🏷️ LUMA Offline Label Inspection System

Product — Label Inspection

AI-Powered Label Inspection System

Catch defects before labels reach your customer — ensuring only flawless labels leave your facility.

Fully AI-powered workflow and real-time inspection deliver unmatched precision, while giving operators complete control and flexibility. An intuitive, operator-focused UI ensures the operator stays focused on quality control and not software handling.

Overview

The LUMA Label Inspection System is YantraVision's AI-powered offline inspection solution that detects printing and material defects on labels at speeds up to 150 m/min with a 4K Tri-Linear CCD camera, identifying defects as small as 100 µm × 100 µm (0.01 mm²) across eight categories including missing print, colour deviation, registration errors, and barcode defects.

The Challenge

Traditional systems often misidentify acceptable variations as defects, leading to high setup time and triggering false alarms. This forces operators to spend time on unnecessary checks, reducing productivity and yield, and making the systems less reliable.

The LUMA Advantage

LUMA overcomes these challenges with reduced false defects, low setup time, and high defect detection accuracy — delivering higher yield and reliable quality assurance that traditional systems fail to achieve.

Equipped with high-resolution line-scan cameras, the system performs 100% inspection of every label — identifying print defects, colour deviations, registration errors, missing text, smudges, substrate and matrix flaws. It supports a wide range of substrates and integrates seamlessly with all unwinders and rewinders in market. Designed for industries where accuracy is critical — pharmaceuticals, food & beverage, cosmetics, and industrial manufacturing.

Where LUMA Fits

Artwork Created

→

LUMA Proof Reader
verifies proof vs PDF

→

Approved for Production

→

LUMA Label Inspection
100% inline inspection

Inspection vs Text Proofing

Which LUMA is Right for You?

	LUMA Proof Reader →	LUMA Label Inspection
When	Before production run	After printing (rewinder stage)
Input	First-press proof vs PDF master	Printed web at slitter/rewinder
Speed	≤ 4 min per sheet	Up to 150 m/min
Best For	Prepress QA, artwork approval	100% inspection before dispatch

Defects Identified

Hover over a defect to learn more

Eight defect types detected across every label — from missing print to substrate flaws.

Features & Specifications

Key Features

🧠 AI-Driven Detection & Deep Learning ▼

Advanced AI and adaptive deep learning models accurately detect and classify defects while continuously learning from past inspections — reducing false positives, improving accuracy, and minimizing yield loss over time.

🎯 Critical Area-Based Defect Classification ▼

Define critical and non-critical areas on the artwork, and classify defects accordingly — ensuring that defects in critical areas are prioritized while non-critical variations are handled appropriately.

🔍 Masking & Regions of Interest (ROI) ▼

Define inspection zones to focus only on relevant areas of the label while ignoring liner, carrier, or non-print regions — reducing false detections and improving inspection efficiency.

🔥 Hotspot View ▼

Displays defects in a heat-map style visualisation, instantly highlighting critical zones across the label web for faster identification and correction of defects than conventional inspection views.

🔲 Matrix Monitoring ▼

Grid-based layout for complete coverage of the label web. Operators can track multiple zones simultaneously with clarity and precision. This ensures no area is overlooked, even in high-speed production.

💡 Advanced Illumination ▼

High-intensity LED dome lighting — rated for 20,000+ hours of continuous operation — ensures consistent, high-quality images regardless of substrate type or environmental lighting conditions.

📊 Real-Time Processing & Comprehensive Reporting ▼

Processing at full 150 m/min web speed with a 4K Tri-Linear CCD camera (8K add-on feature), the system automatically generates detailed inspection reports with defect counts, types, positions, and production quality statistics. Fully customisable to meet specific customer requirements.

💾 Job Storage & Recipe Management ▼

Store and recall job settings instantly, allowing quick setup for repeat orders and reducing changeover time.

📄 PDF & Artwork Verification ▼

Verifies the printed label against the approved PDF reference model, catching plate errors or file mismatches before they reach the customer.

🔁 Repeat-Job & Master Compare ▼

Saves a master reference image for each job and automatically compares repeat runs against it, confirming every re-run matches the original approved production.

🎨 Colour Monitoring (Delta-E) ▼

Tracks colour density and Delta-E drift across the run, flagging colour shift before it becomes a customer complaint.

🏷️ Barcode & Variable Code Inspection (Add-on) ▼

Available as an add-on feature — reads and verifies 1D/2D barcodes and variable/serialised codes for readability and correctness.

📷 8K Camera Option ▼

Available as an add-on feature — upgrades from the standard 4K Tri-Linear CCD camera to 8K for higher-resolution capture on demanding jobs.

Specifications

Inspection Speed150 m/min

Camera Technology4K Tri-Linear CCD (8K add-on feature)

Resolution / Min. Defect Size100 µm × 100 µm (0.01 mm²) at 4K

Field of View350 mm / 450 mm (4K)

Light SourceLED Diffuse Dome Light, LED Backlight

Inspection TypeOffline

PDF / Artwork VerificationYes — PDF vs Reference Model

Repeat-Job / Master CompareYes — PDF compare with repeat jobs

Barcode / Variable Code InspectionAdd-on feature

Colour MonitoringDelta-E monitoring

SubstratesMetallic foils, films, synthetic materials, matte surfaces

Offline Inspection Solution

Primarily integrated with slitting rewinders, the system performs a final quality check before product delivery. It automatically stops the rewinder at the exact position of any detected defect, allowing the operator to remove and replace the faulty label. For enhanced efficiency, operators can also choose to bypass minor defects that do not require stopping the machine.

Frequently Asked Questions

❓What is the LUMA Label Inspection System?▼

LUMA is YantraVision's AI-powered offline label inspection system that performs 100% inspection of every label at speeds up to 150 m/min using a 4K Tri-Linear CCD camera (8K add-on feature). It detects defects as small as 100 µm × 100 µm (0.01 mm²) at 4K across eight categories — missing print, colour deviation, registration error, text error, smudge, die-cut, barcode/QR, and substrate flaws.

❓What defects can LUMA detect?▼

LUMA detects eight defect categories: missing print, colour deviation, registration errors, text errors, smudge and scum marks, punch-out and die-cut defects, barcode and QR code errors, and substrate flaws such as tears, wrinkles, and contamination.

❓What is the minimum defect size LUMA can detect?▼

LUMA detects defects as small as 100 µm × 100 µm (0.01 mm²) at 4K resolution, using a 4K Tri-Linear CCD camera (8K add-on feature for higher resolution). The system supports field-of-view configurations of 350 mm and 450 mm to match different label widths.

❓How does LUMA reduce false positives?▼

LUMA uses adaptive deep learning models that continuously learn from past inspections, progressively reducing false detections. Operators can define critical and non-critical areas, set tolerance thresholds, and configure masking zones to focus inspection on relevant regions — minimising unnecessary alarms while maintaining detection accuracy.

❓What substrates can LUMA inspect?▼

LUMA inspects a wide range of substrates including metallic foils, synthetic films, matte surfaces, and standard paper labels. The advanced LED dome lighting ensures consistent image quality regardless of substrate reflectivity or surface finish.

❓Does LUMA integrate with existing rewinders?▼

Yes. LUMA is designed to integrate seamlessly with all slitter-rewinders on the market. The system automatically stops the rewinder at the exact position of a detected defect for operator review, with the option to bypass minor defects to maintain production efficiency.

❓What industries benefit from LUMA label inspection?▼

LUMA serves industries where label accuracy is critical — pharmaceuticals (regulatory compliance, serialisation), food and beverage (ingredient labelling, allergen declarations), cosmetics (brand consistency), and industrial manufacturing (safety labels, hazard markings).

Get Started

Ready to eliminate label defects before they reach the market? Get in touch with the YantraVision team.

Contact Sales

Last updated: July 2026