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Very low precision, is there something wrong with my camera? #9341

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JerryGadd opened this issue Jul 6, 2021 · 16 comments
Closed

Very low precision, is there something wrong with my camera? #9341

JerryGadd opened this issue Jul 6, 2021 · 16 comments

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@JerryGadd
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Hi All,
I have an L515, and using the Intel RealSense Viewer (v2.43.0), i get really poor precision of depth.
If i shut my Office Curtains andset to No Ambient Light, it improves a tiny amount, but still much much poorer than i would expect. Is there something wrong with myh device or settings?
See attached image.


| Camera Model | L515
| Firmware Version | 01.05.05.00
| Operating System & Version | Win 10
| Platform | PC

2021-07-06 09_52_42-Intel RealSense Viewer v2 43 0

@MartyG-RealSense
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MartyG-RealSense commented Jul 6, 2021

Hi @JerryGadd Could you disable Depth and RGB in the RealSense Viewer's 3D point cloud mode, and then enable Depth first and RGB second. This should result in a textured point cloud where RGB color information is automatically mapped onto the depth points.

Although you have RGB enabled in the image that you kindly supplied, it has no RGB color (the color in the image is depth points that are color-shaded according to their depth values).

This kind of RGB-less image could be produced in the Viewer's 3D point cloud mode if you entered 3D mode and then enabled RGB first and depth secondly. If Depth is enabled first and RGB second in 3D mode then the RGB image should automatically be mapped onto the depth points.

Do the Depth and RGB streams look correct if you switch the Viewer to 2D mode using the 2D option in the top corner of the Viewer window?

@JerryGadd
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JerryGadd commented Jul 7, 2021 via email

@MartyG-RealSense
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MartyG-RealSense commented Jul 7, 2021

Would it be possible to provide an RGB image of the scene that the camera is observing please so that I can see whether there are factors in the location that may be affecting the depth image?

Could you also try disabling the two GLSL options in the settings of the Viewer please to see whether that makes a positive difference. Instructions for performing this procedure can be found in the link below.

#8110 (comment)

@JerryGadd
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JerryGadd commented Jul 7, 2021 via email

@MartyG-RealSense
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MartyG-RealSense commented Jul 7, 2021

Thanks very much for checking the GLSL settings.

Next, please return to the settings interface and try resetting the Viewer software's defaults by (1) selecting the General option tab, (2) clicking on the Restore Defaults button, and finally (3) clicking on the Apply button.

image

@JerryGadd
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JerryGadd commented Jul 7, 2021 via email

@MartyG-RealSense
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MartyG-RealSense commented Jul 7, 2021

When the L515 is enabled, there is a period of 4 or 5 seconds before the Apd Temperature under the 'Controls' category of the 'L500 Depth Sensor' options updates from its default of '-9999'. When my own L515 first updates, it has a temperature of around 27 or 28. What does your own Apd temperature read as after 5 seconds please?

image

@JerryGadd
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JerryGadd commented Jul 7, 2021 via email

@MartyG-RealSense
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It is normal for the L515's temperatures to rise over time after the camera is enabled. A temperature of 35 does not seem excessive enough to cause problems so soon after streaming commences.

What is the depth image like in the Viewer's 2D mode?

@JerryGadd
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JerryGadd commented Jul 7, 2021 via email

@MartyG-RealSense
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Please check whether the Temporal Filter post-processing filter is responsible by left-clicking on the blue icon beside the Post-Processing option to turn the icon from blue (On) to red (off).

image

@MartyG-RealSense
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Hi @JerryGadd Do you require further assistance with this case, please? Thanks!

@JerryGadd
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JerryGadd commented Jul 13, 2021 via email

@MartyG-RealSense
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The L515 is an indoor camera that is suited to controlled lighting conditions where the light level remains consistent instead of varying and there is not sunlight coming through a window (as it is disrupted by infrared sources).

Do you have any devices near the L515 that might be emitting infrared, such as a RealSense 400 Series camera?

@MartyG-RealSense
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Hi @JerryGadd Do you require further assistance with this case, please? Thanks!

@MartyG-RealSense
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Case closed due to no further comments received.

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