Garment factory sewing floor with rows of operators at industrial sewing machines
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Machine Vision · Apparel

Automated Garment Measurement and Stitch Inspection

Automated garment measurement checks every point of measure against the spec sheet in seconds, using a camera over a measuring table. Stitch and seam inspection finds skipped stitches, puckering, open seams, print and embroidery faults. Together they give apparel QC consistent numbers and images instead of tape and judgement.

Garment Measurement & Stitch QC at a glance

What it measures
Points of measure such as chest, waist, hip, length, sleeve, inseam and rise, compared with the spec sheet and tolerances.
What it finds
Skipped and broken stitches, puckering, open seams, uneven stitch density, print and embroidery faults, stains and holes.
Where it sits
End-of-line QC, final inspection before packing, or the buyer audit room.
What you get
Measurement reports per garment and size, defect images, and data for AQL inspection and buyer queries.
Definition

What is automated garment measurement and stitch inspection?

Automated garment measurement uses a calibrated camera above a measuring table to find the garment outline and landmarks, then calculates each point of measure and compares it with the spec sheet tolerance. An operator lays the garment flat, the system measures it, and the result is saved against style, size and order.

Stitch and seam inspection uses close-up imaging to check seams for defects that matter to buyers: skipped or broken stitches, uneven stitch density, puckering, open seams and seam slippage, as well as print, embroidery and stain faults. Stitch and seam types are defined in ISO 4915 and ISO 4916, and in ASTM D6193.

Both support, rather than replace, the AQL inspection that buyers specify, typically based on ISO 2859-1 sampling. They make each inspected garment faster to check, the results consistent between inspectors, and the evidence available when a buyer questions a shipment.

Single needle industrial sewing machine on its table in a workshop
An industrial lockstitch machine. Seam quality from machines like this is what stitch inspection checks, seam by seam.
The problem

Why manual measurement and inspection are a bottleneck

  • Measuring many points of measure by tape is slow and varies between inspectors.
  • Soft, stretchy fabrics give different results depending on how the tape is held.
  • Small seam defects are missed late in a shift.
  • Measurement sheets are filled in by hand and rarely analysed.
  • Buyer disputes are hard to settle without images and data.
How it works

How garment measurement and stitch inspection works, step by step

STEP 1LaySTEP 2ImageSTEP 3MeasureSTEP 4CompareSTEP 5Report
  1. STEP 1

    Lay the garment flat

    The operator places the garment on a backlit or contrasting measuring table and selects the style and size, or scans the bundle ticket.

  2. STEP 2

    Capture the garment

    A calibrated overhead camera captures the whole garment; close-up cameras or a handheld device capture seams when stitch inspection is needed.

  3. STEP 3

    Find points of measure

    Software finds the outline and landmarks and calculates each point of measure in millimetres.

  4. STEP 4

    Compare with the spec

    Each measurement is compared with the spec sheet tolerance, and seam images are checked for defects.

  5. STEP 5

    Report and record

    Pass or fail per point, defect images and a full report are saved per garment, size and order.

The technology

Methods that make it reliable

Calibrated overhead imaging

A camera calibrated against a reference grid converts pixels into millimetres across the whole measuring table, correcting for lens distortion.

Landmark detection

Deep learning finds the landmarks used in each point of measure, such as shoulder points, armholes, hem and waistband corners, for each garment type.

Spec sheet comparison

Measurements are compared with the tech pack tolerances for the style and size, with results by point of measure.

Seam close-up imaging

High-resolution close-ups of seams reveal stitch spacing, skipped stitches, puckering and open seams.

Deep learning defect detection

Models trained on good and defective examples find print, embroidery, stain and fabric faults on the garment surface.

Capabilities

What it can check

  • Chest and bust
  • Waist and hip
  • Body and sleeve length
  • Inseam and rise
  • Shoulder and neck width
  • Symmetry left to right
  • Skipped and broken stitches
  • Stitch density
  • Puckering
  • Open seams and slippage
  • Print and embroidery faults
  • Stains and holes
Industries

Where it is used

Apparel exportersKnitwear and activewearIntimate apparelDenim and bottomsBuying offices and third-party inspection
Sample projects

How a project is scoped

Two example project scopes showing how the station, the checks and the outputs are defined. Every plant is different, so the final configuration is confirmed after a feasibility study on your own parts.

Example scope · Knitwear

Measurement station at final QC

The situation: A knitwear factory measures garments by tape at final inspection, and buyers question measurements on stretch fabrics.

Station
Backlit measuring table with a calibrated overhead camera
Measures
All points of measure on the spec sheet for each style and size
Output
Pass or fail per point, measurement report per garment
Extra
Size-by-size measurement trends sent back to cutting and sewing
Example scope · Bottoms

Seam inspection before packing

The situation: A bottoms factory receives buyer complaints about open seams and skipped stitches found after shipment.

Station
Inspection table with close-up seam cameras
Detects
Skipped stitches, open seams, puckering and uneven stitch density
Output
Defect images and pass or fail per garment
Extra
Defect rates by line and operation to target training
What is in the system

Typical components

  • Calibrated overhead camera
  • Backlit or contrasting measuring table
  • Close-up seam cameras
  • Calibration grid
  • Industrial PC or workstation
  • Bundle ticket or barcode scanner
  • Measurement and defect reporting software

Cameras and lenses, supplied locally

Industrial cameras, lenses, line-scan cameras and code readers are available through our machine vision catalog, quoted with delivery to Sri Lanka. We select the hardware for your application during the feasibility study.

Browse the hardware catalog
How we work

Proven on your parts before you commit

Every product, surface and line behaves differently under a camera, so every project starts with evidence from your own material.

  1. PHASE 1

    Discovery

    A site visit to understand your product, line speed, quality criteria and where the check should sit.

  2. PHASE 2

    Feasibility study

    We image your good and defective samples and show what the system can reliably detect. This is the go or no-go.

  3. PHASE 3

    Pilot station

    One station on one line, running beside your inspectors until results match and your team trusts them.

  4. PHASE 4

    Rollout and support

    More lines, integration with your PLC and systems, and local support from our Sri Lankan engineering team.

FAQ

Garment Measurement & Stitch QC: common questions

How accurate is camera-based garment measurement?

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Accuracy depends on calibration, camera resolution, table size and how consistently the garment is laid flat. The camera removes tape-holding differences, but laying the garment is still a manual step, so we set up the table and procedure for your styles and agree the measurement tolerance with you.

Can it measure stretch fabrics?

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Yes, and it often helps most there, because a camera does not pull the fabric as a tape can. The garment still needs to be laid flat without stretching, which the table and procedure are designed to support.

Does it work with our spec sheets?

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Yes. Points of measure and tolerances are taken from your tech packs or spec sheets for each style and size, so results are reported in the same terms your buyers use.

Can it find stitching defects?

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Yes, with close-up imaging of the seams. It finds skipped and broken stitches, uneven stitch density, puckering and open seams. Stitch and seam types follow ISO 4915, ISO 4916 and ASTM D6193.

Does it replace AQL inspection?

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No. Buyers specify AQL sampling, typically to ISO 2859-1. Automated measurement and inspection make each inspected garment faster and more consistent, and give images and data to support the result.

Send us a few sample parts

Tell us what you need to check and share some good and faulty samples. We will show you what a camera can reliably see before you commit to anything.

Photographs show representative plants and equipment, not Cerox installations or client sites. Diagrams by Cerox Engineering. Photo credits, via Wikimedia Commons: Garment factory sewing floor by YeraC, CC BY-SA 4.0; Industrial sewing machine by Haddybellz, CC BY-SA 4.0.