3.2. Image Coordinate Transformation Services
3.2.1. Function
The Image Coordinate Transformation services, alternatively called Image Geometry Model services, describes a group of services that convert image position coordinates between different
Spatial References Systems SRSs. Some service types may have operations that convert the positions of multiple points not just one point at a time.
3.2.2. Results Data
The data resulting from these services output data includes, but are not limited to: 1. Output point position coordinates, in desired SRS
2. Partial derivatives of output position coordinates with respect to input position coordinates optional, see note below
3. Metadata for output position coordinates, including: optional, see note below: 3.1. Output SRS definition is metadata for output positions
3.2. Absolute accuracy estimates for output position coordinates is metadata for output positions
3.3. Relative accuracy estimates for output position coordinates is metadata for output positions
Note: Result metadata is optionally returned to client software, depending on how the service is called. Similarly, partial derivatives are optionally returned to client software. The ability to
produce result metadata and partial derivatives when requested are required capabilities of this service category.
3.2.3. Needed data
The data needed by these services input data includes, but are not limited to, the following: 1. Input point position coordinates, in another SRS
2. Output SRS definition is metadata for output positions 3. Coordinate transformation parameters optional is metadata for SRS or transformation
4. Transformation accuracy estimates, for each SRS transformation when output accuracy is needed is metadata for transformation
5. Elevation data for monoscopic image to ground could be considered metadata for an image? 6. Elevation accuracy estimates when output accuracy is needed is metadata for elevation data
7. Metadata for input position coordinates, including: 7.1. Input SRS definition is metadata for input positions
7.2. Absolute accuracy estimates for input position coordinates when output absolute accuracy is needed is metadata for input positions
7.3. Relative accuracy estimates for input position coordinates when output relative accuracy is needed is metadata for input positions
3.2.4. Service subtypes
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