• Title/Summary/Keyword: Structural texture

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Amorphous Cr-Ti Texture-inducing Layer Underlying (002) Textured bcc-Cr alloy Seed Layer for FePt-C Based Heat-assisted Magnetic Recording Media

  • Jeon, Seong-Jae;Hinata, Shintaro;Saito, Shin
    • Journal of Magnetics
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    • v.21 no.1
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    • pp.35-39
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    • 2016
  • $Cr_{100-x}Ti_x$ amorphous texture-inducing layers (TIL) were investigated to realize highly (002) oriented $L1_0$ FePt-C granular films through hetero-epitaxial growth on the (002) textured bcc-$Cr_{80}Mn_{20}$ seed layer (bcc-SL). As-deposited TILs showed the amorphous phase in Ti content of $30{\leq}x(at%){\leq}75$. Particularly, films with $40{\leq}x{\leq}60$ kept the amorphous phase against the heat treatment over $600^{\circ}C$. It was found that preference of the crystallographic texture for bcc-SLs is directly affected by the structural phase of TILs. (002) crystallographic texture was realized in bcc-SLs deposited on the amorphous TILs ($40{\leq}x{\leq}70$), whereas (110) texture was formed in bcc-SLs overlying on crystalline TILs (x < 30 and x > 70). Correlation between the angular distribution of (002) crystal orientation of bcc-SL evaluated by full width at half maximum of (002) diffraction (FWHM) and a grain diameter of bcc-SL indicated that while the development of the lateral growth for bcc-SL grain reduces FWHM, crystallization of amorphous TILs hinders FWHM. $L1_0$ FePt-C granular films were fabricated under the substrate heating process over $600^{\circ}C$ with having different FWHM of bcc-SL. Hysteresis loops showed that squareness ($M_r/M_s$) of the films increased from 0.87 to 0.95 when FWHM of bcc-SL decreased from $13.7^{\circ}$ to $3.8^{\circ}$. It is suggested that the reduction of (002) FWHM affects to the overlying MgO film as well as FePt-C granular film by means of the hetero-epitaxial growth.

Differential Morphological, Structural and Biological Characteristics of Cysts in Heterodera Species in Korea

  • Han, Ga Ram;Kang, Heonil;Choi, In Soo;Kim, Donggeun;Yun, Hye Young;Kim, Young Ho
    • The Plant Pathology Journal
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    • v.36 no.6
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    • pp.628-636
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    • 2020
  • Morphological (cyst shape, color, and sizes [length (L), maximum width (W), volume and "a" (L/W)]), structural (vulvar cone slope angle [VCSA], surface wrinkle [VCSW], cyst wall thickness, composition, and texture) and biological characteristics (fecundity, hatching, and emergence [number of second-stage juveniles (J2) from a cyst]) in preceding Heterodera glycines (Hg), currently-recorded H. sojae (Hs) and H. trifolii (Ht) were examined by microscopy. Cysts were lemon-shaped, indicating the genus is Heterodera except for Hs that formed frequently globular cysts with significantly flatter VCSA (102.2°) with smooth VCSW than Hg (50.6°) and Ht (82.0°), but not genus Globodera because of the presence of vulvar cone in Hs. Ht was significantly larger in all morphological characteristics than Hg and Hs, suggesting Ht may be diagnosed differentially by cyst sizes and also host plant preferences. Hs showed smaller "a" value with more globular shape and stronger structures with more thickened and strengthened collagen-like texture of cyst wall than Hg and Ht. This suggests Hs may be diagnosed differently by structural characteristics from the others, especially Hg with similar cyst sizes. There were no significant differences in emergence (inoculum potential) among cyst nematodes due to the offset of fecundity and hatching rate; however, the inoculum potential of Hs may be not so persistent as Hg and Ht in fields because of its lower fecundity and higher hatching rate (causing rapid inoculum loss) than the others. These characteristics of cysts provide information useful for simple and differential diagnoses and reliable management of cyst nematodes.

An Improved Texture Feature Extraction Method for Recognizing Emphysema in CT Images

  • Peng, Shao-Hu;Nam, Hyun-Do
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.11
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    • pp.30-41
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    • 2010
  • In this study we propose a new texture feature extraction method based on an estimation of the brightness and structural uniformity of CT images representing the important characteristics for emphysema recognition. The Center-Symmetric Local Binary Pattern (CS-LBP) is first used to combine gray level in order to describe the brightness uniformity characteristics of the CT image. Then the gradient orientation difference is proposed to generate another CS-LBP code combining with gray level to represent the structural uniformity characteristics of the CT image. The usage of the gray level, CS-LBP and gradient orientation differences enables the proposed method to extract rich and distinctive information from the CT images in multiple directions. Experimental results showed that the performance of the proposed method is more stable with respect to sensitivity and specificity when compared with the SGLDM, GLRLM and GLDM. The proposed method outperformed these three conventional methods (SGLDM, GLRLM, and GLDM) 7.85[%], 22.87[%], and 16.67[%] respectively, according to the diagnosis of average accuracy, demonstrated by the Receiver Operating Characteristic (ROC) curves.

Segmentation and Contents Classification of Document Images Using Local Entropy and Texture-based PCA Algorithm (지역적 엔트로피와 텍스처의 주성분 분석을 이용한 문서영상의 분할 및 구성요소 분류)

  • Kim, Bo-Ram;Oh, Jun-Taek;Kim, Wook-Hyun
    • The KIPS Transactions:PartB
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    • v.16B no.5
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    • pp.377-384
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    • 2009
  • A new algorithm in order to classify various contents in the image documents, such as text, figure, graph, table, etc. is proposed in this paper by classifying contents using texture-based PCA, and by segmenting document images using local entropy-based histogram. Local entropy and histogram made the binarization of image document not only robust to various transformation and noise, but also easy and less time-consuming. And texture-based PCA algorithm for each segmented region was taken notice of each content in the image documents having different texture information. Through this, it was not necessary to establish any pre-defined structural information, and advantages were found from the fact of fast and efficient classification. The result demonstrated that the proposed method had shown better performances of segmentation and classification for various images, and is also found superior to previous methods by its efficiency.

Document Image Segmentation and Classification using Texture Features and Structural Information (텍스쳐 특징과 구조적인 정보를 이용한 문서 영상의 분할 및 분류)

  • Park, Kun-Hye;Kim, Bo-Ram;Kim, Wook-Hyun
    • Journal of the Institute of Convergence Signal Processing
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    • v.11 no.3
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    • pp.215-220
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    • 2010
  • In this paper, we propose a new texture-based page segmentation and classification method in which table region, background region, image region and text region in a given document image are automatically identified. The proposed method for document images consists of two stages, document segmentation and contents classification. In the first stage, we segment the document image, and then, we classify contents of document in the second stage. The proposed classification method is based on a texture analysis. Each contents in the document are considered as regions with different textures. Thus the problem of classification contents of document can be posed as a texture segmentation and analysis problem. Two-dimensional Gabor filters are used to extract texture features for each of these regions. Our method does not assume any a priori knowledge about content or language of the document. As we can see experiment results, our method gives good performance in document segmentation and contents classification. The proposed system is expected to apply such as multimedia data searching, real-time image processing.

Texture-Spatial Separation based Feature Distillation Network for Single Image Super Resolution (단일 영상 초해상도를 위한 질감-공간 분리 기반의 특징 분류 네트워크)

  • Hyun Ho Han
    • Journal of Digital Policy
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    • v.2 no.3
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    • pp.1-7
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    • 2023
  • In this paper, I proposes a method for performing single image super resolution by separating texture-spatial domains and then classifying features based on detailed information. In CNN (Convolutional Neural Network) based super resolution, the complex procedures and generation of redundant feature information in feature estimation process for enhancing details can lead to quality degradation in super resolution. The proposed method reduced procedural complexity and minimizes generation of redundant feature information by splitting input image into two channels: texture and spatial. In texture channel, a feature refinement process with step-wise skip connections is applied for detail restoration, while in spatial channel, a method is introduced to preserve the structural features of the image. Experimental results using proposed method demonstrate improved performance in terms of PSNR and SSIM evaluations compared to existing super resolution methods, confirmed the enhancement in quality.

Study on Improvement of Cooking Rice Method for Acceleration of Consumption of the Rice (쌀소비 촉진을 위한 쌀밥 조리 개선 연구 (I) - 취반시 조리수에 산, 지방, Cellulose 첨가에 따른 texture 변화)

  • 김경자;양화영;오미향;구정선
    • Korean journal of food and cookery science
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    • v.9 no.1
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    • pp.25-29
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    • 1993
  • This study was attempted to enhance taste and quality value of cooked rice by adding fat, vinegar, cellulose in cooking water. Cooked rice with five different levels of material in cooking water (100% water A: 10% vinegar B: 10% fat C: 10% fat and 10% vinegar D: 10% fat, 10% vinegar and 10% celloulose) was tested for rheology, fine structural changes, sensory evaluation, in vitro digestion. 1) Cooked rice by adding 10% fat rate was higher than A, B, D, E samples for softness, Jelly and increased in vitro digestion. 2) sensory evaluation conducted by tweenty university students a panelists showed that B, D sample were low value in flavour, texture and taste, but higher than A sample for softness, Jelly and in Vitro digestion. 3) E sample (l0% fat, 10%s vinegar, 10% cellulose) was more significant for taste, texture, and digestion than A sample. From these results, it was concluded that rice cooked with 10% of fat in cooking water was quite acceptable, in terms of practical food value consisting of palatability rheology and digestibility.

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Textures and Sensible Images on Structural Properties of Washable Wool and Normal Wool Knit Fabrics (Part I) -Focus on the Relationship of Subjective Evaluation, Mechanical Properties and Objective Hand Measurements and Preferences- (워셔블 울과 노멀 울편성물의 구성특성에 따른 질감 및 감성이미지 (제1보) -구성특성에 따른 주관적 평가, 역학적 특성과 객관적 태의 관계를 중심으로-)

  • Kim, Hyun-Ah;Ryu, Hyo-Seon
    • Journal of the Korean Society of Clothing and Textiles
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    • v.35 no.11
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    • pp.1362-1376
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    • 2011
  • This study examines the effect of the structural properties of F/W wool knit fabrics for woman's knitwear on the perceptions of textures and sensible images of consumers and present basic data for textile designing by analyzing the relationship among the structural properties, mechanical properties, objective hand measurements and preferences. A total of 12 kinds of knit fabrics were prepared and investigated in terms of the differences in the subjective, mechanical properties and objective hand measurements according to the structural properties of knit fabrics. The data were analyzed by t-test. The subjective hand attributes of wool knits through factor analysis are categorized into 6 factors. In particular, the 'active/comfort' factor is a meaningful result that reflects the unique characteristics of knit fabrics compared to woven fabrics. Mechanical properties and objective hand measurements have a greater effect on textures than on sensible images; in addition, the structural properties, 'gauge' was the most important factor to influence the subjective evaluation.

A Study on the Crinkle Expressive Technique in Contemporary Fashion (현대패션에 표현된 크링클(Crinkle) 기법에 관한 연구)

  • 이희남
    • Journal of the Korean Society of Costume
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    • v.30
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    • pp.167-181
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    • 1996
  • Towards the second half of 20th century the fashion market has become increasely fragmented reflecting the pluality of cultures. As a result style no longer had time to accrue individuality and so people lost interest. In the aftermath of this fashion has turned its atten-tion to its materials for inspiration and inno-vation. Taking their inspiration for new working designers have began to explore diverse materials and expressive techniques of tex-ture. Textural expression can change the im-age of a garment even on with the same structural design. This study is to present the crinkle express-ive technique of texture through the applied examples in contemporary fashion and related backgrounds. The result of this study testified the import-ance of texture as plastic element through various techniques of crinkle; 1) creasing technique is reminiscent of the delphos of Fortuny by modern materials 2) twisting tech-nique is that finished garment is twisted and crumpled by hand 3) shirnking technique is recreated method that is crushed and tied for granting the human touch to the material.

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A Study on the Fabrication and Structural Evaluation of AlN Thin Films

  • Han, Seung-Oh;Han, Chang-Suk
    • Journal of the Korean Society for Heat Treatment
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    • v.23 no.2
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    • pp.69-74
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    • 2010
  • AlN thin films were deposited by using a two-facing-targets type sputtering system (TFTS), and their deposition characteristics, microstructure and texture were investigated. Total gas pressure was kept constant at 0.4 Pa and the partial pressures of nitrogen, $PN_2$ (($N_2$ pressure)/($Ar+N_2$ pressure)) varied from 0 to 0.4 Pa. The texture of the film cross-sections and surface morphology were observed by field emission scanning electron microscope (FE-SEM). The crystallographic orientation of the films were analyzed by X-ray diffraction (XRD). Deposition of AlN film depends on $N_2$ partial pressure. The best preferred oriented AlN thin films can be deposited at a nitrogen partial pressure of $PN_2$ = 0.52. As-deposited AlN films show preferred orientation and columnar structure, and the grAlN size of AlN films increases with increasing sputtering current.