• Title/Summary/Keyword: Hamin Jeong

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A study in pigment analysis and original mounting of the decorative painting at court (궁중 장식화의 채색 분석과 장황 고찰)

  • Ahn, Ji Yoon;Kim, Soo Yeon;Cheon, Ju Hyun
    • Journal of Conservation Science
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    • v.30 no.1
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    • pp.39-53
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    • 2014
  • The decorative painting at court was practical and functional role by decorated the inside and outside of palace. Especially, the type of the Painting of sun, moon and five peaks and Heavenly peach were the one of representative decorative paintings, produced for authority of king and longevity wish. However, there are not clarify verification of production period and installation place in the Painting of sun, moon and five peaks and Heavenly peach, that made before $19^{th}$ century, in present. Therefore, this study has a meaning on find production period, installation place and techniques of paint through conservation scientific research of the Painting of sun, moon and five peaks and Heavenly peach that introduced the first time in National Museum of Korea. Double side paintings in two-panel folding screen style and tortoise shell shape of window is the first time research in the decorative painting at court. This study also explain that they were installed in Hamin Jeong from ChanggyeongGungyeonggeon Dogam Uigwe(1834) through research of the original measurement, contrast of palace in present and Uigwe record. It will be contributed to a study of the Painting of sun, moon and five peaks and Heavenly peach in the early $19^{th}$ century.

Design and Implementation of Hierarchical Image Classification System for Efficient Image Classification of Objects (효율적인 사물 이미지 분류를 위한 계층적 이미지 분류 체계의 설계 및 구현)

  • You, Taewoo;Kim, Yunuk;Jeong, Hamin;Yoo, Hyunsoo;Ahn, Yonghak
    • Convergence Security Journal
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    • v.18 no.3
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    • pp.53-59
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    • 2018
  • In this paper, we propose a hierarchical image classification scheme for efficient object image classification. In the non-hierarchical image classification, which classifies the existing whole images at one time, it showed that objects with relatively similar shapes are not recognized efficiently. Therefore, in this paper, we introduce the image classification method in the hierarchical structure which attempts to classify object images hierarchically. Also, we introduce to the efficient class structure and algorithms considering the scalability that can occur when a deep learning image classification is applied to an actual system. Such a scheme makes it possible to classify images with a higher degree of confidence in object images having relatively similar shapes.

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Lost and Found Registration and Inquiry Management System for User-dependent Interface using Automatic Image Classification and Ranking System based on Deep Learning (딥 러닝 기반 이미지 자동 분류 및 랭킹 시스템을 이용한 사용자 편의 중심의 유실물 등록 및 조회 관리 시스템)

  • Jeong, Hamin;Yoo, Hyunsoo;You, Taewoo;Kim, Yunuk;Ahn, Yonghak
    • Convergence Security Journal
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    • v.18 no.4
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    • pp.19-25
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    • 2018
  • In this paper, we propose an user-centered integrated lost-goods management system through a ranking system based on weight and a hierarchical image classification system based on Deep Learning. The proposed system consists of a hierarchical image classification system that automatically classifies images through deep learning, and a ranking system modules that listing the registered lost property information on the system in order of weight for the convenience of the query process.In the process of registration, various information such as category classification, brand, and related tags are automatically recognized by only one photograph, thereby minimizing the hassle of users in the registration process. And through the ranking systems, it has increased the efficiency of searching for lost items by exposing users frequently visited lost items on top. As a result of the experiment, the proposed system allows users to use the system easily and conveniently.

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Optical Properties and Phenol Destruction Performance of Pd-inserted TiO2 Photocatalysts (Pd이 삽입된 TiO2 광촉매의 광학 특성 및 페놀 분해 성능 평가)

  • Do, Jeong Yeon;Kim, Teho;Sim, Hwanseok;Jeong, Hamin;Choi, Jae Hoon;Kang, Misook
    • Applied Chemistry for Engineering
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    • v.28 no.5
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    • pp.547-553
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    • 2017
  • This study focused on the difference of photocatalytic performance by the incorporation of Pd into the $TiO_2$ framework and suggested five different catalysts composed of $TiO_2$ and x mol% $Pd-TiO_2$ (x = 0.25, 0.5, 0.75, and 1.0). A typical sol-gel method was used to synthesize catalysts, and the phenol photodegradation performance of each catalysts was evaluated. The physicochemical and optical properties of catalysts were confirmed by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy/energy dispersive spectrometer (SEM/EDS), ultraviolet/visible spectroscopy (UV/Vis), photoluminescence spectroscopy (PL), and photocurrent measurements. With the addition of Pd ions, the band gap of catalysts was shortened and the charge separation between photogenerated electrons and holes easily also occurred. As a result, the phenol photo-destruction performance over 0.75 mol% $Pd-TiO_2$ catalyst was 3 times higher than that of pure $TiO_2$. This is believed to be due to Pd ions acted as an electron capturing function during photocatalysis.