SetBrightness Method (GdPictureImaging)

In This Topic

Adjust the Brightness in a GdPicture image or in 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 SetBrightness( _

   ByVal ImageID As Integer, _

   ByVal Brightness As Integer _

) As GdPictureStatus

public GdPictureStatus SetBrightness( 

   int ImageID,

   int Brightness

)

public function SetBrightness( 

    ImageID: Integer;

    Brightness: Integer

): GdPictureStatus;

public function SetBrightness( 

   ImageID : int,

   Brightness : int

) : GdPictureStatus;

public: GdPictureStatus SetBrightness( 

   int ImageID,

   int Brightness

)

public:

GdPictureStatus SetBrightness( 

   int ImageID,

   int Brightness

)

Parameters

ImageID: GdPicture image identifier.
Brightness: Brightness adjustment between -100 and 100.

Return Value

A member of the GdPictureStatus enumeration.

Remarks

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

Example

Change image brightness using random value and saves result into a PNG file.

using (GdPictureImaging gdpictureImaging = new GdPictureImaging())

{

    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("input.png");

 

    // Change image brightness using random value. Allowed values are from -100 to +100.

    Random random = new Random();

    int brightness = random.Next(-100, 100);

    gdpictureImaging.SetBrightness(imageID, brightness);

 

    gdpictureImaging.SaveAsPNG(imageID, "output.png");

    gdpictureImaging.ReleaseGdPictureImage(imageID);

}

Reference

GdPictureImaging Class
GdPictureImaging Members
SetROI Method
ResetROI Method
SetBCSG Method