• Information and Communications Magazine
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• v.31 no.3
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• pp.39-45
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• 2014

본 고에서는 디지털 홀로그램의 생성 및 복원 방법에 관한 주요 이슈를 다룬다. 디지털 홀로그램 특히 컴퓨터 생성 홀로그램은 최근 디지털 디스플레이 및 고속 병렬 컴퓨팅 기술의 발달과 더불어 급속한 발전을 보이고 있다. 컴퓨터 생성 홀로그램은 메쉬, 점 집합 등으로 구성된 가상 객체의 표면에서 발생한 광파가 회절되는 분포를 수치 계산하여 생성된다. 이를 위하여 파동 방정식으로부터 유도되는 주요 회절식들을 살펴보고 이를 바탕으로 한 수치 계산 모델을 제시한다. 생성된 디지털 홀로그램을 광학 장치를 통한 재생 없이 수치적 복원을 통해 복원 결과를 확인하는 기법과 관련 이슈 또한 설명한다.

• The Journal of the Korea Contents Association
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• v.21 no.11
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• pp.145-155
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• 2021

Recently because of development of technology the old cultural properties and damaged artworks are stored as digital information using digital technology and produced related contents as well as moving images or digital contents. The regenerated information and contents through digital technology conveys correct information of ancient art and helps audiences appreciate it, as well as it also stores accurate information and can be used for restoration and preservation of the work. In this study, the range of digital restoration was defined in three directions, and the exhibition of digital content with an ancillary role that can be useful the understanding of the heritage of nature and mankind using digital technology was defined as the range of digital restoration. In addition, the Ojukheon Museum in Kangneung and The Museum of Natural History in New York, which installed various digital displays to analyze and compare the types of digital display exhibitions used for digital restoration of the range, were described as examples. Through this, it was discovered that digital display exhibitions for digital restoration can effectively deliver information and stimulate participation and interest of visitors in the museums, which is able to be a positive way to preserve the heritage of nature and mankind.

• Journal of Korea Society of Industrial Information Systems
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• v.15 no.1
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• pp.25-36
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• 2010

Recently, digitizing technologies for conservation and restoration of tangible intangible cultural properties are coming into spotlight. Because cultural properties are easy to be lost and damaged over the years, After construction of cultural assets database we can reconstruct the cultural asset making use of the reverse engineering when needed, and implement digital contents such as computer graphics, 3D virtural realization, hologram, etc. So in this paper, we scrutinize visual and technical factors occurring in different types of digital restoration of cultural properties, and present problems and improvements, and try to research technological prowess and visual mechanism.

• Archives of design research
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• v.16 no.2
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• pp.67-76
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• 2003

Today, computer graphics have moved into spotlight within many related fields. The use of computer graphics in many fields as well as in design is now universalized. More than ever, those fields which utilize virtual reality are being vigorously researched and are rapidly progressing. Many advanced countries are obtaining positive results, allowing the world to learn about their culture and history by using virtual reality techniques for the restoration of cultural property. Above all, the West has utilized the diversity of the CAVE system which could best express the artificial system among virtual reality systems. However, in Korea this technology remains in its early stages of development. Moreover, the field, digital restoration of cultural property, which will be discussed in this study, hasn't yet been explored. Accordingly, this study presents the way of digitally restoring cultural property based on the CAVE through the empirical research and suggests the significance and possibility of digitally restoring cultural properly in the CAVE system. For them, this study processes the digitally restoring of Pulguksa Temple and Sokkuram and refers to the limitation and the future study following the investigation of CAVE and the introduction of applicable examples in abroad.

• Conservation Science in Museum
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• v.22
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• pp.85-96
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• 2019

The restoration of ceramics excavated in fragments is limited by the difficulty of inferring the overall shape of the original object. However, recent innovations in digital technology can help to overcome the limits of conventional restoration using handwork. This study explored the potential of digital technology by digitally restoring a shard from a white porcelain water dropper excavated at a kiln site at Sindae-ri. In order to complete the digital restoration, 3D scanning was applied to obtain scan data, and 3D modeling and texture mapping were performed. In this way, three-dimensional data with patterns and color information was acquired and the original form of the water dropper could be ascertained based on the shard. The study found that the data acquired from digital restoration can be used for various purposes, including for obtaining data on cross-sections or missing portions of a relic.

• Electronics and Telecommunications Trends
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• v.27 no.3
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• pp.32-42
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• 2012

본고에서는 디지털 홀로그래피 기술을 디지털 콘텐츠 관점에서 다룰 수 있는 연구 개발 결과를 다루었다. 디지털 홀로그래피(DH: Digital Holographic) 기술을 디지털 홀로그래픽 콘텐츠 관점으로 접근하기 위한 기반 기술 분야로서 DH 콘텐츠 저작도구 기술, 매니지먼트 기술, 공간 인식 기반 인터랙션 기술, 화질 평가 및 휴먼팩터 기술 및 응용 콘텐츠 제작 기술 등으로 분류하여 기술하였다. 또한 디지털 홀로그래픽 콘텐츠 제작을 위한 연구 개발 결과로서 3차원 영상정보 획득, 홀로그래픽 프린지 데이터 생성과 DH 콘텐츠의 광학적 수치적 복원 및 DH 콘텐츠의 운용 테스트베드 등의 구현 결과를 제시하였다. 본고에서 제시한 디지털 홀로그래픽 콘텐츠 제작을 위한 기반 기술을 향후 실용화될 디지털 홀로그램의 광학적 복원 장치와 접목한다면 새로운 형태의 홀로그래픽 실감형 콘텐츠가 활성화될 수 있을 것으로 예상된다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2010.07a
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• pp.283-284
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• 2010

디지털 홀로그래피(holography) 기술은 3차원 물체의 정보를 디지털 영상으로 기록하고 복원하는 기술이다. PSI(Phase-shifting interferometry) 디지털 홀로그래피는 여러 장의 간섭 패턴 영상으로부터 홀로그램(hologram)을 합성하고, 이로부터 3차원 영상을 복원하는 대표적인 기법이다. 본 논문에서는 PSI 디지털 홀로그램 생성에 사용되는 여러 장의 간섭 패턴 영상의 효율적인 압축 기법을 제안한다. 먼저 네 개의 간섭패턴 영상에서 JPEG2000 기반의 비트율-왜곡(rate-distortion) 특성을 분석한다. 이에 기반하여 주어진 비트량을 일정 크기 단위로 사용할 때, 복원 영상의 왜곡을 가장 효과적으로 줄일 수 있는 간섭 패턴 영상에 우선적으로 비트량을 할당한다. 실험을 통하여 제안하는 알고리듬은 네 개의 간섭패턴 영상마다 동일한 비트량을 할당하여 압축하는 기존의 방법에 비해 비트율-왜곡 측면에서 복원 영상의 왜곡을 더 효과적으로 줄일 수 있음을 확인한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.2
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• pp.188-198
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• 2021

Digital data was collected using modern three-dimensional digital technology. Current content-specific technologies were investigated through domestic and foreign cases so that three-dimensional digital technology could be applied to the utilization of various contents. First, the use of three-dimensional digital technology of architectural cultural assets has been changing from the restoration of cultural assets. Second, some of the contents produced were found to be underutilized. Third, the type of content has been changing in experience and exhibition, but the online approach was small. Fourth, digital restoration using domestic IT technology has been used as a technology to restore overseas cultural heritage. The fifth analysis of the relationship between the content types and 3D digital technologies shows the use of currently limited technologies. This study analyzed the status of digital architecture and the application of three-dimensional digital technologies to lay the foundation for the active development and utilization of content. Subsequent studies on various layers and digital technologies will be needed to revitalize digital architectural cultural assets in the future.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.6
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• pp.1690-1695
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• 2008

The 3D virtual reality digital recovery technique is a new type in protecting and displaying remains and cultural relics through which the information of cultural relics can easily be known anytime and any where. The dissertation focuses on the study of the contradiction between quality and loading speed.

• Archives of design research
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• v.16 no.1
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• pp.219-228
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• 2003

Nowadays, the progress of high technology in modern society provides humankind with the opportunity to obtain diverse information easily and quickly. Among those rapidly progressing fields of high technology, digital media field has the ability to substitute for the multimedia information society by being applied to many related fields and daily life. Specifically, the concern and enthusiasm for the restoration of cultural property has risen. So, effective methods are required to decide on the preservation, restoration and academic value of cultural property. Among these, image processing technology using computers has been introduced. The restoration of cultural property using this technique has been studied vigorously in many advanced countries because this would allow us to restore damaged parts without destroying the original asset. However, in Korea, though we have numerous examples of cultural property with recorded history, research related to the items has scarcely been conducted. Accordingly, this study focuses on the investigation of virtual reality and the techniques applicable to restoring cultural property in addition to suggesting the significance and possibility of digitally restoring cultural property following the introduction of applicable examples both domestically and abroad.