Evidence map›Paper›PMID 33281134›Full record

ArticleAnalytical sciences : the international journal of the Japan Society for Analytical Chemistry2021

Inner Product of RGB Unit Vectors for Simple and Versatile Detection of Color Transition.

Naoya Kakiuchi, Junya Ochiai, Masaki Takeuchi, Hideji Tanaka

Abstract read
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In one paragraph

Article in Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. The usage of color coordinates preserved in microscopic image for elucidation on chemical behavior in confined micro-/nano-spaces.Analytical sciences : the international journal of the Japan Society for Analytical Chemistry · 2025
    Review
  2. Inner product of RGB unit vectors for detecting color transition: application to feedback-based flow ratiometric titration.Analytical sciences : the international journal of the Japan Society for Analytical Chemistry · 2022
    Article
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Naoya KakiuchiGraduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1, Shomachi, Tokushima, 770-8505, Japan.
Junya OchiaiFaculty of Pharmaceutical Sciences, Tokushima University, 1-78-1, Shomachi, Tokushima, 770-8505, Japan.
Masaki TakeuchiGraduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1, Shomachi, Tokushima, 770-8505, Japan.
Hideji TanakaGraduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1, Shomachi, Tokushima, 770-8505, Japan. h.tanaka@tokushima-u.ac.jp.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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.

Indexed as

digital microscopeflow ratiometryflow titrationImage-based colorimetryinner productRGB

Identifiers

PMID33281134

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.