The name of the calibration mapping.
The type of equation to use in order to extract the mapped data.
linear-mapping:physical_value = p0 + p1 * original_sample / (x1-x0)
base-e exponential mapping:p0 + p1 * exp(p2 * original_sample / (x1-x0))
arbitrary-base exponential mapping:physical_value = p0 + p1 * pow(p2, (original_sample / (x1-x0)))
hyperbolic mapping:physical_value = p0 + p1 * sinh(p2 * (original_sample - p3) / (x1-x0))
The p0...pn values in IPngMetadataCalibrationOfPixelValues.equationType.
The type of metadata, this is typically the name of the chunk from which is originates.
The unit name of the resulting data.
The x0 value in IPngMetadataCalibrationOfPixelValues.equationType.
The x1 value in IPngMetadataCalibrationOfPixelValues.equationType.
A metadata entry that indicates that the image contains physical data other than color values, for example a 2D temperature field. The resulting data might be used to construct a reference color bar beside the image, or to extract the original physical data values from the file. It is not expected to affect the way the pixels are displayed.