- URL:https://<rastercatalogitem-url>/image
- Required Capability:Image, Catalog
- Version Introduced:10.0
Description
License:
You must license your ArcGIS Server as an ArcGIS Image Server to use this resource.
The image resource returns a composite image for a single raster catalog item. You can use this resource for generating dynamic images based on a single catalog item. This resource provides information about the exported image, such as its URL, width and height, and extent.
Apart from the usual response formats of html and json, you can also request a format named image for the image. When you specify image as the format, the server responds by directly streaming the image bytes to the client. With this approach, you don't get any information associated with the image other than the actual image.
Request parameters
| Parameter | Details |
|---|---|
| bbox | The extent (bounding box) of the exported image. Unless the bboxSR parameter has been specified, the bbox is assumed to be in the spatial reference of the image service. Note:The bbox coordinates should always use a period as the decimal separator, even in countries where a comma is traditionally used. Syntax Example |
| size | The size (width and height) of the exported image in pixels. If the size is not specified, an image with a default size of 400x400 will be exported. Syntax Example |
| imageSR | The spatial reference of the exported image. The spatial reference can be specified as either a well-known ID or as a spatial reference JSON object. If the imageSR is not specified, the image will be exported in the spatial reference of the image service. |
| bboxSR | The spatial reference of the bbox. The spatial reference can be specified as either a well-known ID or as a spatial reference JSON object. If the bboxSR is not specified, the bbox is assumed to be in the spatial reference of the image service. |
| format | The format of the exported image. The default format is png. Values: png | png8 | png24 | jpg | bmp | gif |
| pixelType | The pixel type, also known as data type, that pertains to the type of values stored in the raster, such as signed integer, unsigned integer, or floating point. Integers are whole numbers; floating points have decimals. Values: C128 | C64 | F32 | F64 | S16 | S32 | S8 | U1 | U16 | U2 | U32 | U4 | U8 | UNKNOWN |
| noData | The pixel value representing no information. Example |
| interpolation | The resampling process of extrapolating the pixel values while transforming the raster dataset when it undergoes warping or when it changes coordinate space. Values: RSP_BilinearInterpolation | RSP_CubicConvolution | RSP_Majority | RSP_NearestNeighbor |
| compressionQuality | Controls how much loss the image will be subjected to by the compression algorithm. Valid value ranges of compression quality are from 0 to 100. Example |
| f | The response format. The default response format is html. If the format is image, the image bytes are directly streamed to the client. Values: html | json | image |
Example usage
The following is a sample request URL used to return a raster image (response format set as html) for raster ID 8:
https://machine.domain.com/webadaptor/rest/services/Portland/CascadeLandsat/ImageServer/8/image?bbox=378501.375,4825171.125,634687.875,5051974.125&bandIds=0,1,2The following is a sample request URL used to return a raster image (response format set as image) for raster ID 8 in a png8 format:
https://machine.domain.com/webadaptor/rest/services/Portland/CascadeLandsat/ImageServer/8/image?bbox=378501.375,4825171.125,634687.875,5051974.125&bandIds=0,1,2&f=image&format=png8JSON Response syntax
{
"href": "<href>",
"width": <width>,
"height": <height>,
"extent": <envelope>
}JSON Response example
{
"href" : "https://machine.domain.com/arcgisoutput/_ags_336971124.png",
"width" : 400,
"height" : 400,
"extent" : {
"xmin" : 7585040,
"ymin" : 695086,
"xmax" : 7590710,
"ymax" : 700756,
"spatialReference" : {
"wkt" : "PROJCS[\"NAD_1983_HARN_StatePlane_Oregon_North_FIPS_3601\",GEOGCS[\"GCS_North_American_1983_HARN\",DATUM[\"D_unknown\",SPHEROID[\"North_American_1983_HARN\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Lambert_Conformal_Conic\"],PARAMETER[\"false_easting\",8202099.737532808],PARAMETER[\"false_northing\",0.0],PARAMETER[\"central_meridian\",-120.5],PARAMETER[\"standard_parallel_1\",44.33333333333334],PARAMETER[\"standard_parallel_2\",46.0],PARAMETER[\"latitude_of_origin\",43.66666666666666],UNIT[\"Foot\",0.3048]]"
}
},
"scale" : 0
}