• 제목/요약/키워드: texture analysis

검색결과 1,803건 처리시간 0.034초

다시마를 첨가한 빵의 저장중 품질 특성 (Effect of Laminaria Addition on the Shelf-life and Texture of Bread)

  • 김정수;강길진
    • 한국식품영양학회지
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    • 제11권5호
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    • pp.556-560
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    • 1998
  • Effects of laminaria powder(0.1%, 0.5% and 1.0%) on self-life and texture of bread were investigated. Added laminaris inhibited the growth of bacteria and the decrease the moisture content and pH value, and the more laminaria was add, the higher degree of inhibition of those was observed. Results of texture analysis showed that there was no significant differ each treatment and control(no added laminaria powder).

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페라이트계 스테인리스강의 열간 압연 시 불균일 집합조직에 미치는 윤활 효과 (Effect of lubrication on the evolution of inhomogeneous textures in ferritic stainless steel sheets during hot rolling)

  • 강춘구;박수호;허무영
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 2005년도 추계학술대회 논문집
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    • pp.453-455
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    • 2005
  • Ferritic STS 439 Steel sheet were deformed by hot rolling with and without lubricant. The effect of friction between roll and specimen on inhomogeneous texture was studied by means of EBSD, XRD texture analysis. The textures were compared with those of obtained by Taylor FEM simulation. High friction between roll and sheet gave rise to the formation of the inhomogeneous shear texture through thickness.

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집합조직의 발전을 반영하는 다결정재의 정상상태성형공정해석 (Finite Element Analysis for Steady State Forming Process of Polycrystalline Metal Including Texture Development)

  • 김응주;이용신
    • 소성∙가공
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    • 제5권4호
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    • pp.297-304
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    • 1996
  • A process model is formulated considering the effect of crystallographic texture developed in forming process. The deformation induced plastic anisotropy can be predicted by capturing the evolution of texture during large deformation in the polycrystalline aggregate. The anisotropic stiffness matrix for the aggregate is derived and implemented in Eulerian finite element code using a Consistent Penalty method. As an application the evolution of texture in rolling drawing and extrusion processes are simulated. The numerical results show good agreements with report-ed experimental textures.

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MPEG-7 텍스쳐 서술자의 홍채 인식에 대한 성능 비교 (Comparisons of MPEG-7 Texture Descriptors for Iris recognition)

  • 추현곤;김회율
    • 정보처리학회논문지B
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    • 제11B권4호
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    • pp.421-428
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    • 2004
  • MPEG극 텍스쳐 서술자에는 균등 질감(Homogeneous Texture), 경계 히스토그램(Edge Histogram), 텍스쳐 브라우징(Texture Browsing) 서술자가 있다. 본 논문에서는 이들 텍스쳐 서술자를 이용하여 홍채 인식에 대한 성능을 비교 분석한다. 전처리 과정을 통해 추출된 560장의 흥채 영상을 이용하여, 세 서술자에 대한 각 계수에 대한 군집화 효율성 비교와 에러 분포 비교를 통해 서로 다른 홍채 그룹에 대한 변별 능력을 비교한다. 실험 결과를 통해 세 서술자 중 균등 질감 서술자가 홍채 패턴을 인식하는 데 있어서 가장 효율적인 서술자로 나타났다. 그러나, 실험결과는 기존의 홍채 인식 방법에 비해, MPEG-7 텍스쳐 서술자를 이용한 홍채 인식에 인식 성능 향상을 위한 노력이 필요함을 알 수 있다.

고해상도 텍스처 맵 생성을 위한 딥러닝 기반 초해상도 기법들의 비교 분석 연구 (Comparative analysis of the deep-learning-based super-resolution methods for generating high-resolution texture maps)

  • 김혜주;나재호
    • 한국컴퓨터그래픽스학회논문지
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    • 제29권5호
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    • pp.31-40
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    • 2023
  • 디스플레이의 해상도의 증가에 따라 고해상도 텍스처 맵을 내장한 앱들도 함께 증가하는 추세에 있다. 최근 딥러닝 기반 이미지 초해상도 기법들의 발전은 이러한 고해상도 텍스처 생성 작업을 자동화할 수 있는 가능성을 만들고 있다. 하지만 이러한 적용 사례에 대해 심층적으로 분석한 연구는 아직 부족한 상태이다. 그래서 본 논문에서는 최신 초해상도 기법들 중 BSRGAN, Real-ESRGAN, SwinIR(classical 및 real-world image SR)을 택하여 텍스처 맵의 업스케일링(upscaling)에 적용한 후 그 결과를 정량적, 정성적으로 비교, 분석하였다. 실험 결과 업스케일링 후 나타나는 다양한 아티팩트(artifact)들을 발견할 수 있었으며, 이를 통해 기존 초해상도 기법들을 텍스처 맵 업스케일링에 곧바로 적용하기에는 일부 미흡한 부분이 존재한다는 점을 확인하였다.

BSCCO 선재에서 초전도심의 깊이에 따른 집합조직 연구 (A study of texture through the depth of superconductor core)

  • 지봉기;임준형;이동욱;장석헌;주진호;나완수
    • 한국초전도저온공학회:학술대회논문집
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    • 한국초전도저온공학회 2001년도 학술대회 논문집
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    • pp.6-8
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    • 2001
  • We evaluated the degree of texture through depth of the superconductor core of Bi-Sr-Ca-Cu-O(BSCCO) superconductor tape. The degree of texture was characterized by pole figure analysis, indicating that the degree of texture varied significantly with depth of the superconductor core. It was observed that the degree of texture was higher near the interface than inside the superconducting core. Based on the result of degree of texture, the region near the interface is thought to carry significant current compared to that inside the core.

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Texture Development in Liquid-Phase-Sintered β -SiC by Seeding with β -SiC Whiskers

  • Kim, Won-Joong;Roh, Myong-Hoon
    • 한국세라믹학회지
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    • 제43권3호
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    • pp.152-155
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    • 2006
  • Silicon carbide ceramics seeded with 10-30 wt% SiC whiskers are fabricated by hot pressing and annealing. A quantitative texture analysis including calculation of the Orientation Distribution Function (ODF) is used for obtaining the degrees of preferred orientation of the fabricated samples. The microstructure and crystallographic texture are discussed with respect to the effect of ${\beta}-SiC$ whisker seeds on the resulting fracture toughness values. The SEM microstructures and the texture data reveal a correlation between texture and fracture toughness anisotropy.

냉간가공과 열처리한 Ni 테이프에서의 집합조직 발달 (Texture development in cold-roiled and heat-treated Ni tapes)

  • 이동욱;지봉기;임준형;주진호;정충환;박순동;전병혁;홍계원;김찬중
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2002년도 하계학술대회 논문집
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    • pp.535-538
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    • 2002
  • Cube-textured Ni substrates for YBCO coated conductors were fabricated by cold-rolling and annealing of Ni powder compacts. To establish the optimum sintering temperature, tensile test was performed for the Ni rod sintered at various temperatures. The Ni rods prepared at above 100$0^{\circ}C$ showed good mechanical properties due to the complete densification of the Ni rods. The Ni rods were rolled to final thickness of 100 ${\mu}{\textrm}{m}$ and then annealed at 100$0^{\circ}C$ for various annealing time for texture development. The texture analysis made by 2 $\theta$ scan and pole-figure showed that the cube texture was developed in a short time of a few munitues. The FWHM of in-plane and out of plane texture of the prepared Ni tapes was 8-10$^{\circ}$. The AEM surface roughness of the Ni tapes was as smooth as 3 nm.

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Evolution of Cube Texture in the Nickel-Silver-Stainless steel Multi-layer Sheet

  • Lee, Hee-Gyoun;Jung, Yang-Hong;Hong, Gye-Won
    • Progress in Superconductivity
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    • 제1권1호
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    • pp.51-55
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    • 1999
  • A Ni/Ag/Stainless steel 310S(SS310S) multi-layer sheet has been fabricated by a combination of vacuum brazing, cold rolling and texture annealing processes. After heat-treating the thin Ni/Ag/SS310S multi-layer sheet at $900^{\circ}C$ for 2h, development of (100)<001>cube texture on Ni surface was revealed by (111) pole figure. Quantitative chemical analysis was made by EPMA for the cross-section of the Ni/Ag/SS310S multi-layer sheet. EPMA results showed that Ag diffusion into the Ni layer, which may suppress the cube texture development, was negligible. A small amount of Cr atoms were detected in the Ni layer. It showed that Ag can be used as a chemical barrier of alloying element atoms in Ni layer for the Ni/Ag/SS310S multi-layer sheet and a strong cube texture was developed for the Ni layer in the Ni/Ag/SS310S multi-layer sheet.

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Texture Based Automated Segmentation of Skin Lesions using Echo State Neural Networks

  • Khan, Z. Faizal;Ganapathi, Nalinipriya
    • Journal of Electrical Engineering and Technology
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    • 제12권1호
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    • pp.436-442
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    • 2017
  • A novel method of Skin lesion segmentation based on the combination of Texture and Neural Network is proposed in this paper. This paper combines the textures of different pixels in the skin images in order to increase the performance of lesion segmentation. For segmenting skin lesions, a two-step process is done. First, automatic border detection is performed to separate the lesion from the background skin. This begins by identifying the features that represent the lesion border clearly by the process of Texture analysis. In the second step, the obtained features are given as input towards the Recurrent Echo state neural networks in order to obtain the segmented skin lesion region. The proposed algorithm is trained and tested for 862 skin lesion images in order to evaluate the accuracy of segmentation. Overall accuracy of the proposed method is compared with existing algorithms. An average accuracy of 98.8% for segmenting skin lesion images has been obtained.