'Declaration
 
Public Overloads MustOverride Function DetectBlankPage( _
   ByVal maximumNoiseObjectSize As Integer, _
   ByVal ignoreHolePunches As Boolean _
) As Boolean

'Usage
 
Dim instance As ImGearOCRImage
Dim maximumNoiseObjectSize As Integer
Dim ignoreHolePunches As Boolean
Dim value As Boolean
 
value = instance.DetectBlankPage(maximumNoiseObjectSize, ignoreHolePunches)

public abstract bool DetectBlankPage( 
   int maximumNoiseObjectSize,
   bool ignoreHolePunches
)

public: abstract bool DetectBlankPage( 
   int maximumNoiseObjectSize,
   bool ignoreHolePunches
) 

public:
abstract bool DetectBlankPage( 
   int maximumNoiseObjectSize,
   bool ignoreHolePunches
) 

Parameters

maximumNoiseObjectSize

Specifies the maximum size of an object on the page for it to be disregarded as noise. Object here means a connected group of black pixels after binarization. The object size is a diagonal of the minimum circumscribed rectangle that contains the object. Default value is 12.

ignoreHolePunches

Setting this to true will attempt to detect and remove hole punches from the page before determining if the page is blank. May increase processing time for dot-shaded documents. Default value is false.

Return Value

This method will consider an image to be blank (all or mostly white) if there is only a small percentage of noise, especially noise around the edge of the image usually created as a result of scanning.

This method is intended for use on scanned documents and not pictures or photographs.

Reference

ImGearOCRImage Class
ImGearOCRImage Members
Overload List