Despeckle Method (ImGearRasterProcessing)

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Shared Sub Despeckle( _
   ByVal page As ImGearRasterPage, _
   ByVal neighborhoodWidth As Integer, _
   ByVal neighborhoodHeight As Integer _
)

'Usage
 
Dim page As ImGearRasterPage
Dim neighborhoodWidth As Integer
Dim neighborhoodHeight As Integer
 
ImGearRasterProcessing.Despeckle(page, neighborhoodWidth, neighborhoodHeight)

public static void Despeckle( 
   ImGearRasterPage page,
   int neighborhoodWidth,
   int neighborhoodHeight
)

public: static void Despeckle( 
   ImGearRasterPage* page,
   int neighborhoodWidth,
   int neighborhoodHeight
)

public:
static void Despeckle( 
   ImGearRasterPage^ page,
   int neighborhoodWidth,
   int neighborhoodHeight
)

Parameters

page: Image to filter.
neighborhoodWidth: Width of the square area.
neighborhoodHeight: Height of the square area.

Despeckle is used to help reduce the amount of noise in the image. Single pixels and pixel spurs on letters and graphics are removed while leaving the solid areas alone. It is typically used on 1-bit document images.

The despeckle operation performs a median filter on the image. For each pixel in the original image, a single pixel is produced in the output image. The output pixel is the median of the pixel values in the neighborhood area defined by neighborhoodWidth and neighborhoodHeight parameters.

C#
Visual Basic

// Despeckle a 1-bit image using a 3x3 area.
ImGearRasterProcessing.Despeckle(igRasterPage, 3, 3);

' Despeckle a 1-bit image using a 3x3 area.
ImGearRasterProcessing.Despeckle(igRasterPage, 3, 3)

Reference

ImGearRasterProcessing Class
ImGearRasterProcessing Members
ImGearRasterPage Class