Sineimage / 3nh YE0276 Color Spilled Coins (Dead Leaves) Test Chart for measuring camera texture sharpness

The Color 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).

We also supply other test charts like:

Specifications

Common Standard Size

Brief Introduction

1. We, 3nh-Sine Image, now is the biggest and best manufacturer of Camera Test Charts in China.

2. We can make all kinds of test charts, such as ISO12233 Resolution Charts, Distortion Charts, Greyscale Charts, 18% Netral Grey Cards, SFR Charts, Dynamic Range Charts, and so on.

3. Both transmissive and reflective are OK.

4. Any customised charts are no problem, either.

5. Our test charts definitely can match with the charts of ESSER(IE) and Imatest, no matter in accuracy or in quality.
6. Compared with ESSER(IE) and Imatest, our advantages exist on not only the much better prices but also much better delivery time.

7. More and more world famous companies have already trusted us as their long-term supplier for camera test charts.
8. These companies include HUAWEI, Apple, OPPO, vivo, O-film, DJI, GoPro, Lenovo, Samsung, LG, Suny Optics, ZTE.

9. We can make some small samples for you to check and confirm first.

Frequently Asked Questions

1. Are you a trader or a manufacturer?
Answer: We 3nh is a manufacturer, we research and develop, design and produce, market and sell color measuring instruments, gloss meters and camera test charts. Our company and factory are located in Shenzhen which is famous for manufacturing. Welcome to visit us!
2. What's your main market.
Answer: We sell to the global market.
3. How long is your delivery time?
Answer: Generally it is 3-7 working days after the payment confirmed.
4. What is your payment terms?
Answer: The payment term is 100% T/T in advance.
5. What's your minimum order quantity (MOQ)?
Answer: Our MOQ is 1 set. If you order more than 3 sets, we can provide discount.