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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

To operate the haze meter, first calibrate the instrument, clean the sample, position it correctly in the holder, and initiate the measurement. The instrument then shows the haze and overall transmittance readings.

The number of reflected light is a measure assigned by a gloss meter as a gloss unit (GU). It is a normalized quantity in which 100 GU is normally a perfect reflection at 60°, and 0° GU is a full diffusion.


Each haze test can take from 3 to 10 seconds depending on the device and the type of sample.


A visual colorimeter is a type of colorimeter that uses the human eye to compare the color depth of a sample with that of a standard solution for semi-quantitative or quantitative analysis of substances. This method is commonly used for quick, rough evaluations in industries such as petroleum, transparent liquids, varnishes, chemicals and printing, as well as for visual color grading in quality control. Its working principle is to compare the sample with a standard and provide visual color measurement results, rather than relying on electronic sensors.

Visual Colorimeters vs. Photoelectric Colorimeters

Visual colorimeters rely on human eye observation, whereas photoelectric colorimeters use sensors to deliver higher precision, complete the measurement automatically through electronic circuits, less subjective color measurement and faster results. They are generally more suitable for rapid, on-line or portable color difference measurement.

Working principle of a photoelectric colorimeter

A light source emits light at specific wavelengths, which interacts with the object surface through reflection and transmission. The light is reflected or absorbed by the sample, and the reflected light or remaining transmitted light is received by a photoelectric sensor (photocell or photodiode). The instrument converts the light intensity signal into an electrical signal, thereby measuring the LAB color values of the sample.

3nh Photoelectric Colorimeter – A Trusted Brand in the Color Measurement Industry

Featuring ultra-high precision, user-friendly interface, light positioning function, high-capacity lithium-ion battery, and multiple optional measurement angles.



Color measurement methods involve visual approximation (against color charts), colorimetry (by means of filters and detectors), spectrophotometry (a more detailed spectral analysis), and image analysis by computer. These are color measurement methods that are applied in the laboratory, production, and quality assessment.

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.


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