<esri:ArcGISImageServiceLayer Url="http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/World/MODIS/ImageServer" > <esri:ArcGISImageServiceLayer.MosaicRule> <esri:MosaicRule MosaicMethod="esriMosaicCenter" /> </esri:ArcGISImageServiceLayer.MosaicRule> </esri:ArcGISImageServiceLayer>