Kinect is not firing MultiSourceFrameArrived event after some time

Question

Hi,
I am using Kinect v2 with EmguCV in my application. I am performing some image processing task on the acquired frame. I noticed that after some time (1-2 minutes) the Kinect is not firing MultiSourceFrameArrived event.
Below is the snippet of the code-
public partial class KinectForm : Form
KinectSensor kinect;
MultiSourceFrameReader reader;
CoordinateMapper coordinateMapper;
public KinectForm()
kinect = KinectSensor.GetDefault();// Get the connected kinect Sensor
coordinateMapper = this.kinect.CoordinateMapper;
reader = kinect.OpenMultiSourceFrameReader(FrameSourceTypes.Color | FrameSourceTypes.Depth);
kinect.Open();// Start reading the data from kinect
InitializeComponent();
private void FrameArrivedDisplayMode(object sender, MultiSourceFrameArrivedEventArgs e)
var reference = e.FrameReference.AcquireFrame(); // Get a reference to the arrived frame
ColorFrame colorFrame = reference.ColorFrameReference.AcquireFrame(); // Access color frame
DepthFrame depthFrame = reference.DepthFrameReference.AcquireFrame(); // Access depth frame
if (colorFrame != null && depthFrame != null)// Do not proceed, if any frame is expired
RenderColorPixels(colorFrame);
RenderDepthPixels(depthFrame);
// Lots of image processing is being performed here
if (colorFrame != null) colorFrame.Dispose();
if (depthFrame != null) depthFrame.Dispose();
private void KinectForm_FormClosing(object sender, FormClosingEventArgs e)
if (this.reader != null)
this.reader.Dispose();
this.reader = null;
if (this.kinect != null)
this.kinect.Close();
this.kinect = null;
private void displayModeRadioButton_CheckedChanged(object sender, EventArgs e)
if (displayModeRadioButton.Checked)
reader.MultiSourceFrameArrived += FrameArrivedDisplayMode;
else
reader.MultiSourceFrameArrived -= FrameArrivedDisplayMode;
The above code was working earlier, but later on once I added more processing on the data, the event was not fired at all after some point of time.
I am disposing the frame every time. Why this is happening? How to fix this problem?
Thanks

Answer 1

Carmine, Thanks a lot for prodding the references. I am in the process of designing it.
Meanwhile, since as you said the above code was holding the frame data and disposing the frame after processing it, so I though of changing the style little bit. Please see the code below-
private void FrameArrivedDisplayMode(object sender, MultiSourceFrameArrivedEventArgs e)
var reference = e.FrameReference.AcquireFrame(); // Get a reference to the arrived frame
ColorFrame colorFrame = reference.ColorFrameReference.AcquireFrame(); // Access color frame
DepthFrame depthFrame = reference.DepthFrameReference.AcquireFrame(); // Access depth frame
if (colorFrame != null && depthFrame != null) // Do not proceed, if any frame is expired
ColorFrame.CopyConvertedFrameDataToArray(ColorFramePixels, ColorImageFormat.Bgra);
depthFrame.CopyFrameDataToArray(DepthFrameData);
colorFrame.Dispose();
depthFrame.Dispose();
//Here I am doing image processing
Now, this way I am not using some of the frames but it should work, since the frame is disposed earlier.
But still after some time, the event is not fired out.
Why? Can you tell me the reason?
Thanks
Ravi