Center for Spatial Information Science and Systems (CSISS)
CSISS Geospatial Web Services index

Raster_EdgeDetectionService

This service provides Zero-crossing "edge detection" raster function for image processing.

Operation:

edge_detection - Finds the "edges" in the image. The algorithm used for edge detection is one of the "zero-crossing" algorithms.

Request Parameters:

sourceURL
URL of input raster map
Default format: GeoTIFF
width
x-y extent of the Gaussian filter
Parameter format: integer
Default: 9
threshold
sensitivity of Gaussian filter
Parameter format: float
Default: 10.0
orientations
number of azimuth directions categorized
Parameter format: integer
Default: 1
outputGeoTiffType
Type of output GeoTIFF file. The output Format Type is specified as GeoTIFF
Parameter format: string
Options: Byte,Int16,UInt16,UInt32,Int32,Float32,Float64,CInt16,CInt32,CFloat32,CFloat64

Response Parameters:

returnURL
URL of zero crossing raster map
returnFormat
Format of output raster map
Default: GeoTIFF

For further informations

ServiceLocation
WSDL
JavaInterface

See also GRASS command

i.zc


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