Emgu CV Library Documentation
cvThreshold Method (src, dst, threshold, max_value, threshold_type)
NamespacesEmgu.CVCvInvokecvThreshold(IntPtr, IntPtr, Double, Double, THRESH)

www.emgu.com/wiki
Applies fixed-level thresholding to single-channel array. The function is typically used to get bi-level (binary) image out of grayscale image (cvCmpS could be also used for this purpose) or for removing a noise, i.e. filtering out pixels with too small or too large values. There are several types of thresholding the function supports that are determined by threshold_type
Declaration Syntax
C#Visual BasicVisual C++
public static void cvThreshold(
	IntPtr src,
	IntPtr dst,
	double threshold,
	double max_value,
	THRESH threshold_type
)
Public Shared Sub cvThreshold ( _
	src As IntPtr, _
	dst As IntPtr, _
	threshold As Double, _
	max_value As Double, _
	threshold_type As THRESH _
)
public:
static void cvThreshold(
	IntPtr src, 
	IntPtr dst, 
	double threshold, 
	double max_value, 
	THRESH threshold_type
)
Parameters
src (IntPtr)
Source array (single-channel, 8-bit of 32-bit floating point).
dst (IntPtr)
Destination array; must be either the same type as src or 8-bit.
threshold (Double)
Threshold value
max_value (Double)
Maximum value to use with CV_THRESH_BINARY and CV_THRESH_BINARY_INV thresholding types
threshold_type (THRESH)
Thresholding type

Assembly: Emgu.CV (Module: Emgu.CV) Version: 1.3.0.0 (1.3.0.0)