk, product presentation and achievable image resolution.

• Label presence and count
• Horizontal and vertical position
• Rotation, skew, flagging and wrinkles
• Front-to-back label relationship
• Correct artwork or product variant
• Date, lot and variable print verification
• 1D barcode and 2D code readability
• Tamper, neck, top or base label presence

Application details we review

Early clarity on these points helps avoid false rejects, blind spots and mechanical changes late in the project.

• Label material, transparency and reflectivity
• Container curvature and rotation
• Required edge-position tolerance
• Artwork change frequency
• Code quality and printer variation
• Full-wrap or multi-panel coverage

Build the inspection around approved label samples

Artwork masters, production labels and known defects help define the correct match regions, code rules and position tolerances.

Feasibility work establishes the camera view, lens, light, exposure and image-processing approach. We then define the enclosure, conveyor changes, controls, operator interface and rejection needed for production.