NullReferenceException when using SharpSenses and RealSense 3d camera

Question

I have already installed the correct Intel RealSense SR300 camera drivers and can use the Intel RealSense viewer to see both the rgb and depth camera streams. So I know this side of things are working ok.

I now want to use SharpSenses library from nuget to experiment. I am using the same code they display in their homepage

        var cam = Camera.Create();
        cam.LeftHand.Visible += (sender, args) => {
            Console.WriteLine("Left Hand Visible");
        };
        cam.LeftHand.NotVisible += (sender, args) => {
            Console.WriteLine("Left Hand Not Visible");
        };
        cam.Start();
        Console.ReadLine();

However it fails to run with

System.NullReferenceException: 'Object reference not set to an instance of an object.'

In the line

var cam = Camera.Create();

the inner exception is

    StackTrace  "   at SharpSenses.RealSense.RealSenseCamera..ctor()\r\n   at SharpSenses.Camera.Create(Capability[] capabilities)\r\n   at SharpSenses.Camera.Create()\r\n   at WpfApp1.MainWindow..ctor() in c:\\users\\rfonseka\\documents\\visual studio 2017\\Projects\\WpfApp1\\WpfApp1\\MainWindow.xaml.cs:line 28"  string

What am I missing?

I have download and installed intel_rs_sdk_offline_package_10.0.26.0396.exe but that didn't make any difference.

Possible duplicate of [What is a NullReferenceException, and how do I fix it?](https://stackoverflow.com/questions/4660142/what-is-a-nullreferenceexception-and-how-do-i-fix-it) — Alejandro, Mar 19 '18 at 12:51

score 0 · Answer 1 · answered Mar 19 '18 at 12:50

0

Try replacing your first line with:

var cam = Camera.Create(Capability.HandTracking);

answered Mar 19 '18 at 12:50

andrecarlucci

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score 0 · Answer 2 · answered Mar 20 '18 at 23:57

Figured it out. I uninstalled everything I installed for the RealSense. I installed the Depth Camera Manager for SR300 I installed the Intel RealSense SDK R2 (v10)

Ran my project and it worked! So I must have had a lot of stuff installed/not installed that was causing the issue.

NullReferenceException when using SharpSenses and RealSense 3d camera

2 Answers2