• 제목/요약/키워드: Image pattern analysis

검색결과 769건 처리시간 0.025초

기하학과 비선형 공간 형태의 상관성에 관한 기초 연구 (A Study on the Interrelationship between Geometry and Nonlinear Figure of Space)

  • 이철재
    • 한국실내디자인학회논문집
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    • 제14권1호
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    • pp.160-167
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    • 2005
  • The paper raises a question in argument about the method of creating space depending on accidental creation by computer as the method of describing movement pattern, and emphasizes the role of the mathematics which may change the shape into the image or reflection, that is, data which human may understand and expect. If the mathematics could be the method of describing movement pattern, it may play a important role on the analysis of architectural space based on the idea of post-constructionism, which is likely to consider the modern architectural space recognized as the sequential frames containing movement, as the suspended state of the moving object. And then, this infinite series, 'the sum' of the suspended state, is not studied mathematically and scientifically, but is able to be shaped by reviewing the validity in mathematics about the nonlinear space. This is, therefore, the fundamental research in order to define the role of the mathematics in formation of space of contemporary architecture.

아다부스트 학습과 비정방형 Differential LBP를 이용한 얼굴영상 특징분석 (Face Image Analysis using Adaboost Learning and Non-Square Differential LBP)

  • 임길택;원철호
    • 한국멀티미디어학회논문지
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    • 제19권6호
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    • pp.1014-1023
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    • 2016
  • In this study, we presented a method for non-square Differential LBP operation that can well describe the micro pattern in the horizontal and vertical component. We proposed a way to represent a LBP operation with various direction components as well as the diagonal component. In order to verify the validity of the proposed operation, Differential LBP was investigated with respect to accuracy, sensitivity, and specificity for the classification of facial expression. In accuracy comparison proposed LBP operation obtains better results than Square LBP and LBP-CS operations. Also, Proposed Differential LBP gets better results than previous two methods in the sensitivity and specificity indicators 'Neutral', 'Happiness', 'Surprise', and 'Anger' and excellence Differential LBP was confirmed.

A study on the measurement of plastic zone and crack growth length at the crack tip under cyclic loading using ESPI system

  • Kim, Kyung-Su;Kim, Ki-Sung;Shim, Chun-Sik
    • Structural Engineering and Mechanics
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    • 제15권3호
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    • pp.367-378
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    • 2003
  • The magnitude of the plastic zone around the crack tip of DENT (Double Edge Notched Tension) specimen and the crack growth length under cyclic loading were measured by ESPI (Electronic Speckle Pattern Interferometry) system. The measured magnitude of plastic zone was compared with the proposed by Irwin and calculated by a nonlinear static method of MSC/NASTRAN. The measured crack growth length by ESPI system was also compared with the obtained data by the image analysis system. From the study, it is confirmed that the plastic zone and crack growth length can be measured accurately with the high-tech equipment (ESPI System).

감지 패턴 인식에 의한 가스센서의 선택성 연구 (A Study on the Selectivity of Gas Sensors by Sensing Pattern Recognition)

  • 이성필
    • 센서학회지
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    • 제20권6호
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    • pp.428-433
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    • 2011
  • We report on the building of a micro sensor array based on typical semiconductor fabrication processes aimed at monitoring selectively a specific gas in ambient of other gases. Chemical sensors can be applied for an electronic nose and/or robots using this technique. Microsensor array was fabricated on the same chip using 0.6${\mu}m$ CMOS technology, and unique gas sensing patterns were obtained by principal component analysis from the array. $SnO_2$/Pt sensor for CO gas showed a high selectivity to buthane gas and humidity. $SnO_2$ sensor for hydrogen gas, however, showed a low selectivity to CO and buthane gas. We can obtain more distinguishable patterns that provide the small sensing deviation(the high seletivity) toward a given analyte in the response space than in the chemical space through the specific parameterization of raw data for chemical image formation.

목자판 표면 상태에 적응적인 영상 기반 수위 계측 기법 (Image-based Water Level Measurement Method Adapting to Ruler's Surface Condition)

  • 김재도;한영준;한헌수
    • 한국컴퓨터정보학회논문지
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    • 제15권9호
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    • pp.67-76
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    • 2010
  • 본 논문은 수위 측정 영역의 오염 상태에 적응적인 영상 기반 수위 계측 기법을 제안한다. 수위를 측정하기 위해 사용되는 목자판이 진흙, 부유물, 조명의 강한 반사에 의해 얼룩진 경우, 목자판 내부의 수평 성분 패턴이 유지되는 영역의 최종 위치와 목자판과 수면의 색상 차를 이용하여 얻어진 대략적인 수위 위치인 참조 수위와의 거리 차를 측정하여 목자판의 오염 여부를 판단하는 기법을 사용한다. 목자판이 오염되지 않은 경우에는 수평 성분이 유지되는 최종 위치의 근방 하단 영역에서 수평 성분의 분포를 분석하여 히스토그램이 가지는 최대값의 30%이상의 값을 가지는 위치를 수위로 검출하고, 목자판이 오염된 경우는 참조 수위 근방의 색상 변화의 국지적인 정점과 골을 검출한 후 그 변화가 가장 큰 위치를 수위로 검출한다. 검출된 영상 수위는 영상에 보이는 목자판의 눈금을 기준으로 생성한 맵핑 테이블을 이용하여 실제 수위로 변환된다. 제안한 방법의 적용 가능성과 일반성을 평가하기 위하여 실제 교량에 측정 시스템을 구축하고 같은 위치에 기존에 설치된 초음파 기반 측정 시스템과 그 측정치를 비교하였다.

Relationship assessment among land use and land cover and land surface temperature over downtown and suburban areas in Yangon City, Myanmar

  • Yee, Khin Mar;Ahn, Hoyong;Shin, Dongyoon;Choi, Chuluong
    • 대한원격탐사학회지
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    • 제32권4호
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    • pp.353-364
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    • 2016
  • Yangon city is experienced a rapid urban expansion over the last two decades due to accelerate with the socioeconomic development. This research work studied an investigation into the application of the integration of the Remote Sensing (RS) and Geographic Information System (GIS) for observing Land Use and Land Cover (LULC) patterns and evaluate its impact on Land Surface Temperature (LST) of the downtown, suburban 1 and suburban 2 of Yangon city. The main purpose of this paper was to examine and analyze the variation of the spatial distribution property of the LULC of urban spatial information related with the LST and Normalized Difference Vegetation Index (NDVI) using RS and GIS. This paper was observed on image processing of LULC classification, LST and NDVI were extracted from Landsat 8 Operational Land Imager (OLI) image data. Then, LULC pattern was linked with the variation of LST data of the Yangon area for the further connection of the correlation between surface temperature and urban structure. As a result, NDVI values were used to examine the relation between thermal behavior and condition of land cover categories. The spatial distribution of LST has been found mixed pattern and higher LST was located with the scatter pattern, which was related to certain LULC types within downtown, suburban 1 and 2. The result of this paper, LST and NDVI analysis exhibited a strong negative correlation without water bodies for all three portions of Yangon area. The strongest coefficient correlation was found downtown area (-0.8707) and followed suburban 1 (-0.7526) and suburban 2(-0.6923).

'버버리 프로섬'의 사례를 통해 본 전통 브랜드의 현대화 연구 - 오리지널 버버리와 버버리 프로섬의 디자인 비교를 중심으로 - (A Case Study on the Modernization of Traditional Brands, 'Burberry Prosum' - Focused on the Design Comparison between Original Burberry and Burberry Prosum -)

  • 정경희;김은실;배수정
    • 패션비즈니스
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    • 제13권2호
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    • pp.87-99
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    • 2009
  • The purpose of this study is to analyse the successful modernization strategy, and the difference between original Burberry and Burberry Prosum design. This will help in providing the fundamental information to Korean luxury fashion brands. Burberry, in particular, is rated as the most popular luxury brand in Korean fashion market. This brand has also rated 5th in sale worldwide and 1st in Korea in 2002, and was continuously been rated in 10th for the last 5 years. Related articles, fashion magazines, fashion web-site were used in this analysis, and the method was theoretical and case study. The results are divided into two categories of internal and external factors and two design patterns of check pattern and trench coat were observed. First of all, internal factor in Burberry is that they have scouted a new CEO and quickly changed their image with famous British models for the purpose of marketing strategies. They have also moved their main shop in London to Bond street, and opened shops in every country's capital cities. They were successful in achieving this by using celebrity marketing strategies with many famous celebrities. Secondly, external factor was that they have hired a designer named Christoper Bailey and this highlighted and enhanced the check pattern and trench coat. As a results, more generalized and diverse design items were presented and accessory line was enhanced, creating a much more younger image. This in turn attracted more younger customers. To sum up, original Burberry focused on classic designs, however Burberry Prosum focused on transforming traditional Burberry design into avant-garde and young. In other words, the reason for the success of this brand is highly dependent on its marketing strategies in which its uniqueness of schizophrenic cloche has appropriately represented and used in design.

A vision-based system for dynamic displacement measurement of long-span bridges: algorithm and verification

  • Ye, X.W.;Ni, Y.Q.;Wai, T.T.;Wong, K.Y.;Zhang, X.M.;Xu, F.
    • Smart Structures and Systems
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    • 제12권3_4호
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    • pp.363-379
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    • 2013
  • Dynamic displacement of structures is an important index for in-service structural condition and behavior assessment, but accurate measurement of structural displacement for large-scale civil structures such as long-span bridges still remains as a challenging task. In this paper, a vision-based dynamic displacement measurement system with the use of digital image processing technology is developed, which is featured by its distinctive characteristics in non-contact, long-distance, and high-precision structural displacement measurement. The hardware of this system is mainly composed of a high-resolution industrial CCD (charge-coupled-device) digital camera and an extended-range zoom lens. Through continuously tracing and identifying a target on the structure, the structural displacement is derived through cross-correlation analysis between the predefined pattern and the captured digital images with the aid of a pattern matching algorithm. To validate the developed system, MTS tests of sinusoidal motions under different vibration frequencies and amplitudes and shaking table tests with different excitations (the El-Centro earthquake wave and a sinusoidal motion) are carried out. Additionally, in-situ verification experiments are performed to measure the mid-span vertical displacement of the suspension Tsing Ma Bridge in the operational condition and the cable-stayed Stonecutters Bridge during loading tests. The obtained results show that the developed system exhibits an excellent capability in real-time measurement of structural displacement and can serve as a good complement to the traditional sensors.

한의학 관련 이미지 연구 (The Research about Image on Korean Medicine)

  • 김재익;명예슬;안수연;이영지;조충식
    • 대한한방내과학회지
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    • 제35권3호
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    • pp.354-365
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    • 2014
  • Objectives: Recently, the utility rate of Korean-Medical service has been a 6 percent of the domestic market share in medical service, so there is a lot of effort to increase utility rate of Korean medical service. However, in spite of the importance of image to promotion, there are still few studies about image of Korean medicine. Thus, the purpose of this study was to suggest ways to increase utility rate of Korean medical service by surveying and analysing recognition of image of Korean Medicine. Methods: People aged between 20s and 40s were targets of investigation. We divided respondents into three groups depending on relation approximation with Korean medicine (weak-related group, normal-related group, strong-related group). The questionnaire consisted of questions about images of Korean medicine, conducted through online and personal interviews. Results: In total, 282 members responded to the survey and the results of the analysis were as follows. The more a person was related to Korean medicine, the greater the tendency to experience Korean medical service. The most associated taste about Korean medical institutions was Bitterness, smell was smell of Korean medicine, color was yellow, feeling was warm, sound (instrument) was drum, and treatment pattern was Acupuncture, respectively. The most associated image of acupuncture was painful, and the most associated age of Korean medical doctors was 40s. The most associated general term of Korean medicine was physical constitution, and most associated pathological term was extravasated blood. Conclusions: This study can be very useful for future image marketing of Korean medicine because there have been no other studies about image on Korean medicine before now. But this study has also some limits like area, respondent selection, etc., so a more detailed and comprehensive survey is needed.

적응 군집화 기반 희소 부호화에 의한 영상 잡음 제거 (Adaptive Clustering based Sparse Representation for Image Denoising)

  • 김시현
    • 전기전자학회논문지
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    • 제23권3호
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    • pp.910-916
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    • 2019
  • 자연 영상의 비지역적 유사성은 다양한 영상 응용 분야에서 활용되는 중요한 특성 중에 하나이다. 영상 내 객체의 에지나 텍스쳐, 무늬 등은 비지역적으로 반복되어 나타난다. 유사도가 높은 영상 블록들로 군집을 형성하면 자연스럽게 그로부터 특징을 추출할 수 있다. 또한 군집의 크기가 클수록 원치 않는 백색 잡음에 대한 대항력을 키울 수 있다. 영상 신호 처리 중 잡음 제거 관련 연구는 백색 가산 잡음이 포함된 영상의 복원을 다룬다. 본 논문에서는 백색 잡음이 포함된 영상을 유사도에 따라 적응적으로 군집화하여 잡음 신호에 대한 이득을 향상시키고, 이를 통해 잡음을 효과적으로 제거하는 알고리듬을 제안한다. 다양한 영상과 잡음 강도에 대한 모의실험 결과로부터 제안된 알고리듬이 에지, 텍스쳐, 무늬 영역을 잘 보존하면서 잡음을 제거할 수 있음을 시각적으로 확인할 수 있고, 또한 최근 보고된 여러 방법들과의 잡음 제거 성능 수치 비교에서도 우수한 결과를 보인다.