DicomSetWindowLevel Method (GdPictureImaging)

In This Topic

Changes the current window level of a DICOM image by applying VOI LUT transformation.

Syntax

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

'Declaration
 
Public Function DicomSetWindowLevel( _
   ByVal ImageID As Integer, _
   ByVal WindowWidth As Single, _
   ByVal WindowLevel As Single _
) As GdPictureStatus

public GdPictureStatus DicomSetWindowLevel( 
   int ImageID,
   float WindowWidth,
   float WindowLevel
)

public function DicomSetWindowLevel( 
    ImageID: Integer;
    WindowWidth: Single;
    WindowLevel: Single
): GdPictureStatus;

public function DicomSetWindowLevel( 
   ImageID : int,
   WindowWidth : float,
   WindowLevel : float
) : GdPictureStatus;

public: GdPictureStatus DicomSetWindowLevel( 
   int ImageID,
   float WindowWidth,
   float WindowLevel
)

public:
GdPictureStatus DicomSetWindowLevel( 
   int ImageID,
   float WindowWidth,
   float WindowLevel
)

Parameters

ImageID: GdPicture image identifier. The DICOM image.
WindowWidth: The window width. Should be a value in the range 1 ; DicomGetMaxWindowWidth().
WindowLevel: The window level. Should be a value in the range DicomGetMinWindowLevel() ; DicomGetMaxWindowLevel().

Return Value

A member of the GdPictureStatus enumeration.

Remarks

An example of this method can be seen on the DICOM Viewer demo application.

Example

Saving the first page of a dicom document to jpeg using different window levels.

using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.dcm", false);
 
    // Read the dicom properties.
    float windowWidth = gdpictureImaging.DicomGetDefaultWindowWidth(imageID);
    float windowLevel = gdpictureImaging.DicomGetMinWindowLevel(imageID);
    float maxWindowLevel = gdpictureImaging.DicomGetMaxWindowLevel(imageID);
 
    // Save different views as jpeg.
    float step = (maxWindowLevel - windowLevel) / 10;
    while (windowLevel <= maxWindowLevel)
    {
        gdpictureImaging.DicomSetWindowLevel(imageID, windowWidth, windowLevel);
        gdpictureImaging.SaveAsJPEG(imageID, "image" + windowLevel.ToString() + ".jpg", 75);
        windowLevel += step;
    }
 
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}

Reference

GdPictureImaging Class
GdPictureImaging Members