Raster Image

URL	`http://<rastercatalogitem-url>/image`
Parent Resource	Raster Catalog Item
Required Capability	Image,Catalog

Description

The raster image resource returns a composite image for a single raster catalog item. Users 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, its width and height, and extent.

Apart from the usual response formats of html and json, users can also request a format called image for the image. When users specifies the format of image, 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 besides the actual image.

Resource Hierarchy

Raster Image

Parameters

Parameter	Details
f	Description: 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
bbox	Description: 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. Syntax: `<xmin>, <ymin>, <xmax>, <ymax>` Example: `bbox=-104,35.6,-94.32,41` The `bbox`coordinates should always use a period as the decimal separator even in countries where traditionally a comma is used.
size	Description: The size (width * height) of the exported image in pixels. If the `size` is not specified, an image with a default size of 400 * 400 will be exported. Syntax: `<width>, <height>` Example: `size=600,550`
imageSR	Description: 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	Description: 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	Description: 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, pertains to the type of values stored in the raster, such as signed integer, unsigned integer, or floating point. Integers are whole numbers, whereas 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: `noData=0`
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: `compressionQuality=75`

Example Usage

Example 1: Return Raster Image (f=html) for raster ID 8.

http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Portland/CascadeLandsat/ImageServer/8/image?bbox=378501.375,4825171.125,634687.875,5051974.125&bandIds=0,1,2

Example 2: Return Raster Image (f=image) for raster ID 8 in png8 format.

http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Portland/CascadeLandsat/ImageServer/8/image?bbox=378501.375,4825171.125,634687.875,5051974.125&bandIds=0,1,2&f=image&format=png8

JSON Response Syntax

{
"href" : "<href>",
"width" : <width>,
"height" : <height>,
"extent" : <envelope>
}

JSON Response Example

{
  "href" : "http://sampleserver3a.arcgisonline.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
}