Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1, Shomachi, Tokushima, 770-8505, Japan.
Faculty of Pharmaceutical Sciences, Tokushima University, 1-78-1, Shomachi, Tokushima, 770-8505, Japan.
Anal Sci. 2021 Jan 10;37(1):3-5. doi: 10.2116/analsci.20C015. Epub 2020 Dec 4.
We propose a novel concept for detecting color transition by the inner product (IP) of RGB unit vectors. A digital microscope-based detector and a Visual Basic program were developed in-house. The concept is applied to indicator-based flow titration. The IP is 1 or < 1 if the vector's direction is the same or different, respectively. The IP's change can be used as a criterion for the indicator's color transition. The present IP-based approach is simple, economical, and versatile because it is applicable to any color transition without selecting an analytical wavelength.
我们提出了一种通过 RGB 单位向量内积（IP）检测颜色转变的新方法。开发了基于数字显微镜的检测器和一个 Visual Basic 程序。该方法应用于指示剂基流动滴定。如果向量方向相同或不同，IP 分别为 1 或 < 1。IP 的变化可用作指示剂颜色转变的标准。目前的基于 IP 的方法简单、经济且用途广泛，因为它适用于任何颜色转变，而无需选择分析波长。
