Textile, polymer & composite

Cover factor & open area

Optical open area, pore size distribution, and cover uniformity measured on the actual fabric.

ModalitiesTransmitted lightFlatbed scanMicroscopy
Backlit plain-weave fabric with bright square openings between the yarns, showing the optical open area of the weave
12.4%
Open area
3,180
Pores
96 µm
Median pore

Example outputs shown for illustration. Numbers depend on your samples and protocol.

Image: Illustrative rendering (AI-generated, gpt-image-2), not a photograph of a specific fabric

Transmitted light
Light through the section for thin, translucent samples.
Flatbed scan
Flat, evenly-lit capture of sheets, fabrics, and sections.
Microscopy
Bench microscopy at the magnification your protocol already uses.

Results

Each measurement below comes from your own images, tied back to the annotated frame it came from, so results stay comparable across samples, locations, and conditions.

% area

Open area %

Segmented area of the feature divided by the eligible area in the two-dimensional image.

Open area12.4%
<1µm
1-2µm
2-4µm
>4µm

Example, not a claimed result

In your report: Per-field value, size distribution, and the segmentation overlay used.

% area

Pore count

Segmented area of the feature divided by the eligible area in the two-dimensional image.

Pores3,180
<1µm
1-2µm
2-4µm
>4µm

Example, not a claimed result

In your report: Per-field value, size distribution, and the segmentation overlay used.

% area

Pore size distribution

Segmented area of the feature divided by the eligible area in the two-dimensional image.

Median pore96 µm
<1µm
1-2µm
2-4µm
>4µm

Example, not a claimed result

In your report: Per-field value, size distribution, and the segmentation overlay used.

per area

Cover uniformity map

Findings placed in sample coordinates to reveal spatial patterns and local density.

Illustrative shape
Bottom
64%
Corner
71%

In your report: Coordinate-referenced map, regional density, and representative images.

Built around your image set

Use the calibrated images your team already collects, together with the locations you need to compare.

01
Representative images
Provide representative transmitted light images with a recorded scale calibration and the regions of interest clearly visible.
02
Image capture details
Record instrument, magnification, pixel scale, preparation method, and the smallest feature the review must resolve.
03
What to compare
State the samples, number of fields, and conditions to compare. A single field of view is not treated as a whole-sample result by itself.

Each report includes

The artifacts your team receives, ready for review and archive.

Annotated image set

Original images with regions of interest, measurement points, masks, and finding overlays.

Measurement table

Location-indexed values, units, distributions, and QC flags in a structured export.

Method record

Calibration evidence, analysis settings, version history, and validation summary.

Confidence in every resultTraceable measurements, reviewed against your agreed reference method.
Traceable scale
The report records the image scale, calibration evidence, and a method-specific expanded measurement uncertainty. It does not use one product-wide accuracy number.
Reference comparison
The configured method is compared with your accepted reference method or reviewed annotations, and reports bias by measurement range and image condition.
Detection performance
Detections are evaluated against reviewed reference regions with precision, recall, and segmentation overlap, separated by the conditions that affect performance.
Repeatability
The locked protocol is rerun on the same inputs and on a defined repeat set. The review records variation from image acquisition, sampling, and analysis separately where possible.

What this result does not establish: Reports optical open area measured from transmitted-light images. This is a geometric measurement, not an air-permeability test; correlate it against your permeability method before using it as a substitute.

The measurement, today

Cover and openness are usually inferred from construction arithmetic or an air-permeability reading. Neither tells you where the fabric is open, or how the pores are distributed.

What it costs

Cover drives opacity, air permeability, hand, and print quality. Where a fabric is unexpectedly open, prints bleed and coatings strike through, and the fault is only found after finishing.

From image to reviewed result

  1. 1

    Backlight the fabric

    Capture a transmitted-light image so interstices read bright against the yarn.

  2. 2

    Threshold the openings

    Adaptive thresholding separates open interstices from yarn, without a fixed global cutoff.

  3. 3

    Measure the pores

    Each opening is measured for area and equivalent diameter; the distribution and median pore follow.

  4. 4

    Map uniformity

    Open area is reported per tile across the field so thin and dense regions are visible.

Talk to a scientist

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