• Title/Summary/Keyword: spatial transformation

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Interpreting Characteristics of Educational Facilities Arrangement According to Jinhae's Historical Development Using Space Syntax Theory (진해 교육시설의 시대별 배치 특징에 관한 공간통사론적 해석)

  • Yang, Seung-Jung;Lee, Hyun-Hee;Lee, Jae Hong
    • Journal of the Korean Institute of Educational Facilities
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    • v.22 no.3
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    • pp.21-29
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    • 2015
  • Jinhae's educational facilities had been located in the most integrated area at the beginning. As Jinhae's spatial layout has been in a rapid growth by constructing new towns and experiencing major consolidations over years, it was argued that this morphological transformation inevitably brought to the change of the characteristics of educational facilities' arrangement. In this reason, a number of studies have discussed the ways of how they have been settled down from the beginning of Jinhae. However, they did not take into an account of both the first consolidation happened in 1985 and the second one in 2013. This paper therefore aims to investigate how Jinhae's urban structure has been transformed between the two consolidations from a syntactical perspective, and then to interpret characteristics of educational facilities arrangement accordingly. This study finds out that when Jinhae experienced the first consolidation, educational facilities were occupied in highly segregated areas in terms of both global and local integration values. However, their locations turned out to be more intelligible after the second consolidation. This suggests that they have a significant effect on the process of urban growth at local level. Although the educational facilities particularly in Pungho and Ungchun are in highly integrated spaces at global level, they are still less intelligible.

Matching Points Extraction Between Optical and TIR Images by Using SURF and Local Phase Correlation (SURF와 지역적 위상 상관도를 활용한 광학 및 열적외선 영상 간 정합쌍 추출)

  • Han, You Kyung;Choi, Jae Wan
    • Journal of Korean Society for Geospatial Information Science
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    • v.23 no.1
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    • pp.81-88
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    • 2015
  • Various satellite sensors having ranges of the visible, infrared, and thermal wavelengths have been launched due to the improvement of hardware technologies of satellite sensors development. According to the development of satellite sensors with various wavelength ranges, the fusion and integration of multisensor images are proceeded. Image matching process is an essential step for the application of multisensor images. Some algorithms, such as SIFT and SURF, have been proposed to co-register satellite images. However, when the existing algorithms are applied to extract matching points between optical and thermal images, high accuracy of co-registration might not be guaranteed because these images have difference spectral and spatial characteristics. In this paper, location of control points in a reference image is extracted by SURF, and then, location of their corresponding pairs is estimated from the correlation of the local similarity. In the case of local similarity, phase correlation method, which is based on fourier transformation, is applied. In the experiments by simulated, Landsat-8, and ASTER datasets, the proposed algorithm could extract reliable matching points compared to the existing SURF-based method.

Extraction of Soil Wetness Information and Application to Distribution-Type Rainfall-Runoff Model Utilizing Satellite Image Data and GIS (위성영상자료와 GIS를 활용한 토양함수정보 추출 및 분포형 강우-유출 모형 적용)

  • Lee, Jin-Duk;Lee, Jung-Sik;Hur, Chan-Hoe;Kim, Suk-Dong
    • Journal of Korean Society for Geospatial Information Science
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    • v.19 no.3
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    • pp.23-32
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    • 2011
  • This research uses a distributed model, Vflo which can devide subwater shed into square grids and interpret diverse topographic elements which are obtained through GIS processing. To use the distributed model, soil wetness information was extracted through Tasseled Cap transformation from LANDSAT 7 $ETM^+$ satellite data and then they were applied to each cell of the test area, unlike previous studies in which have applied average soil condition of river basin uniformly regardless of space-difference in subwater shed. As a resut of the research, it was ascertained the spatial change of soil wetness is suited to the distributed model in a subwater shed. In addition, we derived out a relation between soil wetness of image collection time and 10 days-preceded rainfall and improved the feasibility of weights obtained by the relation equation.

Hybrid Affine Registration Using Intensity Similarity and Feature Similarity for Pathology Detection

  • June-Sik Kim;Ho-Sung Kim;Jong-Min Lee;Jae-Seok Kim;In-Young Kim;Sun I. Kim
    • Journal of Biomedical Engineering Research
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    • v.23 no.1
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    • pp.39-47
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    • 2002
  • The objective of this study is to provide a Precise form of spatial normalization with affine transformation. The quantitative comparison of the brain architecture across different subjects requires a common coordinate system. For the common coordinate system, not only global brain but also a local region of interest should be spatially normalized. Registration using mutual information generally matches the whose brain well. However. a region of interest may not be normalized compared to the feature-based methods with the landmarks. The hybrid method of this Paper utilizes feature information of the local region as well as intensity similarity. Central gray nuclei of a brain including copus callosum, which is used for feature in Schizophrenia detection, is appropriately normalized by the hybrid method. In the results section. our method is compared with mutual information only method and Talairach mapping with schizophrenia Patients. and is shown how it accurately normalizes feature .

Mechanical Characteristics of Retractable Radial Cable Roof Systems (개폐식 방사형 케이블 지붕 시스템의 역학적 특성)

  • Park, Kang-Geun;Lee, Dong-Woo;Choe, Dong-Il
    • Journal of Korean Association for Spatial Structures
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    • v.17 no.2
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    • pp.21-32
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    • 2017
  • The objective of this study is to analysis the mechanical characteristics on the geometric nonlinear behavior of radial cable roof systems for long span retractable cable roof structures. The retractable roof is designed as a full control system to overcome extreme outdoor environments such as extreme hot or cold weather, strong wind or sunlight, and the cable roof greatly can reduce roof weight compared to other rigid structural system. A retractable cable roof system is a type of structures in which the part of entire roof can be opened and closed. The radial cable roof is an effective structural system for large span retractable roofs, the outer perimeter of the roof is a fixed membrane roof and the middle part is a roof that can be opened and closed. The double arrangement cables of a radial cable truss roof system with reverse curvature works more effectively as a load bearing cables, the cable system can carry vertical load in up and downward direction. In this paper, to analyze the mechanical characteristics of a radial cable roof system with central posts, the authors will investigate the tensile forces of bearing cables, stabilized cables, ring cables, and the deflection of roof according to the height of the post or hub that affects the sag ratio of cable truss. The tensile forces of the cables and the deflection of the roof are compared for the cases when the retractable roof is closed and opened.

A Study on the Attributes and Expression Characteristics of 'Mix & Match' in Interior Design (실내디자인에서 'Mix & Match'의 속성 및 표현특성에 관한 연구)

  • Cho, Sung-Heui;Choi, In-Young
    • Korean Institute of Interior Design Journal
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    • v.19 no.1
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    • pp.55-62
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    • 2010
  • This study examines attributes and expression characteristics of 'Mix & Match' which is one of the major current trends in interior designs. The concept and background of 'Mix & Match' was ascertained through research of previous documents and studies, and its attributes were explored. In order to examine the expression characteristics to see how they are expressed in actual interior designs, case analyses were carried out centering on the expression elements such as material, light & lighting, color, furniture and objects which were regarded as important in previous studies and related articles so far. The case analyses were carried out for works where the concept of 'Mix & Match' was prominent in designs produced in 2007 and 2008, chosen from the main reports of the representative interior design journals, 'Interiors' and 'INTERNI & Decor'. As a result, it has been found that 'Mix & Match' is not limited to one attribute but the temporal, spatial and genre attributes are present all at the same time, or various expression elements exist in one attribute. This is a distinct character commonly shown in most of the cases and each expression element is expressed in variety according to spatial concept, from a simple parallel to substitution, transfer and modification (simplification, transformation of the scale, rate modification etc.) Therefore, in creating the space for 'Mix & Match' or in interpretation of it, the understanding of these expression characteristics would make it possible for clearer and more various applications of design, and furthermore will be meaningful for supply and accumulation of reference in design communication.

Annotation System using Spatial Augmented Reality Display with Half-slivered Mirror (반투영 거울 기반 공간 증강 현실 환경의 전시물 안내 시스템)

  • Kim, Jung-Hoon;Lee, Young-Bo;Park, Hyun-Woo;Yun, Tae-Soo;Lee, Dong-Hoon
    • Journal of Korea Society of Industrial Information Systems
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    • v.13 no.1
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    • pp.37-45
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    • 2008
  • This paper proposes a half-silvered mirror display system designed to demonstrate useful information about things on display into the air. It helps the spectators gain quick access to information near the area where the things are put on display. This paper deals with three matters: First, tracking based on camera images created in real time enables the provision of information about the things that are both still and moving. Second, as information is output based on the real-time coordinates of things on display, the parallel processing-based tracking algorithm is used to ensure smooth transfer. Third, a half-mirror is placed in front of the display area to establish an augmented reality system and visual distortion caused by mirror angle is adjusted by the reflection transformation matrix. The objectives of this system are to arouse the spectators' interest in things on display and offer easy and quick access to information about them.

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Spatial Structure for Laboring Classes in Manchester: Mary Barton and The Condition of the Working Class in England (맨체스터의 노동계층의 공간 구조: 『메리바튼』과 『영국 노동계층의 상태』를 중심으로)

  • Hyub Lee
    • The Journal of the Convergence on Culture Technology
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    • v.10 no.2
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    • pp.209-214
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    • 2024
  • The purpose of this study is to analyze the spatial structure of laboring classes in Manchester in the 19th century. Manchester had districts where laboring classes lived in destitution. Elizabeth Gaskell's Mary Barton demonstrates the miserable state of laboring classes by depicting their small, dirty living residential spaces. Engels's The Condition of the Working Class in England analyzes the laboring classes in industrial areas in England, especially Manchester. The laboring classes' districts formed in a set pattern were separated from the area for bourgeois. It lied in the old district near commercial areas, while upper classes were outside areas. It was the dominant ideology that drove the transformation of Manchester as an industrial city characterized by separation.

A Study on the Improvement classification accuracy of Land Cover using the Aerial hyperspectral image with PCA (항공 하이퍼스펙트럴 영상의 PCA기법 적용을 통한 토지 피복 분류 정확도 개선 방안에 관한 연구)

  • Choi, Byoung Gil;Na, Young Woo;Kim, Seung Hyun;Lee, Jung Il
    • Journal of Korean Society for Geospatial Information Science
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    • v.22 no.1
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    • pp.81-88
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    • 2014
  • The researcher of this study applied PCA on aerial hyper-spectral sensor and selectively combined bands which contain high amount of information, creating five types of PCA images. By applying Spectral Angle Mapping-supervised classification technique on each type of image, classification process was carried out and accuracy was evaluated. The test result showed that the amount of information contained in the first band of PCA-transformation image was 76.74% and the second accumulated band contained 98.40%, suggesting that most of information were contained in the first and the second PCA components. Quantitative classification accuracy evaluation of each type of image showed that total accuracy, producer's accuracy and user's accuracy had similar patterns. What drew the researcher's attention was the fact that the first and the second bands of the PCA-transformation image had the highest accuracy according to the classification accuracy although it was believed that more than four bands of PCA-transformation image should be contained in order to secure accuracy when doing the qualitative classification accuracy.

Making Better Use of Historical Maps in GIS

  • Shimizu, Eihan
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2002.04a
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    • pp.25-33
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    • 2002
  • Historical maps are precious materials, which show spatial distribution of land use, streets and so on at the time when the maps were produced. In analysis of historical maps, the most practical method is to compare them with the present ones, for instance by overlaying them. However, the low precision, in the geometrical sense, of the historical maps makes the task of comparison very difficult. This drawback brings us the idea to incorporate the historical maps into GIS after rubber-sheet transformation, i.e. geometric correction, of them. It makes comparing and overlaying multiple maps from different time periods. Furthermore, it gives map-scales to the historical maps, which are not in general represented on the old maps, and if we allow ourselves to ignore the changes in terrain from past to present, it will make overlaying of present contour lines on the historical maps. As a result, we can bring the points of view of quantitative consideration and three-dimensional visualization into analyses of historical map. We have addressed incorporating historical maps produced in Edo period (1603-1867) in Japan into our GIS for Tokyo. This article shows the outline of our procedures and some applications, e.g., overlaying different maps from Edo period to present, quantitative analyses of land use in Edo, and visualization of landscape of Edo.

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