MUKUNOKI Masayuki

写真a

Affiliation

Engineering educational research section Information and Communication Technology Program

Title

Professor

External Link

Degree 【 display / non-display

  • Doctor(Enginnering) ( 1999.7   Kyoto University )

Research Areas 【 display / non-display

  • Informatics / Intelligent informatics

  • Informatics / Perceptual information processing

  • Informatics / Perceptual information processing

 

Papers 【 display / non-display

  • Development of a system to detect eye position abnormality based on eye-tracking Reviewed

    Uchida N., Takatuka K., Yamaba H., Mukunoki M., Okazaki N.

    Journal of Robotics, Networking and Artificial Life   8 ( 3 )   205 - 210   2021.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Journal of Robotics, Networking and Artificial Life  

    In previous research, we developed a method to automate the conventional evaluation of eye misalignment (cover test) and distinguish misaligned eyes from their movements. However, this method had the problem that vertical eye movements were affected by the eyelids and eyelashes, and could not be completely detected. To solve this problem, we have developed another method to recognize abnormalities by observing only the movement near the center of the pupil.

    DOI: 10.2991/jrnal.k.210922.011

    Scopus

  • リレーアタック耐性とボット耐性の両立を目指したインタラクティブな動画CAPTCHAの提案と評価 Reviewed

    油田 健太郎, 臼崎 翔太郎, 山場 久昭, 片山 徹郎, 椋木 雅之, 朴 美娘, 岡崎直宣

    情報処理学会論文誌   62 ( 12 )   1864 - 1878   2021.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  • Proposal and evaluation for color constancy CAPTCHA Reviewed

    Usuzaki S., Aburada K., Yamaba H., Katayama T., Mukunoki M., Park M., Okazaki N.

    Artificial Life and Robotics   26 ( 3 )   291 - 296   2021.3

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Artificial Life and Robotics  

    CAPTCHAs are technologies that distinguish humans and bot to prevent illegal access. Unfortunately, current CAPTCHAs, even the latest Google reCAPTCHA, have already broken with high accuracy. Although the devices, including emphasizing the distortion of the text and adding noise to the image, improve the machine resistance, they may decrease the accessibility of the web page. The purpose of this study is to propose a new CAPTCHA that can decrease the machine resistance while keeping usability. To achieve this purpose, we focused on color constancy. Color constancy is a human’s characteristic that enables humans to recognize the original color of the object by ignoring the effects of illumination light. Color constancy has not been fully reproduced by the program yet. We proposed color constancy CAPTCHA that the user is required to answer an original color of the object in a specified area on the CAPTCHA image with a color filter. In this paper, we created a prototype of CAPTCHA, applied two kinds of color filters, and then evaluated each case for the human success rate, machine success rate, and usability.

    DOI: 10.1007/s10015-021-00679-x

    Scopus

  • FMD-VS: A virtual sensor to index FMD virus scattering Reviewed

    Takatsuka K., Sekiguchi S., Yamaba H., Aburada K., Mukunoki M., Okazaki N.

    PLoS ONE   15 ( 9 September )   2020.9

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:PLoS ONE  

    © 2020 Takatsuka et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Foot-and-mouth disease (FMD) models—analytical models for tracking and analyzing FMD outbreaks—are known as dominant tools for examining the spread of the disease under various conditions and assessing the effectiveness of countermeasures. There has been some remarkable progress in modeling research since the UK epidemic in 2001. Several modeling methods have been introduced, developed, and are still growing. However, in 2010 when a FMD outbreak occurred in the Miyazaki prefecture, a crucial problem reported: Once a regional FMD outbreak occurs, municipal officials in the region must make various day-today decisions throughout this period of vulnerability. The deliverables of FMD modeling research in its current state appear insufficient to support the daily judgments required in such cases. FMD model can be an efficient support tool for prevention decisions. It requires being conversant with modeling and its preconditions. Therefore, most municipal officials with no knowledge or experience found full use of the model difficult. Given this limitation, the authors consider methods and systems to support users of FMD models who must make real-time epidemic-related judgments in the infected areas. We propose a virtual sensor, designated “FMD-VS,” to index FMD virus scattering in conditions where there is once a notion of FMD; and (2) shows how we apply the developed FMD-VS technique during an outbreak. In (1), we show our approach to constructing FMD-VS based on the existing FMD model and offer an analysis and evaluation method to assess its performance. We again present the results produced when the technique applied to 2010 infection data from the Miyazaki Prefecture. For (2), we outline the concept of a method that supports the prevention judgment of municipal officials and show how to use FMD-VS.

    DOI: 10.1371/journal.pone.0237961

    Scopus

  • Proposal for Rotating 3D Text-based CAPTCHA Using Subjective Contour Reviewed

    USUZAKI Shotaro, ABURADA Kentaro, YAMABA Hisaaki, KATAYAMA Tetsuro, MUKUNOKI Masayuki, PARK Mirang, OKAZAKI Naonobu

    J103-B ( 8 )   332 - 343   2020.8

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    In this study, we propose a CAPTCHA to improve the usability of the text-based method. This CAPTCHA shows only the side of the 3D characters rotate vertically or horizontally. Users need to input characters rotating in the specified direction to pass it. Humans can recognize the subjective contours of characters but machines cannot recognize them only seeing the shade. Our experiment result shows that the human success rate exceeded the average success rate of the existing method, and the usability is as high as the image-based CAPTCHA. We need to consider more obstruction to reduce attack accuracy against this CAPTCHA.

    DOI: 10.14923/transcomj.2019wfp0007

    CiNii Research

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MISC 【 display / non-display

  • 背景モデル構築のための画像類似性と時間的スパース性を考慮した画像選択法

    清水渚佐;川西康友;椋木雅之;美濃導彦

    情報処理学会研究報告(CD-ROM)   2012 ( 6 )   ROMBUNNO.CVIM-186,NO.12   2013.4

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

    J-GLOBAL

  • “ 画像からの物体検出と物体領域分割の統合手法”

    Jarich Vansteenberge,椋木雅之,美濃導彦

    ICT イノベーショ ン2013,2013-02   2013

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    Language:English   Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution)  

  • 講義室での受講生の振る舞い観測と理解度推定の研究

    椋木雅之,美濃導彦

    人工知能学会全国大会(第26回), 1F2-OS-11-7, pp.1-4   2012.6

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 写真撮影情報と観光スポットの相関分析

    笠原 秀一, 森 幹彦, 椋木 雅之, 美濃 導彦

    観光情報学会総会   2012.5

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 京都大学における Sakai 実装の現状と課題

    梶田将司,元木環,椋木 雅之,平岡斉士

    情処研報 CLE   2012.5

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

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Presentations 【 display / non-display

  • 運動過程をフィードバックする筋力トレーニング支援システム

    田邉 英介,椋木 雅之,高塚 佳代子

    2021年度電気・情報関係学会九州支部連合大会  2021.9 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  • Proposal of Jawi CAPTCHA Using Digraphia Feature of the Malay Language International conference

    Hisaaki Yamaba, Ahmad Saiful Aqmal Bin Ahmad Sohaimi, Shotaro Usuzaki, Kentaro Aburada, Masayuki Mukunoki, Mirang Park, Naonobu Okazaki

    IWSEC2021  2021.9.9 

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    Event date: 2021.9

    Language:English   Presentation type:Oral presentation (general)  

  • 眼位検査法 Cover-Test の自動化に関する研究

    高津茉弥, 池田拓矢, 内田憲之, 高塚佳代子, 椋木雅之, 岡崎直宣

    2021年度電気・情報関係学会九州支部連合大会  2021.9 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  • 一般物体認識によるARを用いた牛に対する情報の重畳表示

    兒玉 光平,椋木雅之,高塚 佳代子,関口 敏

    火の国情報シンポジウム2021  (オンライン)  情報処理学会

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    Event date: 2021.3.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

  • 画像列からの3次元形状復元へのM推定導入による外れ値耐性の評価

    森 慎太郎,椋木雅之

    火の国情報シンポジウム2021  (オンライン)  情報処理学会

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    Event date: 2021.3.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

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Grant-in-Aid for Scientific Research 【 display / non-display

  • 講義中の受講者の振る舞いと理解度の関係解析

    2013.04 - 2016.03

    科学研究費補助金  基盤研究(C)

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    Authorship:Principal investigator 

    本研究では,講義中の受講者の振る舞いから,その受講者が講義内容をどの程度理解できているかを推定することを目指す.そのために,「ビデオカメラ等で観測した受講者の振る舞いを計算機により自動的に分類する技術」「受講者に対して講義中に実施する講義の理解度アンケートや講義内容に関する小テストの結果から,受講者の理解度を客観的に推定する技術」「求めた客観的理解度を Ground Truth とみなして,分類した受講者の振る舞いとの関連を求めることで,受講者の振る舞いから客観的理解度を推定する技術」の3つの技術を開発する.