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Black & White Spilled Coins (Dead Leaves) Test Chart

Black & White Spilled Coins (Dead Leaves) Test Chart Instructions Operating Manual Black & White Spilled Coins (Dead Leaves) Test Chart PDF
This Black & White Spilled Coins (Dead Leaves) Test Chart Instrument are Certified with
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The  Spilled Coins chart (a variant of the Dead Leaves chart) for measuring texture sharpness has several advantages over older Dead Leaves charts. Key features:

  • The Scattered Coins pattern in the central region is almost perfectly scale-invariant (unlike conventional dead leaves charts), enhancing the accuracy and robustness of MTF measurements so they correlate well with other methods (such as the slanted-edge) for RAW images (which have no nonuniform or nonlinear processing).
  • Maximum contrast range is 3:1, as called for in the CPIQ Phase 3 draft Texture Blur Metric draft specification.
  • It is more uniform, i.e., is more shift-invariant than other Dead Leaves charts.
  • It contains slanted edges (2:1 and 4:1 contrast) for convenient comparisons with the dead leaves pattern.
  • The gray area to the left and right of the dead leaves pattern has the same mean density as the dead leaves pattern, allowing it to be used for effective noise PSD removal using the McElvain et. al. technique.
  • Registration marks and 16 grayscale patches are included. The linear levels used to create the grayscale patches are 0 through 255 in steps of 17 (same as the Siemens Star chart in the draft of the upcoming ISO 12233 standard).
  • Imatest Spilled Coins equivalent of the Image Engineering TE-265 referenced in the Skype spec is the Large, Matte ISC0024
Spilled Coins chart sizes Spilled Coins region Printed region Media size total
Large 12" × 12"
305 mm × 305 mm		 22.4" × 16.8"
569 mm × 426 mm		 24" × 18"
610 mm × 458 mm
Medium 8" × 8"
203 mm × 203 mm		 14.93" × 11.2"
379 mm × 284 mm		 16" × 12"
458 mm × 305 mm
Small 6" × 6"
152 mm × 152 mm		 11.2" × 8.4"
284 mm × 213 mm		 12" × 10"
305 mm × 254 mm
X-Small (High Precision Transmissive) 5.536" × 5.536"
141 mm × 141 mm		 9.25" × 7.75"
159 mm × 197 mm		 10" × 8"
254 mm × 203 mm

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FAQs About  Texture Test Charts

 Color is measured using devices such as colorimeters, spectrophotometers, and spectroradiometers. Colorimeters are easier and good for simple color quality tests. Whereas spectrophotometers yield detailed spectral information. Hence, suitable for laboratories and industries.

Yes, we can offer quality certification issued by our lab free of charge, or issued by third-party international inspection Organizations with extra charge, please contact us for confirmation.

Threenh colorimters are used across various industries to measure, analyze, and control color accuracy and consistency:

Food and Beverages: Monitor color quality in food products to meet industry standards.

Plastics and Polymers: Ensure color uniformity in plastic components (e.g., casings, buttons, panels) during manufacturing.

Chemicals and Pharmaceuticals,Cosmetics: Industry-specific accessories to attain the highest safety protocols, Ensure uniform color in pharmaceutical products for quality and brand recognition;Develop and match colors for cosmetics (e.g., lipsticks, creams, powders) and ensure batch consistency.

Textiles and Apparel: Monitor color consistency in fabrics during dyeing, printing, or finishing processes; ensure color consistency in fabrics and garments.

Building materials, Paints, and Coatings: Detect color deviations in coatings on metal, wood, or plastic surfaces (e.g., automotive paints, furniture finishes). Maintain color accuracy in building materials, paints, and coatings.

Printing and Packaging: Validate color accuracy in printed materials (e.g., brochures, labels, packaging) against design proofs, maintain consistency across different printing technologies.

By addressing color-related quality control challenges, 3NH colorimeters help industries maintain brand consistency, meet regulatory standards, and enhance customer satisfaction.


The principle of colorimetry is the law of Beer-Lambert, which says that the intensity of light absorbed by a colored solution is proportional to the concentration of the absorbing species and the path length. It measures the extent of light that is absorbed at certain wavelengths.


Follow the calibration steps form 3nh. Don’t touch the sample and drop the measurement light to eliminate external light.


Colors look different under various lights mainly because of metamerism—a phenomenon where two colors that match under one light source fail to match under another, caused by differences in the spectral composition of light.

object_Colors_look_different_under_various_lights1

Different lighting varies the color perception of objects. Warm light, like that from incandescent bulbs, tends to make colors more yellow, while daylight presents a bluish tint. Our color vision system plays a compensating role using a mechanism called color constancy.

Every light source emits light with a unique "spectral fingerprint" (i.e., the range and intensity of wavelengths it contains). This directly affects how an object’s surface reflects light and how our eyes perceive its color.

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