Dead Leaves Target – Colored YE0276 Texture Loss Analysis Resolution Test Chart

The dead leaves target is mainly used to test the texture details and the effect of denoising on the texture details.

YE0276 includes the dead leaves target and the hypotenuse part, which is convenient for testing MTF and texture loss at the same time, and it is convenient for the test species to balance the two debugging directions.

When the texture loss part and the hypotenuse part meet certain requirements, the performance of the camera is better.

The YE0276 consists of five items:

• Background

All following items are placed on a neutral gray background with a gray level of 18%.

• Registration Marks

Four registration marks are placed on the test chart, one in each corner. These marks are used for the automatic registration in analysis software, e.g. the iQstest.

• Gray Patches

The chart contains 16 gray patches. The reflection of these patches is linear spaced between the brightest patch and the darkest patch.

• Dead Leaves Pattern

The main item is the so called Dead Leaves pattern. This pattern consists of circles stacked on top of each other with a known probability distribution of position, radius and digital value of channel R, G and B. The contrast is limited to 20% of the maximum achievable contrast.

• Slanted Edges

Four slanted edges with different, reduced modulation are arranged around the Dead Leaves pattern. Two of them in vertical orientation and the other two in horizontal orientation.

For the software based analysis of images, captured of the YE0276, you can use the iQstest. This software will provide the Spatial Frequency Response (SFR) measured on this target.

Recommended usage:

We recommend to reproduce the chart with the device under test in that way, that the chart fills not more

than 1/3 of the image height.

In case this chart fills 1/3 of the image height it can be used for cameras with a sampling rate of up to 30

Megapixels.

Suzie Xia
International Sales Dept.
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Shenzhen ThreeNH Technology Co., Ltd
Add: 4/F, Building 8, Nangang Second Industry Zone, Xili, Nanshan District, Shenzhen, 518055 China.
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Shenzhen ThreeNH Technology Co., Ltd

Established in 1998, Shenzhen ThreeNH Technology Co., Ltd. is a high-tech enterprise. We research, develop, produce and market photoelectric detection products in photoelectric detection technology field and color management field. After years of intensive research, 3nh has launched NS series spectrophotometer and NH, NR series colorimeter, ISO12233 resolution test chart, optical image test solution and specific standard illuminant which are widely used in plastic, electronic, paint, ink, textile, garment, printing and dyeing, food, medical, cosmetic, optical image test industries and the field of scientific research, school and laboratory.

Our products are exported around the world. We can provide customization service which has been well received by customers.

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