Deskew(TwainBorderColor,Int32,Int32) Method (AcquiredImage)

In This Topic

Deskew an image, i.e. detects a correct position of image.

Syntax

'Declaration

Public Sub Deskew( _
   ByVal borderColorFree space around rotated image will be filled with this color.
 As Vintasoft.WpfTwain.ImageProcessing.TwainBorderColor, _
   ByVal scanIntervalXSpecifies scan interval for X axis. Recommended value is 1.
 As Integer, _
   ByVal scanIntervalYSpecifies scan interval for X axis. Recommended value is 1.
 As Integer _
)

public void Deskew(
   Vintasoft.WpfTwain.ImageProcessing.TwainBorderColor borderColor, 
   int scanIntervalX, 
   int scanIntervalY
)

public: void Deskew(
   Vintasoft.WpfTwain.ImageProcessing.TwainBorderColor borderColor, 
   int scanIntervalX, 
   int scanIntervalY
)

public:
void Deskew(
   Vintasoft.WpfTwain.ImageProcessing.TwainBorderColor borderColor, 
   int scanIntervalX, 
   int scanIntervalY
)

Parameters

borderColor: Free space around rotated image will be filled with this color.
scanIntervalX: Specifies scan interval for X axis. Recommended value is 1.
scanIntervalY: Specifies scan interval for X axis. Recommended value is 1.

Remarks

Here is a "good" sequence of operations for image processing:
1. Despeckle an image (Despeckle(Int32,Int32,Int32,Int32) method)
2. Deskew an image (Deskew(TwainBorderColor,Int32,Int32) method)
3. Detect image border (DetectBorder(Int32) method)

Possible values for scanIntervalX and scanIntervalY parameters: 1 - every column (row) will be scanned, 2 - every second column (row) will be scanned, 3 - every third column (row) will be scanned, and so on. Big values of these parameters may speed up deskewing process, but may worsen results.

Example

Please see example here: AcquiredImage.

Requirements

Target Platforms: .NET 10; .NET 9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

Reference

AcquiredImage Class
AcquiredImage Members

Despeckle(Int32,Int32,Int32,Int32)
DetectBorder(Int32)

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