Dead Leaves Target–Colored YE0276

The YE0276 Dead Leaves Target is used for the analysis of 'texture loss', which is the loss of low contrast, fine details in images due to noise reduction or other image processing techniques.

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.

3nh cherishes talents, focuses on talents. Company brings together many of high-level, high educated professionals. Among them, undergraduate academic staffs of the total number of company accounted for more than 80%; postgraduate staffs of the total number of company accounted for 30%. It involves the fields of photometry, electronic circuit, embedded system, photoelectric detection, mechanical structure design, optical design, application software, lighting technology electronic commerce and internet. 3nh team has strong capability to design, develop and produce on its own. The company has a large number of innovation patents, core technologies and intellectual property rights of 3nh products.

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