crashing at cv::Rect FDet::Detect(cv::Mat im) function - error telling me the image dims are 0,0

[tyhenry]

I'm using VS2015 - everything works well up to this point, using webcam.

Now I'm trying to using the color stream from a Kinect v2 (using Elliot Woods' ofxKinectForWindows2)

No issues displaying the Kinect's color video (1080p30), but when I try to send the ofPixels to ofxFaceTracker, it crashes.

Here's my relevant code:

        // update face tracker
	ofPixels& colPix = kinect.getColorPixels();
	if (colPix.size() < 1) return;

	cout << "colPix - w: " << colPix.getWidth() << ", h: " << colPix.getHeight() << endl;

	if (kinect.isFrameNew())
		faceTracker.update(toCv(colPix));

In console, I get an

OpenCV Error: Assertion failed (ssize.area() > 0) in cv::resize, file ......\modules\imgproc\src\imgwarp.cpp, line 1834

Here's the VS2015 exception I get:

Unhandled exception at 0x00007FF9356B8A5C in kinectFaceTracker_debug.exe: Microsoft C++ exception: cv::Exception at memory location 0x0000000000139FE0.

It's traced to FDet.cc, somewhere at lines 88/89, within the cv::Rect FDet::Detect(cv::Mat im) function:

cv::resize(gray,small_img_,cv::Size(w,h),0,0,CV_INTER_LINEAR); cv::equalizeHist(small_img_,small_img_);

In the VS variable readout, it tells me the im.cols and im.rows are both 0 - any ideas?

	CV_BGR2GRAY	CV_BGR2GRAY (6)	<unnamed-enum-CV_BGR2BGRA>
	CV_INTER_LINEAR	CV_INTER_LINEAR (1)	<unnamed-enum-CV_INTER_NN>

•   gray	{flags=1124007936 dims=0 rows=0 ...}	cv::Mat
    h	0	int
  

•   im	{flags=1124007936 dims=0 rows=0 ...}	cv::Mat
    im.cols	0	int
    im.rows	0	int
  

•   small_img_	{flags=1124007936 dims=0 rows=0 ...}	cv::Mat
  

•   this	0x0000000002f9f970 {_haar_count=0 _haar_rect={x=0 y=0 width=0 ...} _min_neighbours=2 ...}	FACETRACKER::FDet *
    _haar_count	0	int
  

•   _haar_rect	{x=0 y=0 width=0 ...}	cv::Rect_<int>
    _min_neighbours	2	int
    _min_size	30	int
    _img_scale	1.3000000000000000	double
    _scale_factor	1.1000000000000001	double
  

•   _cascade	0x0000000002faea40 {flags=1112539136 count=20 orig_window_size={width=20 height=20 } ...}	CvHaarClassifierCascade *
  

•   small_img_	{flags=1124007936 dims=0 rows=0 ...}	cv::Mat
  

•   storage_	0x0000000000330670 {signature=1116274688 bottom=0x0000000000000000 <NULL> top=0x0000000000000000 <NULL> ...}	CvMemStorage *
    w	0	int