How can I get the depth values from the raw image/png images in centimeters/millimeters? I want to get the high precision values. Not by just converting the meters into centimeters.

arake001 commented 5 years ago

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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 }

ev-mp commented 5 years ago

@ankith001 , to convert the raw depth data (uint16_t) into metric values you need to multiply those by the depth_scale value ,e.g. Link:

depth_scale = profile.get_device().first_depth_sensor().get_depth_scale()

This multiplication is also performed internally in rs-hello-realsense example

You cannot extract depth values from the exported PNG (colored) depth images. The color mapping is a one-way function due to histogram equalization.

RealSenseCustomerSupport commented 5 years ago

@ankith001, can we close this ticket if there is no further question?

IntelRealSense / librealsense