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Four-point system - The 4-point system for fabric inspection

The 4-point system gives each fabric defect 1 to 4 points by its size. Mills add up a roll's points, work out its points per 100 square yards and check that figure against the buyer's limit.

Two rolls of plain fabric lying on a workshop table

Points by defect size

An inspector measures each defect and gives it points from this scale.

Points by defect size
DefectPoints
Up to 3 inches1
Over 3 inches, up to 6 inches2
Over 6 inches, up to 9 inches3
Over 9 inches4
Hole or opening, 1 inch or less2
Hole or opening, over 1 inch4

A running defect gets up to 4 points for each yard it runs, and no linear yard gets more than 4 points, however many defects it holds. Your buyer's manual can change these rules.

Points per 100 square yards or metres

Rolls differ in length and width, so mills compare them by area. Multiply the total points by 3,600, then divide by the yards inspected times the cuttable width in inches. In metres, multiply by 100,000 and divide by the metres inspected times the cuttable width in millimetres.

Units

Points per 100 square yards

14.4

Who sets the limit

Your buyer sets the limit, and it can differ by fabric. One retailer's published manual allows 20 to 40 points per 100 square yards for a roll, depending on the fabric.

How ConductVision Textile counts a roll

ConductVision Textile is designed to mark fabric defects in video of your inspection frame and count each roll's points.

Marked defects

Each defect comes with its place on the roll, its size, its points and a still image. Your inspector confirms or dismisses it.

Running points

The roll's running points, as a total and over the area inspected, to check against your buyer's limit.

Final points forecast

The points the roll is likely to end with, as a range, and the chance it ends over your buyer's limit.

Roll report and defect map

A roll inspection report with every confirmed defect, the roll's totals and a line for your inspector's decision, and a map of the roll with its defects marked.

Sources

How a pilot works

Full recordings stay on your network. For each event it flags, ConductVision saves a record and a short clip at your site.

  1. First look

    We look at footage you choose to share with us and agree with your team on what to watch for.

  2. Paid pilot

    ConductVision connects to your camera system and runs for a set time.

  3. Pilot results report

    You get a report of the results on your own footage, checked against the criteria your team set.

  4. Your decision

    You decide whether to roll out, change the scope or stop.

One question to start with

Which fabric would you test first?

Plan a pilot

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