On the conversion from OSA-UCS to CIEXYZ

TL;DR

This paper revisits and corrects an algorithm for converting OSA-UCS to CIEXYZ, demonstrating that large-scale conversions can be performed quickly and accurately.

Contribution

It provides corrected functions and initial guesses for the conversion algorithm, enabling fast and precise large-scale coordinate transformations.

Findings

Conversion of hundreds of thousands of coordinates takes less than a second

The corrected algorithm achieves full accuracy in conversions

Provides improved initial guesses and functions for the conversion process

Abstract

This article revisits Kobayasi's and Yosiki's algorithm for conversion of OSA-UCS into XYZ cooordinates. It corrects some mistakes on the involved functions and initial guesses and shows that that hundreds of thousands of coordinates can be converted in less than a second with full accuracy.