• Title, Summary, Keyword: texture analysis

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Variations in the texture properties of cooked rice as a function of instrumental parameter conditions (기기적 측정조건을 달리하여 측정한 쌀밥의 조직감 특성 변화)

  • Choi, Won-Seok;Seo, Han-Seok
    • Korean Journal of Food Science and Technology
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    • v.48 no.5
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    • pp.521-524
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    • 2016
  • This study aimed to examine variations in the texture profile analysis (TPA) of cooked rice in relation to the instrumental parameter conditions. The TPA of four types of ready-to-eat, white rice products was conducted in two levels of compression ratio (30 and 70%) and cross-head speed (0.5 and 1.0 mm/s). The properties of the four rice products significantly or non-significantly differed, depending on the instrumental parameter condition. Agglomerative hierarchical clustering, based on the five TPA properties such as hardness, adhesiveness, cohesiveness, chewiness, and springiness, revealed that clustering of the four rice products varied with the instrumental parameter condition. Additionally, the ratio of adhesiveness to hardness, an index of rice texture quality, showed a variation depending on the two instrumental parameter conditions. In conclusion, our findings demonstrate that the texture profile, texture-based sample clustering, and the ratio of adhesiveness to hardness vary with the compression ratio and cross-head speed in the TPA.

Effects of Cooking End-point Temperature and Muscle Part on Sensory 'Hardness' and 'Chewiness' Assessed Using Scales Presented in ISO11036:1994

  • Sasaki, Keisuke;Motoyama, Michiyo;Narita, Takumi;Chikuni, Koichi
    • Asian-Australasian Journal of Animal Sciences
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    • v.26 no.10
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    • pp.1490-1495
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    • 2013
  • Texture and 'tenderness' in particular, is an important sensory characteristic for consumers' satisfaction of beef. Objective and detailed sensory measurements of beef texture have been needed for the evaluation and management of beef quality. This study aimed to apply the sensory scales defined in ISO11036:1994 to evaluate the texture of beef. Longissimus and Semitendinosus muscles of three Holstein steers cooked to end-point temperatures of $60^{\circ}C$ and $72^{\circ}C$ were subjected to sensory analyses by a sensory panel with expertise regarding the ISO11036 scales. For the sensory analysis, standard scales of 'chewiness' (9-points) and 'hardness' (7-points) were presented to the sensory panel with reference materials defined in ISO11036. As a result, both 'chewiness' and 'hardness' assessed according to the ISO11036 scales increased by increasing the cooking end-point temperature, and were different between Longissimus and Semitendinosus muscles. The sensory results were in good agreement with instrumental texture measurements. However, both texture ratings in this study were in a narrower range than the full ISO scales. For beef texture, ISO11036 scales for 'chewiness' and 'hardness' are useful for basic studies, but some alterations are needed for practical evaluation of muscle foods.

Optimal Gator-filter Design for Multiple Texture Image Segmentation (다중 텍스쳐 영상 분할을 위한 최적 가버필터의 설계)

  • Lee, U-Beom;Kim, Uk-Hyeon
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.39 no.3
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    • pp.11-22
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    • 2002
  • The design of optimal filter yielding optimal texture feature separation is a most effective technique in many torture analyzing areas, such as perception of surface, object, shape and depth. But, most optimal filter design approaches are restricted to the issue of computational complexity and supervised problems. In this paper, Our proposed method yields new insight into the design of optimal Gabor filters for segmenting multiple texture images. The optimal frequency of Gator filter is turned to the optimal frequency of the distinct texture in frequency domain. In order to show the performance of the designed filters, we have attempted to build a various texture images. Our experimental results show that the performance of the system is very successful.

A Study on the Measurement of Texture Depth of Pavement Using Portable Laser Profiler (Portable Laser Profiler를 이용한 도로 포장의 노면조직 깊이 측정 방법 연구)

  • Hong, Seong Jae;Hyun, Tak Jib;Kim, Hyung Bae;Kwon, Oh Sun;Lee, Seung Woo
    • International Journal of Highway Engineering
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    • v.14 no.6
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    • pp.45-55
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    • 2012
  • PURPOSES : Skid resistance and noise of roads highly depend on the characteristics of pavement texture. Therefore, estimation of texture characteristics may give useful information for the skid resistance and noise of road. Generally, Sand Patch Test is performed in order to estimate MTD(Mean Texture Depth). However, it is time-consuming and needs traffic control. This study aimed to investigate the effectiveness of measurement texture depth using the Portable Laser Profiler that give the MPD(Mean Profile Depth). METHODS : MTD and MPD were collected on the number of expressway sections including Central Inland Test Road sections in Korea. Statistical analysis are performed to establish the relationship between MTD data based on Sand Patch Test and MPD data obtained by the Portable Laser Profiler. RESULTS : Linear relationship MPD and MTD is observed for both of asphalt pavement and concrete pavement such as R-square of 0.51 to 0.58. CONCLUSIONS : Even though, the test method and definition of MPD and MTD are different. EMTD(Estimated Mean Texture Depth) can be obtained by using the correlationship between MPD with MTD.

Simulation of Texture Evolution and Anisotropy Behavior in Dual Phase Steels during Deep Drawing Process (DP강의 디프드로잉 시 집합조직 발달과 이방성 거동 시뮬레이션)

  • Song, Young-Sik;Kim, Dae-Wan;Yang, Hoe-Seok;Han, Sung-Ho;Chin, Kwang-Gun;Choi, Shi-Hoon
    • Korean Journal of Metals and Materials
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    • v.47 no.5
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    • pp.274-282
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    • 2009
  • To investigate the evolution of deformation texture in dual phase (DP) steels during deep-drawing deformation, deep-drawing experiments were performed. Microtexture measurements were conducted using electron backscattered diffraction (EBSD) to analyze texture evolution. A rate-sensitive polycrystal model was used to predict texture evolution during deep-drawing deformation. In order to evaluate the strain path during deep-drawing deformation, a steady state was assumed in the flange part of a deep-drawn cup. A ratesensitive polycrystal model successfully predicted the texture evolution in DP steels during deep-drawing deformation. The final stable orientations were found to be strongly dependent on the initial location in the blank. Texture analysis revealed that the deep drawability of DP steels decreases as the true strain in the radial direction of the deep-drawn cup increases during deep-drawing deformation.

Evaluation of Texture Image and Preference to Men's Suit Fabrics according to Mechanical Properties, Hand and Fabric Information of Wool Blended Fabrics (모 혼방직물의 역학적 특성과 태 및 소재 정보에 따른 남성 정장용 소재의 질감이미지와 선호도 평가)

  • Kim, Hee Sook;Na, Mi Hee
    • Korean Journal of Human Ecology
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    • v.23 no.2
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    • pp.317-328
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    • 2014
  • In this study, differences of texture image and preference for men's suit fabrics according to mechanical properties, hand and fabric information were investigated. 55 subjects evaluated texture image and preference of 12 kinds of wool blended fabrics. For statistical analysis, t-test and pearson correlation coefficients were used. The results were as follows: Most of mechanical properties effected on texture images, and bending property and shearing property were effected on tactile preference and purchasing preference. For hand, objective hand values showed correlations with subjective texture images and preferences, but THV had almost no correlations. In sensory images according to presence of fabric information, fabrics were evaluated thinner, lighter, more pliable and smooth by cognition of wool blending ratio. For sensibility images, fabrics were evaluated more refined, intellectual, dignified and less practicable after recognize of wool blending ratio. In preferences, tactile preference was increased and purchasing preference was decreased after recognize fabric information. Therefore, significant differences of texture image and preference were observed according to presence of fabric information.

Analysis of microstructure and texture evolution in AZ31Mg alloy fabricated by direct/indirect extrusion process (직/간접 압출공정에 의해 제조된 AZ31Mg 합금의 미세조직 및 집합조직 변화 분석)

  • Kim, D.H.;You, B.S.;Park, S.S.;Yoon, D.J.;Choi, S.H.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • pp.38-41
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    • 2008
  • To investigate the evolution of microstructure and texture in AZ31 Mg alloy, direct/indirect extrusion process was carried out at $300^{\circ}C$ with various extrusion speeds. The distribution of grain size depends on extrusion method and extrusion speed. More homogeneous grain site can be obtained at higher extrusion speed of indirect extrusion process. Extrusion speed does not affect significantly texture evolution during extrusion process regardless of extrusion method. ODF section is more useful to understand texture evolution during extrusion process compared with pole figure.

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Study on Performance Analysis of Video Retrieval Using Temporal Texture (Temporal texture를 이용한 비디오 검색의 성능분석)

  • 홍지수;김영복;김도년;조동섭
    • Proceedings of the Korean Information Science Society Conference
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    • pp.443-445
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    • 2000
  • 모든 물체의 표면은 독특한 성질을 보유하고 있으므로, 비디오 검색에 있어 텍스처는 형상이나 색과 더불어 중요한 변수로 사용될 수 있다. 비디오 검색에 있어서 중요한 것은 어떤 영상의 특징을 올바르게 추출하고 잘 분류하여 표현하는 것이다. Temporal texture는 무한한 시공간적 범위의 복잡하고, 추상적인 움직임 패턴도 특징화시킬 수 있으므로, temporal texture 패턴을 얼마나 잘 이용할 수 있느냐는 비디오 검색의 성능에 많은 영향을 끼칠 수 있다. 본 논문은 temporal texture의 서로 다른 특징을 가진 세 가지의 모델을 선정하여 비교한다. 특히, 특징 추출의 분류가 정확하게 이루어지느냐에 초점을 맞추어서 분석하였다. 분류의 성능은 두 가지 변수 즉, 어떤 성질의 모델이며 비디오 데이터인가에 따라 달라지게 된다. 이들 모델링이 분류하기까지 걸리는 시간의 차이는 무시할 수 있을 정도의 시간차이므로 정확도를 위주로 성능을 분석했다.

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Recovering Surface Orientation from Texture Gradient by Monoculer View (단안시에 의한 무늬그래디언트로부터 연 방향 복구)

  • 정성칠;최연성;최종수
    • Proceedings of the Korean Institute of Communication Sciences Conference
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    • pp.22-26
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    • 1987
  • Texture provides an important acurce of information about the threedicensfornarry information of visible surface particulary for stationary conccular views. To recover three dicmensinoary information, the distorging effects of pro jection must be distinguished from properties of the texture on which the distrortion acts. In this paper, we show an approximated maximum likelihood estimation method by which we find surface oriemtation of the visible surface in gaussian sphere using local analysis of the texture, In addition assuming that an orthographic projection and a circle is an image formation system and a texel(texture element)respectively we derive the surface orientation from the distribution of variation by means of orthographic pro jemction of a tangent directon which exstis regulary in the are length of a circle we present the orientation parameters of textured surface with saint and tilt and also the surface normal of the resvlted surface orimentation as needle map. This algorithm was applied to geograghic contour and synthetic textures.

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Texture Analysis of Machined Surface Using Intensity Gradient (광 강도변화를 이용한 가공면의 텍스쳐 해석)

  • 사승윤
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • pp.316-322
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    • 1998
  • Super precision working technique and machine tool have been developing continually thanks to advanced electronic field. To obtain good result. it is necessary to investigate surface state in grinding with ${\mu}{\textrm}{m}$ level. There were so many researches to satisfy these demands using non-contact methods through the computer vision. In this study, the texture of working surface was analyzed. cooccurrence matrice was obtained from the surface roughness. Texture parameter was obtained by means of position operator compose of $\theta$. d according to variation of angle direction and distance. As a result, it was found that surface texture was more effected by direction ($\theta$) then distance(d).

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