Using OpenNI and Opencv to Show Depthmap in Python

prash4nth 2016-07-07 05:59:20 UTC #1

Hello

i recently got my Orbbec Astra Pro and i wanted to display the depth map in python using openni and opencv but i am unable to.Please help me

thanks

qlkvg 2016-07-07 07:32:59 UTC #2

gist.github.com

https://gist.github.com/qlkvg/5f33b58469a552cc68a50380549f0951

test.py

#!/usr/bin/python
import cv2
import numpy as np
from primesense import openni2
from primesense import _openni2 as c_api
openni2.initialize("<PATH TO OPENNI2 REDIST FOLDER>")
dev = openni2.Device.open_any()
depth_stream = dev.create_depth_stream()
depth_stream.start()
depth_stream.set_video_mode(c_api.OniVideoMode(pixelFormat = c_api.OniPixelFormat.ONI_PIXEL_FORMAT_DEPTH_100_UM, resolutionX = 640, resolutionY = 480, fps = 30))

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prash4nth 2016-07-11 03:47:47 UTC #3

Thank You!

hntuan94 2017-03-20 10:52:15 UTC #4

Hi,

How to install openni2?
I am using Persee with Ubuntu image.

Thanks,

qlkvg 2017-03-28 12:25:30 UTC #5

What do you actually mean? you don't need to install openni2, just download it and place somewhere in fs. Python bindings for openni2 installing by pip, as usual - "pip install primesense"

hntuan94 2017-04-19 02:53:07 UTC #6

Yeah! I used PyOpenNI2 but it didn't work. After installing primesense your sample code works perfectly.

luketg8 2017-05-09 15:17:36 UTC #7

@qlkvg Did you manage to get it working as a depth stream on the Orbbec Persee itself without it looking for external USBs? I've already tried changing the USBInterface to 0 in PS1080.ini etc Thanks

qlkvg 2017-05-11 07:44:02 UTC #8

No, don't have one. You'd better ask orbbec developer directly via mail about this.

clip 2017-08-04 02:43:17 UTC #9

Hi there-

New to the Orbbec world; I have an Astra and Astra S on loan, and it seems like an interesting platform.

I've installed OpenNI2 and the Astra driver on a VirtualBox windows machine, and have tried the above Python script (IDE is Spyder; Python 3.5). I know the virtual machine sees the Astra, and has installed drivers for it, and it is seen in my Device Manager.

I've copied the OpenNI2.dll to the directory C:\openni2\OpenNI2\Drivers, so my initialization reads:

openni2.initialize('C:\openni2\OpenNI2\Drivers')

When I run my code for the first time, I get:
InitializationError: OpenNI2 could not be loaded:
C:\openni2\OpenNI2\Drivers\OpenNI2.dll: (OniStatus.ONI_STATUS_ERROR, b"Found no files matching 'C:\openni2\OpenNI2\Drivers\OpenNI2\Drivers\*.dll'", None)

Yet, when I run the code again, I get:

InitializationError: OpenNI2 could not be loaded:
C:\openni2\OpenNI2\Drivers\OpenNI2.dll: DLL already loaded

OpenNIError: (OniStatus.ONI_STATUS_ERROR, b'DeviceOpen using default: no devices found', None)

I'm wondering what I might be doing wrong here. How do we determine if the Astra/Astra S is seen?

sharmagarv 2017-09-05 15:33:13 UTC #10

Hello

I have the same doubt on how to install OpenNI2 (on Persee) to use with CodeBlocks.

were you able to figure it out?

sharmagarv 2017-09-05 15:35:36 UTC #11

Hi,

can you explain a little more elaborately what is to be done to use OpenNI on linux (i am using it with Codeblocks in c++, instead of python)
What is this 'fs' that you mention of?

qlkvg 2017-09-06 05:32:41 UTC #12

fs == filesystem
Just download OpenNI according to your machine architecture, place it somewhere (e.g. /opt) and use it. You need also to set env variables OPENNI_REDIST with path to libraries and OPENNI_INCLUDE with path to headers. You can find more information here - http://www.openni.ru/wp-content/doxygen/html/getting_started.html

Darth_dxVxb 2020-03-13 11:27:27 UTC #13

hey, I know its been a minute since this post has been made, but anybody know how to save the depth/ir data ? i want to be able to find depth at certain regions. so a X,Y,Z coordinate system i guess. thanks .