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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/193025
Machine-readable pattern for colorimetric sensor interrogation
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We present a systematic methodology to generate machine-readable patterns embodying all the elements needed to carry out colorimetric measurements with conventional color cameras in an automated, robust and accurate manner. Our approach relies on the well-stablished machine-readable features of the QR Codes, to detect the pattern, identify the color reference elements and the colorimetric spots, to calibrate the color of the image and to conclude a quantitative measurement. We illustrate our approach with a NH3 colorimetric indicator operating at distinct color temperature ambient lights, demonstrating that with our design, consistent measurements can be achieved, with independence on the illumination conditions.
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BENITO ALTAMIRANO, Ismael, et al. Machine-readable pattern for colorimetric sensor interrogation. MDPI Proceedings. 2018. Vol. 2, num. 13, pags. 906. ISSN 2504-3900. [consulted: 7 of June of 2026]. Available at: https://hdl.handle.net/2445/193025