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Which one is more accurate for 3D face reconstruction, SR300 and 415?

idata
Employee
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I didn't find any test reports for depth precision on the Intel realsense website. May I ask about the depth precision of SR300 and 415 especially for near objects? (such as 3D face reconstruction at a distance around 20cm~60cm)?

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MartyG
Honored Contributor III
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At very close range, you may get more accuracy from an SR300 due to a difference in pixel ratios in the SR300 and the 400 Series. Though the 400 Series can have its pixel ratio adjusted.

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idata
Employee
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May I ask what pixel ratio refers to?

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MartyG
Honored Contributor III
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Sorry, when I said 'pixel ratio', I meant 'depth scale'. you can read about it in the documentation section linked to below, which is also the source of the pixel scale information I quoted,

https://github.com/IntelRealSense/librealsense/wiki/Projection-in-RealSense-SDK-2.0# depth-image-formats Projection in RealSense SDK 2.0 · IntelRealSense/librealsense Wiki · GitHub

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