YE0276 Reflective Resolution Test Chart 16:9 Ratio Texture Sharpness Test Target
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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 |
| Product Tags: lens resolution test chart camera resolution test chart |
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