disable histogram equalization lead depth map to void

[DragonDeux]

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Required Info
Camera Model	{ R200 / F200 / SR300 / ZR300 / D400 }
Firmware Version	(Open RealSense Viewer --> Click info)
Operating System & Version	{Win (8.1/10) / Linux (Ubuntu 14/16/17) / MacOS
Kernel Version (Linux Only)	(e.g. 4.14.13)
Platform	PC/Raspberry Pi/ NVIDIA Jetson / etc..
SDK Version	{ legacy / 2.. }
Language	{C/C#/labview/nodejs/opencv/pcl/python/unity }
Segment	{Robot/Smartphone/VR/AR/others }

Issue Description

<Describe your issue / question / feature request / etc..>

[DragonDeux]

Hello,

i have rencounted a strange issue with new Realsense L515 device: if "histogram_equalization_enabled is disable" then the output depth map would be just a black file while using colorizer to extract this depth map. the depth visualization min and max distance is configured correctly.

Is there anyone could help?
regards

[dorodnic]

Hi @DragonDeux
Sounds like a bug, we will try to look into it

[DragonDeux]

Hello @dorodnic,

very thanks for reponse so quickly, but i have found the reason for causing this "bug(actually it's not the bug i thought)". It's because i didn't configure the "visual preset" to fixed, so the min and max distance setting didn't make any effects. and we also should take care to configure "depth visulization" with a propre order, for me like this is working(version python):

colorMap = rs.colorizer() colorMap.set_option(rs.option.visual_preset, 1) colorMap.set_option(rs.option.histogram_equalization_enabled, 0.0) #disable histogram equalization colorMap.set_option(rs.option.color_scheme, float) colorMap.set_option(rs.option.min_distance , float) colorMap.set_option(rs.option.max_distance , float)
ps: with realsense D435 doesn't have the same "issus" because i have two of them, and i tested it.

regards

[dorodnic]

Glad you found a solution. This seems like a bug on our side because of the different behaviour between L515 and D400.

[DragonDeux]

I'm sorry, actually, the issue is awlays there. please keep this issue in mind .

[DragonDeux]

hello @dorodnic
Have you resolved this issue?

[aangerma]

Hello @DragonDeux , I tried to reproduce this issue with our rs-capture example and L515, can you send me the code that reproduce it?

[DragonDeux]

Hello @aangerma, Yes sure, please download this attached python file
l515.zip

[dorodnic]

Thanks @DragonDeux

[DragonDeux]

@dorodnic
Hello Dorodnic,
Did this issue has been solved ?

regards,
Deux Xie

[RealSenseSupport]

Hi @DragonDeux

This issue should be fixed based on updates here in this PR: #7645

*If we don’t hear from you in 7 days, this issue will be closed.