Interpolation

The Interpolation operator increases raster resolution by interpolating values of an input raster.

If queried with a resolution that is coarser than the input resolution, interpolation is not applicable and an error is returned.

Inputs

The Interpolation operator expects exactly one raster input.

Resolution

The target resolution can be specified either as an explicit Resolution (in pixel units) or as a Fraction that scales the input resolution.

// Scale the input resolution by a factor of 2 in both x and y directions
InterpolationResolution::Fraction(Fraction { x: 2.0, y: 2.0 })

// Use an explicit resolution of 50×50 pixel units
InterpolationResolution::Resolution(SpatialResolution { x: 50.0, y: 50.0 })

Parameters

Name	Type	Description	Examples
interpolation	InterpolationMethod	Interpolation method.
outputResolution	InterpolationResolution	Target output resolution.
outputOriginReference	null or Coordinate2D

Sources

Name	Type	Description
raster	RasterOperator	An operator that produces raster data.

Examples

{
    "type": "Interpolation",
    "params": {
        "interpolation": "nearestNeighbor",
        "outputResolution": {
            "type": "fraction",
            "x": 2,
            "y": 2
        }
    },
    "sources": {
        "raster": {
            "type": "MultiBandGdalSource",
            "params": {
                "data": "sentinel-2-l2a_EPSG32632_U8_20"
            }
        }
    }
}