ImageGear .NET v25.2 - Updated
LoadOverlay(ImGearPage,Boolean) Method




ImageGear.Formats.Dicom Assembly > ImageGear.Formats.DICOM Namespace > ImGearDICOM Class > LoadOverlay Method : LoadOverlay(ImGearPage,Boolean) Method
Page from which to load overlay planes.
Specifies whether to create overlays using legacy ImageGear.ART.ImGearARTImageEmb or new ImageGear.ART.ImGearARTImage mark. As far as in ImageGear for Silverlight ImageGear.ART.ImGearARTImageEmb mark is not available, this parameter in case of Silverlight framework must be false, otherwise ImageGear.Core.ImGearException will be thrown, indicating wrong usage.
Loads overlay planes from DICOM metadata of the specified page, taking into account useLegacyMarks flag.
Syntax
'Declaration
 
Public Overloads Shared Function LoadOverlay( _
   ByVal source As ImGearPage, _
   ByVal useLegacyMarks As Boolean _
) As ImGearARTPage
'Usage
 
Dim source As ImGearPage
Dim useLegacyMarks As Boolean
Dim value As ImGearARTPage
 
value = ImGearDICOM.LoadOverlay(source, useLegacyMarks)
public static ImGearARTPage LoadOverlay( 
   ImGearPage source,
   bool useLegacyMarks
)
public: static ImGearARTPage* LoadOverlay( 
   ImGearPage* source,
   bool useLegacyMarks
) 
public:
static ImGearARTPage^ LoadOverlay( 
   ImGearPage^ source,
   bool useLegacyMarks
) 

Parameters

source
Page from which to load overlay planes.
useLegacyMarks
Specifies whether to create overlays using legacy ImageGear.ART.ImGearARTImageEmb or new ImageGear.ART.ImGearARTImage mark. As far as in ImageGear for Silverlight ImageGear.ART.ImGearARTImageEmb mark is not available, this parameter in case of Silverlight framework must be false, otherwise ImageGear.Core.ImGearException will be thrown, indicating wrong usage.

Return Value

New ImageGear.ART.ImGearARTPage class with annotations loaded from overlay data.
Remarks
Loads overlay planes from DICOM metadata (DataSet), attached to the image, and creates ART marks of type either ImageGear.ART.ImGearARTImage or ImageGear.ART.ImGearARTImageEmb class for each overlay plane. Each mark is placed in a separate ART group.

Overlay planes do not support specifying the colors (even black or white). An overlay pixel can only be visible or invisible. All visible overlay pixels are displayed with the same color, which is specified by the application and not stored in the DICOM DataSet. By default ImageGear uses yellow color to display overlays. The application can change overlay color by going through all marks in the ImageGear.ART.ImGearARTPage class and changing palette of either ImageGear.ART.ImGearARTImage or ImageGear.ART.ImGearARTImageEmb class marks.

See Also

Reference

ImGearDICOM Class
ImGearDICOM Members
Overload List
ImGearRasterPage Class
ImGearARTPage Class
ImGearARTImage Class
ImGearARTImageEmb Class

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