This .NET class wraps the AcDbRasterImageDef ObjectARX class. 

The RasterImageDef object (or "image definition object") works with the RasterImage entity (or "image entity") to implement raster images inside AutoCAD. The relationship between these two classes is much like the relationship between an AutoCAD block definition object and a block insert entity. 

The image definition object plays a behind-the-scenes role like the block definition, maintaining links to the source image file and managing low-level image processing operations required to display and plot images. Image definition objects are stored in a special Dictionary named ISM_RASTER_IMAGE_DICT. These objects are not AutoCAD entities, so they can't be displayed or selected directly by the end user. They handle only 2D pixel coordinates, so all image processing requests must be expressed as 2D operations. 

Image processing operations like scaling and rotating the image for display are executed by the Autodesk Image Engine. The Image Engine has its own extensive developer API on which sophisticated image editing applications can be built. (Information on the Autodesk Image Engine is available through the Autodesk Developer Program.) 

Refer to the description of class RasterImage for more information.

Autodesk.AutoCAD.DatabaseServices.DBObject
    Autodesk.AutoCAD.DatabaseServices.RasterImageDef

Public Class RasterImageDef
Inherits DBObject

public class RasterImageDef : DBObject;

DBObject, RasterImage, RasterImageDefReactor, RasterVariables