Use OpenCV Threshold with Kinect Image

Question

I\'m trying to use the OpenCV Threshold with the depthImage retrieved by the OpenCV VideoCapture module, but I get the following error:

OpenCV Error:

Answer 1

To start things off, you are mixing the C interface with the C++ interface, and they shouldn't be mixed together!

cv::Mat belongs to the C++ interface, and cvThreshold() belongs to the C. You should use cv::threshold() instead:

double cv::threshold(const Mat& src, Mat& dst, double thresh, double maxVal, int thresholdType)

Parameters:

src – Source array (single-channel, 8-bit of 32-bit floating point)
dst – Destination array; will have the same size and the same type as src
thresh – Threshold value
maxVal – Maximum value to use with THRESH_BINARY and THRESH_BINARY_INV thresholding types
thresholdType – Thresholding type (see the discussion)