fxRemoveBackgroundChromaKey Method (GdPictureImaging)

In This Topic

Sets the Red, Green or Blue background color as transparent in a GdPicture image or in area of a GdPicture image defined by SetROI() method. This method is particularly accurate to remove the Green, Blue or Red background of a photo.

Syntax

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

'Declaration

 

Public Function fxRemoveBackgroundChromaKey( _

   ByVal ImageID As Integer, _

   ByVal Component As ColorKey, _

   ByVal Variation As Integer, _

   ByVal MinKeyValue As Integer _

) As GdPictureStatus

public GdPictureStatus fxRemoveBackgroundChromaKey( 

   int ImageID,

   ColorKey Component,

   int Variation,

   int MinKeyValue

)

public function fxRemoveBackgroundChromaKey( 

    ImageID: Integer;

    Component: ColorKey;

    Variation: Integer;

    MinKeyValue: Integer

): GdPictureStatus;

public function fxRemoveBackgroundChromaKey( 

   ImageID : int,

   Component : ColorKey,

   Variation : int,

   MinKeyValue : int

) : GdPictureStatus;

public: GdPictureStatus fxRemoveBackgroundChromaKey( 

   int ImageID,

   ColorKey Component,

   int Variation,

   int MinKeyValue

)

public:

GdPictureStatus fxRemoveBackgroundChromaKey( 

   int ImageID,

   ColorKey Component,

   int Variation,

   int MinKeyValue

)

Parameters

ImageID: GdPicture image identifier.
Component: A member of the ColorKey enumeration defining the color to remove (can be Red, Blue or Green).
Variation: Variation between 0 and 512. 0 means no possible variation of the color key. Suggest value is 240, higher can result with non removed background space.
MinKeyValue: Specifies the minimum value of the component. Must be a value between 0 and 255. Default value is 25 for dark background, 50 for standard background and 80 for background with high luminosity.

Return Value

A member of the GdPictureStatus enumeration.

Reference

GdPictureImaging Class
GdPictureImaging Members
SetROI Method
ResetROI Method