RasterPaletteInterpretationCoercer

Selects the destination interpretation along with the bit depth. Different interpretations allow for different conversion options to be used.

Selects the action to perform when converting an RGBA palette to an RGB palette. The Drop the alpha band option simply discards the alpha component from the palette. The Apply the alpha band option multiplies all RGB values with their corresponding, normalized alpha value.

Selects the action to perform when converting an RGB palette to an RGBA palette:

• Create opaque alpha adds a new alpha component which has the maximum value for the data type in all palette entries.
• Create alpha component from nodata adds a new alpha component which has the maximum value for the data type in all palette entries except the nodata entry. Note that when this option is selected, all selected input bands have a nodata value.

Selects the action to undertake when a conversion between different color types occurs.

• Cast: Uses C-style casts to convert the values.
• Bounded cast: Uses C-style casts to convert the values too, but also validates that the source values fit into the destination type, effectively preventing underflow and overflow; if a source value does not fit, the corresponding destination value will either be set to its type's minimum or maximum value.
• Scale by data values: Finds the minimum and maximum values of the source values and uses them to scale the values to the full range of the destination type.
• Scale by data type: Scales the source values while preserving all proportions in regard to the source and destination types' range.

Specifies the action to perform when converting from a floating-point value to an integer.

• Round rounds to floating-point value to the nearest integer.
• Ceiling gets the next integer which is greater than or equal to the floating-point value.
• Floor gets the next integer which is less than or equal to the floating-point value.