c# D400 Series Visual Presets

[laolaolulu]

.net C # How to load the default JSON file?

{
"aux-param-autoexposure-setpoint": "1536",
"aux-param-colorcorrection1": "0.298828",
"aux-param-colorcorrection10": "0",
"aux-param-colorcorrection11": "0",
"aux-param-colorcorrection12": "0",
"aux-param-colorcorrection2": "0.293945",
"aux-param-colorcorrection3": "0.293945",
"aux-param-colorcorrection4": "0.114258",
"aux-param-colorcorrection5": "0",
"aux-param-colorcorrection6": "0",
"aux-param-colorcorrection7": "0",
"aux-param-colorcorrection8": "0",
"aux-param-colorcorrection9": "0",
"aux-param-depthclampmax": "65536",
"aux-param-depthclampmin": "0",
"aux-param-disparityshift": "50",
"controls-autoexposure-auto": "True",
"controls-autoexposure-manual": "8500",
"controls-color-autoexposure-auto": "True",
"controls-color-autoexposure-manual": "156",
"controls-color-backlight-compensation": "0",
"controls-color-brightness": "0",
"controls-color-contrast": "50",
"controls-color-gain": "64",
"controls-color-gamma": "300",
"controls-color-hue": "0",
"controls-color-power-line-frequency": "3",
"controls-color-saturation": "64",
"controls-color-sharpness": "50",
"controls-color-white-balance-auto": "True",
"controls-color-white-balance-manual": "4600",
"controls-depth-gain": "16",
"controls-laserpower": "360",
"controls-laserstate": "on",
"ignoreSAD": "0",
"param-autoexposure-setpoint": "1536",
"param-censusenablereg-udiameter": "9",
"param-censusenablereg-vdiameter": "9",
"param-censususize": "9",
"param-censusvsize": "9",
"param-depthclampmax": "65536",
"param-depthclampmin": "0",
"param-depthunits": "100",
"param-disableraucolor": "0",
"param-disablesadcolor": "0",
"param-disablesadnormalize": "0",
"param-disablesloleftcolor": "0",
"param-disableslorightcolor": "0",
"param-disparitymode": "0",
"param-disparityshift": "50",
"param-lambdaad": "800",
"param-lambdacensus": "26",
"param-leftrightthreshold": "24",
"param-maxscorethreshb": "2047",
"param-medianthreshold": "500",
"param-minscorethresha": "1",
"param-neighborthresh": "7",
"param-raumine": "1",
"param-rauminn": "1",
"param-rauminnssum": "3",
"param-raumins": "1",
"param-rauminw": "1",
"param-rauminwesum": "3",
"param-regioncolorthresholdb": "0.0499022",
"param-regioncolorthresholdg": "0.0499022",
"param-regioncolorthresholdr": "0.0499022",
"param-regionshrinku": "3",
"param-regionshrinkv": "1",
"param-robbinsmonrodecrement": "10",
"param-robbinsmonroincrement": "10",
"param-rsmdiffthreshold": "4",
"param-rsmrauslodiffthreshold": "1",
"param-rsmremovethreshold": "0.375",
"param-scanlineedgetaub": "72",
"param-scanlineedgetaug": "72",
"param-scanlineedgetaur": "72",
"param-scanlinep1": "60",
"param-scanlinep1onediscon": "105",
"param-scanlinep1twodiscon": "70",
"param-scanlinep2": "342",
"param-scanlinep2onediscon": "190",
"param-scanlinep2twodiscon": "130",
"param-secondpeakdelta": "325",
"param-texturecountthresh": "0",
"param-texturedifferencethresh": "0",
"param-usersm": "1",
"param-zunits": "100",
"stream-depth-format": "Z16",
"stream-fps": "6",
"stream-height": "720",
"stream-width": "1280"
}

[dorodnic]

Hi @laolaolulu

var pipeline = new Pipeline();
var profile = pipeline.Start();
var adv = AdvancedDevice.FromDevice(profile.Device);
adv.JsonConfiguration = File.ReadAllText("1.json");

[laolaolulu]

The exception thrown: "System. AccessViolationException" (in OpenCvSharp. dll) Unhandled exceptions of the "System.AccessViolationException" type occur in OpenCvSharp.dll Attempt to read or write to protected memory. This usually indicates that other memory is corrupted.

[dorodnic]

I don't think this is related to the SDK. My best guess is that by switching from explicit Config (the commented out code) to the new code snippet, your app got a different resolution from before, resulting in over/under-flow in OpenCvSharp.dll. Can this be the case?

[laolaolulu]

The program does nothing else, as long as it executes this (var adv = AdvancedDevice. FromDevice (profile. Device);) the code program exits immediately or throws System. AccessViolationException:" I couldn't find the PDB file of Intel. RealSense. dll.

[laolaolulu]

I've given up using JSON files. I need to set up Disparity Shift, Laser Power... How should c# be set? Sorry, realsense has too little information about. net.

@dorodnic

[laolaolulu]

I found something unusual.

[ThunderChild-001]

Hallo @dorodnic

I also discovered something similar to the above. It seems to be some setting in the json file which is causing an access violation exception randomly within the first 5 seconds of running the camera?

I just tried to load the HighDensityPreset via a Json file I created through the RealSense viewer. Everything runs fine for around 5 seconds and then you get an access violation. It seems to have more chance of happening if I'm dragging a movable button to get pixel values to use in a measurement.

This doesn't happen without the preset loaded. Some setting must be causing instability?

[dorodnic]

Hi @KarlAbson
We will try to reproduce and look into that.

[ThunderChild-001]

Hi @dorodnic

That would be great! Thanks very much.
Would it help if I sent you the sample project?
It's not quite finished, could do with some improvement but I was going to send you the measuring project in C# anyway.

[RealSense-Customer-Engineering]

[Realsense Customer Engineering Team Comment]
Hi @KarlAbson, @laolaolulu,

I can reproduce the similar crash issue if a json file loaded.
By the way, which librealsense version do you use?

[ThunderChild-001]

Hi @RealSense-Customer-Engineering

Great. Thanks for looking into it. I'm using 2.16.5.

[amatabuena]

Hi,

I can also reproduce the same issue. In my case with 2.17.0 librealsense version. When disposing device I also receive a System.AccessViolationException. If I don't dispose it, when I try to load a Json again I receive again a System.AccessViolationException. It looks like Json settings get device corrupted.

If I don't load any Json file, it works fine.

[OlivierHoel]

Hi all !
I have a similar bug when trying to load presets config stored in a json file in my C# script (running in Unity).
Is there another "manual" way to set parameter values ?
Thanks

[RealSenseCustomerSupport]

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Hi @OlivierHoel,

You can refer to #3088 to set the options in C#.

[OlivierHoel]

Thanks for the link but apparently the enum values listed in Intel.RealSense.Option only gives you access to the "standard" parameters and not the "advanced" ones (e.g. disparity shift). I couldn't find a way to set the 92 params present in my json config file (exported from the realsense viewer).

[RealSenseCustomerSupport]

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@ogoshen, any info to support the advanced parameters?

[ogoshen]

Advanced mode commands API is yet available in C# (STDepthControlGroup, STRsm, etc.)
The various functions (rs2_set_depth_control, rs2_set_rsm...) are present in NativeMethod.cs but not yet exposed through the public API of AdvancedDevice.

A PR would be more than welcome here...

In the meanwhile I can suggest getting the above fixes for AdvancedDevice, and using JSON de/serialization for getting and setting those parameters.

[RealSenseCustomerSupport]

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This is fixed. Please refer to the release note.