MeasureSkew Method

Description

Measure image skew

Syntax

Visual Basic
Public Function MeasureSkew() As Double

Return Type

The returned value is in the range from -45 degrees to 45 degrees. If the value is negative, the image is skewed counterclockwise.

Remarks

Measures image or zone skew relative to the nearest vertical or horizontal axis.
rConfidence property contains confidence level in percents.

Example

Measure Skew and Rotation

VB Sample (VB6)

Sub MeasureSkewRotation(imageFile As String)
      ' Open image file
  Dim Ci As New CiServer
  Dim Tools As CiTools: Set Tools = Ci.CreateTools
  Tools.Image.Open imageFile
      ' Do processing
  Dim skew As Double, rot As EPageRotation
  skew = Tools.MeasureSkew
  Debug.Print "Skew=" & skew & "   Confidence=" & Tools.rConfidence & "%" & vbCrLf
  rot = Tools.MeasureRotation
  Debug.Print "Rotation=" & _
     Switch(rot = ciRotUnknown, "Unknown", _
              rot = ciRotNone, "None", _
              rot = ciRotLeft, "TurnedLeft", _
              rot = ciRotRight, "TurnedRight", _
              rot = ciRotUpsideDown, "UpsideDown", _
              rot = ciRotLeftOrRight, "TurnedLeftOrRight", _
              rot = ciRotPortrait, "Portrait") & _
      "   Confidence=" & Tools.rConfidence & "%"
End Sub