Edge Detection (ViGrA) imagery_vigra QgsProcessingParameterRasterLayer|INPUT|Input|None|False QgsProcessingParameterRasterDestination|OUTPUT|Edges QgsProcessingParameterEnum|TYPE|Detector type|[0] Canny;[1] Shen-Castan|False|0 QgsProcessingParameterNumber|SCALE|Operator scale|QgsProcessingParameterNumber.Double|1.000000|False|0.000000|None QgsProcessingParameterNumber|THRESHOLD|Gradient threshold|QgsProcessingParameterNumber.Double|1.000000|False|0.000000|None