ScaleRedComponent Method (GdPictureImaging)

In This Topic

Scales the red color component of a GdPicture image or of an area of a GdPicture image defined by SetROI() method.

Syntax

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

'Declaration
 
Public Function ScaleRedComponent( _
   ByVal ImageID As Integer, _
   ByVal Factor As Single _
) As GdPictureStatus

public GdPictureStatus ScaleRedComponent( 
   int ImageID,
   float Factor
)

public function ScaleRedComponent( 
    ImageID: Integer;
    Factor: Single
): GdPictureStatus;

public function ScaleRedComponent( 
   ImageID : int,
   Factor : float
) : GdPictureStatus;

public: GdPictureStatus ScaleRedComponent( 
   int ImageID,
   float Factor
)

public:
GdPictureStatus ScaleRedComponent( 
   int ImageID,
   float Factor
)

Parameters

ImageID: GdPicture image identifier.
Factor: Scale factor.

Return Value

A member of the GdPictureStatus enumeration.

Remarks

This method is used in the "Image Processing" Demo.

Example

Rescaling the red component in an image and saving as a png.

using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", false);
    gdpictureImaging.ScaleRedComponent(imageID, 2);
    gdpictureImaging.SaveAsPNG(imageID, "output.png");
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}

Reference

GdPictureImaging Class
GdPictureImaging Members
SetROI Method
ResetROI Method