Retrieves the value used for threshold filtering operations.
Syntax
HRESULT retVal = object.GetThreshold(pVal);
Parameters
- pVal [out] 
 Type: float- Pointer to the threshold value. 
Remarks
For the threshold filtering adjustment, each sample color channel with a value below pVal*255 is set to 0. Each color channel with a value equal to or over that threshold is set to 255.