• Title, Summary, Keyword: texture analysis

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The Classification Accuracy Improvement of Satellite Imagery Using Wavelet Based Texture Fusion Image (웨이브릿 기반 텍스처 융합 영상을 이용한 위성영상 자료의 분류 정확도 향상 연구)

  • Hwang, Hwa-Jeong;Lee, Ki-Won;Kwon, Byung-Doo;Yoo, Hee-Young
    • Korean Journal of Remote Sensing
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    • v.23 no.2
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    • pp.103-111
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    • 2007
  • The spectral information based image analysis, visual interpretation and automatic classification have been widely carried out so far for remote sensing data processing. Yet recently, many researchers have tried to extract the spatial information which cannot be expressed directly in the image itself. Using the texture and wavelet scheme, we made a wavelet-based texture fusion image which includes the advantages of each scheme. Moreover, using these schemes, we carried out image classification for the urban spatial analysis and the geological structure analysis around the caldera area. These two case studies showed that image classification accuracy of texture image and wavelet-based texture fusion image is better than that of using only raw image. In case of the urban area using high resolution image, as both texture and wavelet based texture fusion image are added to the original image, the classification accuracy is the highest. Because detailed spatial information is applied to the urban area where detail pixel variation is very significant. In case of the geological structure analysis using middle and low resolution image, the images added by only texture image showed the highest classification accuracy. It is interpreted to be necessary to simplify the information such as elevation variation, thermal distribution, on the occasion of analyzing the relatively larger geological structure like a caldera. Therefore, in the image analysis using spatial information, each spatial information analysis method should be carefully selected by considering the characteristics of the satellite images and the purpose of study.

Texture synthesis for model-based coding

  • Sohn, Young-Wook;Kim, In-Kwon;Park, Rae-Hong
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • pp.23-28
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    • 1996
  • Model-based coding is one of several approaches to very low bit rate image coding and it can be used in many applications such as image creation and virtual reality. However, its analysis and synthesis processes remain difficult, especially in the sense that the resulting synthesized image reveals some degradation in detailed facial components such as furrows around eyes and mouth. To solve the problem, a large number of methods have been proposed and the texture update method is one of them. In this paper, we investigate texture synthesis for model-based coding. In the update process of the proposed texture synthesis algorithm, texture information is stored in a memory and the decoder reuses it. With this method, the transmission bit rate for texture data can be reduced compared with the conventional method updating texture periodically.

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Texture profile analysis of acorn flour gel-Comparison of 3$\times$3 latin square with 3sup 3 factorial experiment - (도토리묵의 Texture 특성 -라틴방격법과 요인배치법의 비교-)

  • 김영아
    • Journal of the Korean Home Economics Association
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    • v.23 no.3
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    • pp.49-53
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    • 1985
  • The typical texture profile analysis of acorn flour gel was investigated with Instron univ. testing machine by two experimental designs, 3$\times$3 latin square and $3^{3}$factorial experiment. As the result, it was revealed that Latin square is a useful method to reduce the number of experiments, in the case of a negligible interaction.

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Analysis of Texture Features and Classifications for the Accurate Diagnosis of Prostate Cancer (전립선암의 정확한 진단을 위한 질감 특성 분석 및 등급 분류)

  • Kim, Cho-Hee;So, Jae-Hong;Park, Hyeon-Gyun;Madusanka, Nuwan;Deekshitha, Prakash;Bhattacharjee, Subrata;Choi, Heung-Kook
    • Journal of Korea Multimedia Society
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    • v.22 no.8
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    • pp.832-843
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    • 2019
  • Prostate cancer is a high-risk with a high incidence and is a disease that occurs only in men. Accurate diagnosis of cancer is necessary as the incidence of cancer patients is increasing. Prostate cancer is also a disease that is difficult to predict progress, so it is necessary to predict in advance through prognosis. Therefore, in this paper, grade classification is attempted based on texture feature extraction. There are two main methods of classification: Uses One-way Analysis of Variance (ANOVA) to determine whether texture features are significant values, compares them with all texture features and then uses only one classification i.e. Benign versus. The second method consisted of more detailed classifications without using ANOVA for better analysis between different grades. Results of both these methods are compared and analyzed through the machine learning models such as Support Vector Machine and K-Nearest Neighbor. The accuracy of Benign versus Grade 4&5 using the second method with the best results was 90.0 percentage.

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

  • Choo, Hyon-Gon;Kim, Whoi-Yul
    • The KIPS Transactions:PartB
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    • v.11B no.4
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    • pp.421-428
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    • 2004
  • There are three texture descriptors in MPEG-7 : Homogeneous Texture, Edge Histogram and Texture Browsing. In this paper, a comparative analysis is presented on the capability of MPEG-7 texture descriptors for iris recognition as part of an MPEG-7 application using descriptors. Through the experiments of comparing the clustering efficiency and error distribution of the descriptors using 560 iris images, their discriminating capabilities for different iris groups are analyzed. The results show that Homogenous Texture descriptor is the best discriminator among three descriptors to recognize the iris pattern. However, compared with the conventional iris recognition methods, it needs more efforts to enhance the results.

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

  • 김정수;강길진
    • The Korean Journal of Food And Nutrition
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    • v.11 no.5
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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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Development of Cube Texture in a Silver-Nickel Bi-layer Sheet

  • Lee, Hee-Gyoun;Jung, Yang-Hong;Hong, Gye-Won
    • Progress in Superconductivity
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    • v.1 no.1
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    • pp.47-50
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    • 1999
  • An Ag/Ni bi-layer sheet was fabricated by the combination of powder metallurgy, diffusion bonding, cold rolling and texture annealing processes. After heat treating the cold rolled thin Ag/Ni bi-layer sheet at $900^{\circ}C$ for 4h, the excellent cube texture was developed on nickel surface. Qualitative chemical analysis using EPMA showed that inter diffusions of Ni and Ag in Ag/Ni bi-layer composite were negligible. It showed that Ag can be used as a chemical barrier for Ni and vice versa.

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

  • Kang C. K.;Park S. H.;Huh M. Y.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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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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Finite Element Analysis for Steady State Forming Process of Polycrystalline Metal Including Texture Development (집합조직의 발전을 반영하는 다결정재의 정상상태성형공정해석)

  • 김응주;이용신
    • Transactions of Materials Processing
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    • v.5 no.4
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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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A study of texture through the depth of superconductor core (BSCCO 선재에서 초전도심의 깊이에 따른 집합조직 연구)

  • 지봉기;임준형;이동욱;장석헌;주진호;나완수
    • Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference
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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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