• Title/Summary/Keyword: As-Built Drawing

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Accuracy Comparison Between Image-based 3D Reconstruction Technique and Terrestrial LiDAR for As-built BIM of Outdoor Structures

  • Lee, Jisang;Hong, Seunghwan;Cho, Hanjin;Park, Ilsuk;Cho, Hyoungsig;Sohn, Hong-Gyoo
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.33 no.6
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    • pp.557-567
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    • 2015
  • With the increasing demands of 3D spatial information in urban environment, the importance of point clouds generation techniques have been increased. In particular, for as-built BIM, the point clouds with the high accuracy and density is required to describe the detail information of building components. Since the terrestrial LiDAR has high performance in terms of accuracy and point density, it has been widely used for as-built 3D modelling. However, the high cost of devices is obstacle for general uses, and the image-based 3D reconstruction technique is being a new attraction as an alternative solution. This paper compares the image-based 3D reconstruction technique and the terrestrial LiDAR in point of establishing the as-built BIM of outdoor structures. The point clouds generated from the image-based 3D reconstruction technique could roughly present the 3D shape of a building, but could not precisely express detail information, such as windows, doors and a roof of building. There were 13.2~28.9 cm of RMSE between the terrestrial LiDAR scanning data and the point clouds, which generated from smartphone and DSLR camera images. In conclusion, the results demonstrate that the image-based 3D reconstruction can be used in drawing building footprint and wireframe, and the terrestrial LiDAR is suitable for detail 3D outdoor modeling.

Update/Revision of Digital Map by Using the Drawing of Work Completion Surveying (준공측량도면을 이용한 수치지도 수정/갱신)

  • Kim, Won-Dae;Lee, Kang-Won;Park, Hong-Gi
    • Journal of Korean Society for Geospatial Information Science
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    • v.8 no.1 s.15
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    • pp.85-95
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    • 2000
  • There is a recent emphasis on the need for updating and revision of existing digital maps as more digital maps are used and produced. Various type of data sources, such as photographs, ground surveyed data and satellite images, are used in the revision and the updating process. The process is very time consuming and costly, especially for small regional areas. This study, attempts to present an effective update/revision method using the as-built surveying drawings and the accuracy of the digital map which has been updated and revised using this method was also investigated. This study showed that by using as-built surveying drawings of scale 1/1,200 to update a digital map of scale 1/1,000, the resulting accuracy satisfied the requirements of the national digital map accuracy specification for the corresponding scale. The necessity of the existence of the necessary drawings and maps is a requirement of this process and it is also suggested that densification of local control points especially in the urban areas is necessary for producing accurate as-built surveying drawings. This would require the establishment of rules and regulations which would require constructions to perform as-built surveying, immediately after the construction has been completed.

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A Study on Characterization of Apartment Complex Exterior Space by Purpose and Type - On Matters of Apartment Complexes Built·Redeveloped Since Year 2005 in Seoul - (공동주택 외부 공간의 유형(類型)에 따른 특성화에 관한 연구 - 2005년 이후, 서울시 재건축·재개발된 공동주택 외부 공간 사례 중심으로 -)

  • Yi, Young-Ran;Chu, Beom
    • Korean Institute of Interior Design Journal
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    • v.22 no.4
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    • pp.130-140
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    • 2013
  • As the modern-day Apartment Complex has varied community facilities such as health care center and self-improvement institutions affecting the residents' quality of life, this paper is for the in-depth understanding on how such Exterior Space vary and development plan should go. To be specific, this paper is to, based upon the theoretical contemplation on the concept and role of the Exterior Space to Apartment Complex, as well as drawing a conclusion on the development plan for subject areas as assessed. Subject areas of this paper are a total of twelve Apartment Complexes built since Year 2005 in nine different regions in Seoul. As such specialties and features as leisure of the senior citizen and female residents, the subject Apartment Complexes have provided opportunities, active and inactive, to the residents for leisure by qualitative improvement of facilities, as well as establishing the discrete brand value for the Exterior Space with featured design and spatial properties. Also notable is the eco-friendliness of the Exterior Space with cutting-edge technology, eventually appreciating the value of Apartment Complex.

A Study on Post Occupancy Evaluation about the Community Facilities of a Rental Apartment - Focus on the 4 Apartment Built in Pangyo after 2009 - (임대 아파트 내 커뮤니티시설의 거주 후 평가에 대한 연구 - 2009년 이후 신축된 판교 4개 아파트를 중심으로 -)

  • Kim, Min-Gyu
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.34 no.2
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    • pp.59-66
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    • 2018
  • The purpose of this study is to investigate the method on improving the frequency of use and satisfaction rate of the community facilities and to evaluate relation between improving the frequency of use and satisfaction rate of the community facilities and improving the sense of community in apartments. The research subjects of this study is the four public lease apartments which is built around same period with same design guide. The survey method is a questionnaire survey, a experimental study, focus group interview, an analysing drawing. The result of study is as follows. The first, the frequency of use and satisfaction rate have been effected by the operation management system as well as the physical circumstance. The second, The frequency of use and satisfaction rate of the community facilities have had positive correlation with sense of community. The third, multimedia room and conference room with low usability need to change a multipurpose space such as cafe, classroom for learning on artistic topic with high demand from occupant. Finally, a mindset shift is required for architects to inspire community facilities as an important mediated space improving the sense of community by suggesting spaces for leisure and hobby activities.

Definition of 3D Modeling Level of Detail in BIM Regeneration Through Reverse Engineering - Case Study on 3D Modeling Using Terrestrial LiDAR - (역설계를 통해 BIM 구축시에 3D 모델링에 대한 세밀도(LoD) 정립 - 지상 LiDAR 활용한 3D 모델링 연구 중심 -)

  • Chae, Jae-Hyun;Lee, Ji-Yeong
    • Journal of KIBIM
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    • v.7 no.4
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    • pp.8-20
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    • 2017
  • When it comes to set up the BIM through the reverse engineering, the level of detail(LoD) required for finalized outcomes is different from each purpose. Therefore, it is necessary to establish some concrete criteria which describe the definition of LoDs on 3D modeling for the purpose of each reverse engineering. This research shows the criteria of the 1) positional accuracy, 2) generalization level, 3) scale level, 4) scope of description, and 5) the area available for application by classifying LoD from 1 to 6 on 3D modeling for each purpose of reverse engineering. Moreover, through applying those criteria for the 3D point cloud dataset of building made by terrestrial LiDAR, this research finds out the working hour of 3D modeling of reverse engineering by each LoDs according to defined LoD criteria for each level. It is expected that those findings, how those criteria of LoD on reverse engineering are utilized for modeling-workers to decide whether the outcomes can be suitable for their budget, applicable fields or not, would contribute to help them as a basic information.

Type and Characteristics of fabrics excavated from Chonmachong of Shilla Era - focused on the fabrics which are in the Kyongju Museum′s collection - (신라시대 천마총 출토 직물의 유형과 특성 -현 경주박물관 소장직물을 중심으로-)

  • 권영숙;조현혹;장현주;김종오
    • Journal of the Korean Society of Costume
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    • v.50 no.7
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    • pp.129-139
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    • 2000
  • The Chonmachong (Tumulus No. 155 in Whangnam-dong, Kyungju, Korea), which was unearthed in 1973, is an ancient tomb built in the Shilla Era between the 5th∼6th centuries by the method of Juk-suk-mok-gwak. With the excavation of this tomb more than 11,500 articles of luxurious and splendid relics including gold and silver ornaments, weaponry and horse gears were obtained. Among the excavated articles, the saddle flap with a drawing of flying horse on it is the first relic of its kind from the Shilla Era. and 'Chonma'(a flying horse), the name of the tomb. was named after this drawing. The saddle flap is highly valuable in that it provides the idea of how goad the people of Shilla were at drawing. Although a lot of researches have been released about the relics from the Chonmachong, this study is to focus on the fabrics from the excavation, all of which are in the Kyongiu Museum's collection. The findings of this study are as follows : 1 The subject of this study is mainly on the fabrics used in horse gears, the pieces of cloth that were used to spread on a saddle or to underlay beneath a saddle. As the Shilla Dynasty tried to restrict excessive ornamentation on horses and it is assumed that the fabrics used are different. according to the social status. 2. The subject articles are four plain fabrics, three fabrics of combined -construction and one braid, the warp-faced compound woven silks of combined-construction was found for the first tinge in Korea, and is the typical quality sick with patterns woven with dyed threads in different colors. 3. It is ascertained by the Chonmachong excavation that polychrome woven silk was used not only for the clothes of the upper classes but also for the ornaments of their horses in the Era of the Three Kingdoms.

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A Study on the character of Urban Entertainment Center in multi-anchor and exposure time - Focusing on Cheongryanri station and Yongsan station - (집객시설과 노출시간에 따른 도심 엔터테인먼트형 복합상업시 설(UEC)의 특징에 관한 연구 - 청량리역과 용산역을 중심으로 -)

  • Kim, Hyeongjung
    • Korean Institute of Interior Design Journal
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    • v.22 no.1
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    • pp.283-290
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    • 2013
  • The change of shopping environment created new emerging type of shopping center after 1990's, Urban Entertainment Center(UEC) in northen America. One hand traditional shopping center was retail-centered, the other hand UEC is entertainment-centered and offers the trinity of synergy. Each components, that are retail, dining and entertainment, play a role of drawing people, extending duration of visiting and making people revisit then the synergy makes commercial profit in shopping center. As northen America many of shopping centers with complex have been built in Korea since 2000 and some projects is planning by the change of shopping environment and regenerating urban. Although the term of "UEC" is used in Korea, it seems to be added entertainment facilities to shopping center without considering on commercial strategy. This study will take a look at mix and duration of visit which ULI stresses in UEC development and comparing with those of Yongsan Station and Chyeongrangri Station which are built recently in seoul, it will get characters and situation of these UECs. Finally, the analysis is to be used as a planning data in UEC development.

Design and Implementation of Immersive Media System Based on Dynamic Projection Mapping and Gesture Recognition (동적 프로젝션 맵핑과 제스처 인식 기반의 실감 미디어 시스템 설계 및 구현)

  • Kim, Sang Joon;Koh, You Jon;Choi, Yoo-Joo
    • KIPS Transactions on Software and Data Engineering
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    • v.9 no.3
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    • pp.109-122
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    • 2020
  • In recent, projection mapping, which has attracted high attention in the field of realistic media, is regarded as a technology to increase the users' immersion. However, most existing methods perform projection mapping on static objects. In this paper, we developed a technology to track the movements of users and dynamically map the media contents to the users' bodies. The projected media content is built by predefined gestures just using the user's bare hands without the special devices. An interactive immersive media system has been implemented by integrating these dynamic projection mapping technologies and gesture-based drawing technologies. The proposed realistic media system recognizes the movements and open / closed states of the user 's hands, selects the functions necessary to draw a picture. The users can freely draw the picture by changing the color of the brush using the colors of any real objects. In addition, the user's drawing is dynamically projected on the user's body, allowing the user to design and wear his t-shirt in real-time.

A Study on the Architectural Characteristics and Alterations of Sinan Kim Hwan-gi's House (신안 김환기고택의 건축과 변화과정에 관한 연구)

  • Shin, Woong-Ju;Choi, Gyu-Woong;Kim, Hyun-Tae
    • Journal of the Korean Institute of Rural Architecture
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    • v.20 no.3
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    • pp.11-18
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    • 2018
  • Suhwa Kim Hwan-gi established his own unique world of art based on Korean-style lyricism with his sophisticated and sublimated formative language as the first generation of Korean abstract artist. He made his name known not only in Korea but New York and Paris, the center of contemporary art. Presently, there is almost no material left for us to examine how Kim Hwan-gi's house looked in the first place. But there is a painting that chef Kim Am-gi possesses where we can find the image of painter Kim Hwan-gi's house drawn by recalling the memories at home in a far-off land. With that, we can see it should be the original looks of that house. To examine the original looks of Kim Hwan-gi's house when it was built, this author studied the closure land registration map. By analyzing 29 land registration maps around Eupdong-ri of Gijwa-myeon in Muan-gun of Jeollanam-do produced in 1917 which National Archives of Korea possesses, this researcher could figure out the status of land registration around Kim Hwan-gi's house with No. 15 and 22 drawing boards. According to the results of considering aerial photographs after the emancipation that National Geographic Information Institute possesses, this author has found that the arrangement of Kim Hwan-gi's house was changed from 1954 up to 2008. In 1954 aerophotos, we can see the main building and studio in Kim Hwan-gi's house and there was an additional structure between them. Kim Hwan-gi's house was built before 1925. The main building presently designated as a cultural asset and also the sarangchae arranged in the east and the studio, too, were built in the similar period.

A Study on Characteristic of Super-Tall Mixed-Use Residential Building in the Outdoor Transition Zone (초고층 주거복합건물의 기단부 계획특성 분석에 관한 연구)

  • Kim, Kyoung min;Je, Hae seong
    • KIEAE Journal
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    • v.7 no.4
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    • pp.75-80
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    • 2007
  • The purpose of this study is to analyze architectural plans of lower part of super tall mixed-use residential building for understanding its functions for urban. The area of this research are limited to super tall mixed-use residential building which were built in Seoul, Kyoung-gi area, and new towns. For this purpose, theories for super tall mixed-use residential building and non-housing parts were researched, and characteristics of selected cases for field research were analyzed by studying drawing materials. The research focused on scale, type of building, included programs for public spaces, and characteristics of location. As a result, every cases were designed as 'outdoor transition zone-centered type', and for urban function, non-housing facilities were condensed to increase convenience. In addition, ratio of non-housing part were incresesed with public spaces design for residents, and various programs were inserted.