How to get/set config value with user code?

Nuitrack SDK
1

I want to get/set config value with user code.
I think that it will use getConfigValue() and setConfigValue().
However, I don’t know how to specify key.
Can you give me an example about it?
(For example, Depth resolution of RealSense2Module.)

Thanks,

2

Hi Tsuka,

Its not really documented anywhere - much like most of the option settings sadly.
But the values are a set of dotted paths based on the elements in nuitrack.config

So for example to change the ProcessWidth - go into the nuitrack.config - find the element you want … and work out its path:

=================================
“Realsense2Module”: {
“Depth”: {
“ProcessMaxDepth”: 4000,
“ProcessWidth”: 640,
“ProcessHeight”: 480,
“Preset”: 5,

which is Realsense2Module then Depth then ProcessWidth
that becomes Realsense2Module.Depth.ProcessWidth

Which you then call.

Nuitrack::setConfigValue(“Realsense2Module.Depth.ProcessWidth”, “320” );

A NOTE HOWEVER - you cant make many of these changes while the system is running.

Best option that we have found is to make changes just after nuitrack:init(); runs successfully that way the default values from nuitrack.config are all setup correctly first.

Then you can override any settings you need to change.

Then call DepthSensor::create();

Cheers

Westa

1 Like
3

Hi Westa,
Thanks, It works.

By the way, How is it implemented in what way in NuiTrack?
I think it seems to be just scaling the image, because it enable set to not supported resolutions (e.g. 1920x1080) in RealSense SDK.

4

Hi Tsuka,

To be honest the realsense implementation seems a little be hit and miss at times

  • maybe one of the dev’s can give some better input

Westa

5

Hi Tsukasa,

“ProcessWidth”, “ProcessHeight” is a resolution which raw input stream will be resized into (it will be upscaled/downsampled and cropped to fit aspect ratio if needed).

To change the raw stream, you can add “RawWidth”, “RawHeight”, “FPS” options to the Realsense2Module.Depth section, for example:

"Realsense2Module": {
"Depth": {
"RawWidth": 1280,
"RawHeight": 720,
"FPS": 30,
"Preset": 5,
"ProcessWidth": 640,
"ProcessHeight": 480,
"ProcessMaxDepth": 5000,
"LaserPower": 1.0
},
...
}

The same applies to Realsense2Module.RGB section.

RawWidth=1280, RawHeight=720, FPS=30 are default depth settings for D415. As for D435, default depth settings are RawWidth=848, RawHeight=480, FPS=30.

Please note that these changes may lead to performance issues.

1 Like
6

Hi olga.kuzminykh,

Thanks, I have one question.
There are not included in nuitrack.json contain in sample.
Where is documents about these options?

"Realsense2Module": {
  "Depth": {
    "RawWidth": 1280,
    "RawHeight": 720,
    "FPS": 30,
    ...
  },
  "RGB": {
    "RawWidth": 1280,
    "RawHeight": 720,
    "FPS": 30,
    ...
  }
}
8

Find nuitrack.config in installation folder of nuitrack. :slight_smile:

9

There are none frustratingly - Ive asked in the past - hopefully the will document them in more detail at some time soon.

Westa

10

Hey Olga,

Interesting detail - that actually may explain why the d435 crashes on startup more often the the d415.
848x480 isnt a supported format for some legacy usb3 connectors it seems … if we force those devices back to 640x480 they connect every time.

Good to know

Westa

11

I can’t seem to be able to load data from json array entries using these get/set methods.

For instance, take this portion of the nuitrack.config file:

{
    "RegressionSkeletonization": {
        "Filter": {
            "CombinationFilter": [
              {
                    "ThreshHold": {
                        "MaxDisplacement": 200,
                        "SmoothCameraJointVelocity": false,
                        "MinDisplacement": 50
                    }
                },
                {
                    "FABRIK": {
                        "PalmsAlignment": true,
                        "SkeletonFile": "FABRIKSkeleton.xml"
                    }
                },
                {
                    "Confidence": {
                        "ConfidenceThreshold": 0.5,
                        "CorrectHandsConfidence": true
                    }
                }
            ]
        }
    }
}

How can I access the ConfidenceThreshold value? I tried:
Nuitrack::getConfigValue("RegressionSkeletonization.Filter.CombinationFilter[2].Confidence.ConfidenceThreshold"); but it returns nothing at all.

Would be useful to have this better documented.

12

Hi pedromeleiro,

There’s no official support for getting/setting all the values from nuitrack.config. All available options are listed in Nuitrack Knowledge Base