Back-compatible Color QR Codes for colorimetric applications

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Ismael Benito-Altamirano, David Martínez-Carpena, Olga Casals, Cristian Fàbrega, Andreas Waag, Joan Daniel Prades

Published: 01 Jan 2023, Last Modified: 11 Apr 2025Pattern Recognit. 2023EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Highlights•Color correction often relies on color charts that can accomodate limited colors (10 s).•QR Codes can be used to accomodate a large number of color samples (1000 s).•QR Code have compact form factor (a few inches) while chart have a wide factor form.•Our grayscale affinity to black and white during color mapping is fully back-compatible.•Grayscale method leads to much higher readability in adversarial opticial conditions.