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2022 Fiscal Year Final Research Report

Smartphone-Based Multiband Imaging and Application to Appearance Editing

Research Project

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Project/Area Number 20K11877
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 61010:Perceptual information processing-related
Research InstitutionKobe Institute of Computing / Graduate School of Information Technology

Principal Investigator

Ohtera Ryo  神戸情報大学院大学, 情報技術研究科, 准教授 (50590410)

Project Period (FY) 2020-04-01 – 2023-03-31
Keywordsマルチバンドイメージング / 分光計測 / 分光画像
Outline of Final Research Achievements

In this study, we prototyped a multi-band imaging system using smartphones.
First, we constructed a spectral sensitivity database for the cameras of 20 commercially available smartphone models. The obtained spectral sensitivity database is available at https://ohlab.kic.ac.jp/. Next, as an active light source, we prototyped a compact 7-color LED light source system using high-brightness LEDs and the Arduino. Finally, we proposed a new spectral reflectance estimation method based on linear calculations and confirmed its effectiveness by analyzing images captured using the constructed LED light source system.

Free Research Field

知覚情報処理

Academic Significance and Societal Importance of the Research Achievements

取得する機材の価格や可搬性の低さから,分光情報の実用的価値が認められにくいという大きな問題が背景として存在していたが,本研究の成果は,広く普及しているスマートフォンと,安価なLED照明によって容易かつ気軽に分光画像情報を取得できる第一歩となったと考える.また,取得された分光情報は,農業や医療,芸術など,一般的かつ実用的な用途への幅広い応用が期待できるため,スマートフォンという身近な機器とのシナジーによって,社会的にも大きなインパクトを持つと考えている.

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Published: 2024-01-30  

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