'Declaration

Public Sub DetectBorder( _
   ByVal borderSize
Size of border around the image. Possible values: 0 - 100. Default value is 5.
 As Integer _
)

public void DetectBorder(
   int borderSize
)

public: void DetectBorder(
   int borderSize
)

public:
void DetectBorder(
   int borderSize
)

Parameters

borderSize

Size of border around the image. Possible values: 0 - 100. Default value is 5.

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.

Please see example here: AcquiredImage.

Target Platforms: .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)
Deskew(TwainBorderColor,Int32,Int32)