The ContrastThreshold applies to individual characters, and in theory if the threshold is higher than the grey level contrast of a character in the run-time image, the character will not be found. When CogOCVMaxPattern.CharacterRegistration is set to Standard, the measure of contrast is exactly that used by CogPMAlignPattern. When CogOCVMaxPattern.CharacterRegistration is set to Correlation, the measure of contrast is an approximation of that used by CogPMAlignPattern: it is approximately the average edge contrast of the character.

public double ContrastThreshold { get; set; }

public double ContrastThreshold { get; set; }

Public Property ContrastThreshold As Double 
	Get 
	Set

Public Property ContrastThreshold As Double 
	Get 
	Set

public:
property double ContrastThreshold {
	double get ();
	void set (double value);
}

public:
property double ContrastThreshold {
	double get ();
	void set (double value);
}