Digital imaging as a detector for quantitative colorimetric analyses

Liam Byrne; Kim Lau; Steve Edwards; Dermot Diamond

doi:10.1117/12.417460

26 February 2001 Digital imaging as a detector for quantitative colorimetric analyses

Liam Byrne, Kim Lau, Steve Edwards, Dermot Diamond

Proceedings Volume 4205, Advanced Environmental and Chemical Sensing Technology; (2001) https://doi.org/10.1117/12.417460
Event: Environmental and Industrial Sensing, 2000, Boston, MA, United States

Abstract

In this paper, a digital imaging system was used to analyze a series of colorimetric reagent dots. A commercially available digital camera was used with in-house developed software to capture and analyze data. The color captured was digitized and broken down into three 8-bit color values (red, green and blue). The data was then processed to generate distinct recognizable patterns that represent the original color input. A pH indicator sensor array was used to demonstrate the practicality of the system. Preliminary results show that the system is able to discriminate samples over a wide pH range (pH 1-13) and resolve samples to within ± 0.5 pH units.

Citation Download Citation

Liam Byrne, Kim Lau, Steve Edwards, and Dermot Diamond "Digital imaging as a detector for quantitative colorimetric analyses", Proc. SPIE 4205, Advanced Environmental and Chemical Sensing Technology, (26 February 2001); https://doi.org/10.1117/12.417460

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