ClearImage COM Server
IsBlankImage Method
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reserved0
Set to 0
reserved1
Set to 0.0
reserved2
Set to 0.0
CiRepair Object : IsBlankImage Method

Description

Is image blank

Syntax

Visual Basic
Public Function IsBlankImage( _
   Optional ByVal reserved0 As Long = 0, _
   Optional ByVal reserved1 As Double = 0, _
   Optional ByVal reserved2 As Double = 0 _
) As EBoolean

Parameters

reserved0
Set to 0
reserved1
Set to 0.0
reserved2
Set to 0.0

Remarks

Blank pages normally occur in duplex scanning when both sides of the page are scanned.    
Image is not blank if it has black pixels after ignoring the following image elements:   

Margins - Black pixels   inside the following margin

  • for sides larger than 7 inches the margin will be 1 inch
  • for sides between 5 and 7 inches the margin will be 0.5 inch
  • for smaller sides there will be no margin

Noise  -   Sspeckles of 5x5 pixels and smaller

Object -  Single object smaller than 0.5 x 0.5 inch in size

Note:  Image should have correct values for vertical and horizontal resolution for proper calculations of margins and object size.
Parameters should be set to 0.

See Also

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