1. A computer-implemented calibration method for calibrating a High Dynamic Range (HDR) device having a HDR device input and a HDR device output, comprising: receiving input chromatic data, wherein the input chromatic data exists in a first color gamut; mapping the input chromatic data into calibrated chromatic data using calibration information retrieved from a database, wherein the database includes octree data structures that represent a spatial sampling of a calibration function and wherein the calibrated chromatic data exists in a second color gamut; providing the calibrated chromatic data to the HDR device input; and generating, at the HDR device output, a measurable output based on the calibrated chromatic data.