An image coordinate system defines the spatial reference in terms of a primary image. A primary image displayed in its own image coordinate system exhibits no distortions; other images and features can be projected to overlap with the primary image using its image coordinate system. Many imagery-centric workflows require displaying images in image coordinate systems instead of map coordinates (geographic or projected coordinate systems); for example, oblique images are distorted significantly when displayed in map coordinates but can be displayed nicely in a top-up view without distortions.
Only image services support image coordinate systems. To get an image's image coordinate system, use Raster ICS; to project geometries between a geographic or projected coordinate system and an image coordinate system, use Project. Image coordinate systems can be used in image service operations when spatial reference or geometry parameters are needed.
{
"icsid": <icsid> //an ics id is the objectid of the image in a mosaic dataset.
}{
"icsid": 9,
}