• 제목/요약/키워드: Visual Transformation

검색결과 250건 처리시간 0.024초

MPEG-7 Homogeneous Texture Descriptor

  • Ro, Yong-Man;Kim, Mun-Churl;Kang, Ho-Kyung;Manjunath, B.S.;Kim, Jin-Woong
    • ETRI Journal
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    • 제23권2호
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    • pp.41-51
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    • 2001
  • MPEG-7 standardization work has started with the aims of providing fundamental tools for describing multimedia contents. MPEG-7 defines the syntax and semantics of descriptors and description schemes so that they may be used as fundamental tools for multimedia content description. In this paper, we introduce a texture based image description and retrieval method, which is adopted as the homogeneous texture descriptor in the visual part of the MPEG-7 final committee draft. The current MPEG-7 homogeneous texture descriptor consists of the mean, the standard deviation value of an image, energy, and energy deviation values of Fourier transform of the image. These are extracted from partitioned frequency channels based on the human visual system (HVS). For reliable extraction of the texture descriptor, Radon transformation is employed. This is suitable for HVS behavior. We also introduce various matching methods; for example, intensity-invariant, rotation-invariant and/or scale-invariant matching. This technique retrieves relevant texture images when the user gives a querying texture image. In order to show the promising performance of the texture descriptor, we take the experimental results with the MPEG-7 test sets. Experimental results show that the MPEG-7 texture descriptor gives an efficient and effective retrieval rate. Furthermore, it gives fast feature extraction time for constructing the texture descriptor.

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미국의료시설 응급부의 시대적 변천과 공간적 특성에 관한 연구 (A Chronological Study on the Transformation and the Spatial Characteristics of Emergency department in the United States)

  • 이수경;최윤경
    • 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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    • 제24권3호
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    • pp.17-27
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    • 2018
  • Purpose: This study aims to examine spatial characteristics of emergency department Chronologically through case studies; and to consider the social implication of these spatial changes. Methods: In this study, a total of eight emergency departments, one for each period, were selected in order to analyze the spatial characteristics. The spatial maps of Space Syntax were employed for analyzing case studies. Results: The spatial configuration of emergency department has been changed from five or more emergency department specialties to four or less specialties such as psychiatric, pediatrics, emergency, and trauma. In the case of care initiation area, the concentrated arrangement mode was switched from the distributed arrangement mode. The spatial maps indicate that it can be seen that the tree structure changes to an annular structure emphasizing the connection between the spaces in the emergency department. This shows that the space efficiency, safe, visual control and flexibility in the planning of the emergency department are important factors affecting the spatial structure of the emergency department. Implications: In the future, it is expected that Korean emergency department will be more focused on efficiency, safe, visual control, and flexibility in the planning as in the case studies of the United States.

Development of KOGD2003 Geoid Model and its Implementation by Visual Software

  • LEE Suk-Bae;SUH Yong-Woon
    • Korean Journal of Geomatics
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    • 제5권1호
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    • pp.43-49
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    • 2005
  • It is well known that GPS technique can be used for high accuracy leveling positioning if a precise geoid model is available to use at a surveying point. In this study, KOGD2003 geoid model was developed in and around Korean peninsula and this geoid model could be achieved by combining GPS/leveling data with the formerly developed KOGD2002. To this end, the software for orthometric height obtaining and geodetic datum transformation has been implemented with the visual C++ language, what we called GPS-GeoL v.1.0. In order to evaluate the performance and the accuracy of the software, GPS field tests were carried out in the Korean second-order leveling network over Chollabukdo area. Results of the tests have shown that the mean value of the differences between outputs of the software developed in this research and officially announced orthometric heights by NGII (National Geographic Information Institute) was 0.0221 m and also those of RMS was 0.0332 m. Therefore, it was possible to conclude that the KOGD2003 and GPS-GeoL v.1.0 software could be used to determine orthometric heights for civil construction field applications with cm-level accuracy.

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웨이블릿 변환 및 인간 시각 시스템을 이용한 원문 워터마킹 (Image Watermarking using Wavelet Transform and Human Visual System)

  • 김상국;김태중;황재호;이재광
    • 한국콘텐츠학회논문지
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    • 제4권3호
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    • pp.61-70
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    • 2004
  • 최근 인터넷을 통하여 멀티미디어 데이터와 응용물들이 아주 쉽고 빠르게 분배되며, 전자상거래와 온라인 서비스 등이 급격히 성장하고 있다. 따라서 디지털 데이터에 워터마크를 삽입하여 소유권을 보호하고 데이터의 무결성을 보증하도록 하는 연구가 활발히 진행되고 있다. 본 논문에서는 디지털 이미지를 대상으로 웨이블릿 변환과정을 거쳐 3개의 레벨로 고주파 밴드와 저주파 밴드로 분해하고, 그 후 중주파 밴드에서 시각적으로 중요한 계수를 찾아 인간 시각 시스템(HVS) 기술을 이용하여 눈의 특성에 맞게 워터마크를 삽입함으로써 한층 향상된 화질과 굳건함을 보여 준다. 또한 제안한 워터마킹 알고리즘의 성능평가를 위한 모의실험에서는 워터마크에 대한 여러 가지 공격에서도 삽입된 워터마크가 검출됨을 증명하고 PSNR 값을 구한 복원화질이 우수함을 보여 준다.

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촉지적 공간을 통한 시간성에 관한 연구(2) - 건축가 조성룡의 선유도공원과 꿈마루를 중심으로 - (A study on the Temporality through Haptic Space(2) - Focused on Joh Sung-yong's Seonyudo Park and Kkummaru -)

  • 박미영
    • 한국실내디자인학회논문집
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    • 제23권1호
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    • pp.96-104
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    • 2014
  • The purpose of this study is to investigate Seonyudo Park and Kkummaru in terms of haptic space. This is also an attempt to explore temporality of appearing in architectural spaces with reference to cinematic expression in which time is visible and perceptible. The film of Chris Marker's La Jet$\acute{e}$e depicts temporal relationship by indeterminate continuum, reading the space on the disjunctive relationships of visual and auditory, and aberrance of time and space. Based on the three categories that is derived from those discussions, this study analyzes the experience of non-chronological time induced by architectural devices: the bifurcation of indeterminate circulation, the readability of space on the disjunction of visual and auditory, and the border-dismantling. Therefore, this study have a relationship with the contemporary discourse on time and events as transformation and becoming, and it means to escape from the deterministic thinking to emphasize invariability and space rather than variation and time.

카오스의 관점에서 본 르네상스의 수학과 미술 (Mathematics and Arts of Renaissance on the Chaotic Perspective)

  • 계영희;오진경
    • 한국수학사학회지
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    • 제19권2호
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    • pp.59-76
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    • 2006
  • 본 논문은 탈근대화의 영향으로 등장한 카오스 이론의 시각으로, 수학과 미술의 관련성을 연구하였다 중세 말에서 르네상스로 접어드는 13-14세기, 르네상스의 개화기인 15, 16세기 그리고 16세기말에서 바로크 시대로 접어드는 세 시기에 시대정신이 역동적 체계에서 어떻게 구축되는지를 조망하였다. 시간의 흐름과 더불어 역동적으로 변모해가는 문화와 역사는복잡계의 전형이기 때문이다.

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CCTV 영상보안 위한 AES 암호 알고리듬의 효율적인 구현 (An Efficient Implementation of AES Encryption Algorithm for CCTV Image Security)

  • 강민섭
    • 한국인터넷방송통신학회논문지
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    • 제21권2호
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    • pp.1-6
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    • 2021
  • 본 논문에서는 C# 언어를 이용하여 CCTV 영상보안 시스템의 효율적인 구현을 제안한다. 제안한 방법에서는 AES 알고리듬의 각 라운드 과정에서 요구되는 지연시간의 최소화를 위한 합성체 기반의 S-Box를 설계하고, 이를 기반으로 한 영상보안 시스템을 GF(((22)2)2) 상에서 구현한다. 또한, 메모리 공간의 최소화를 위해서 각 라운드 변환 및 키 스케쥴링 과정에서 필요한 S-Box를 공동으로 사용하도록 설계한다. 성능평가를 통하여 기존의 방법 보다 제안한 방법이 보다 효율적임을 확인하였다. 제안한 CCTV 영상보안 시스템은 Visual Studio 2010을 사용하여 C# 언어로 구현하였다.

현대회화에서의 형태와 물질 -Digital Transfiguration에 관한 연구- (Digital painting: Image transfonnation, simulation, heterologie and transfonnation)

  • 정숙영
    • 조형예술학연구
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    • 제10권
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    • pp.161-181
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    • 2006
  • The words which appeared in my theoretical study and work are image transformation to digital painting, simulation, heterologie and transfiguration, etc. Firstly, let's look into 'digital era' or 'new media era'. Nowadays, the image world including painting within the rapid social and cultural change, which is called as digital era, is having the dramatic change. Together with the development of scientific technology, large number of events which was deemed to be impossible is happening as real in image world Moreover, these changes in image world is greatly influencing to our life. The word which compresses this change of image world and shows is 'digital'. Digit, which means fingers in Latin, indicates separately changing signal, and to be more narrow, it indicates the continual signal of '0' and ' 1' in computer. The opposite word is 'analogue'. As analogue is the word meaning 'infer' or 'similarity', it indicates the signal or form which continuously changes along the series of time when it is compared to digital. Instead of analogue, digital is embossed as a major ruler along the whole area of our current culture. In whole culture and art area, and in whole generalscience, digital is appearing as it has the modernism and importance. The prefix, 'digital', e.g. digital media, digital culture, digital design, digital philosophy, etc, is treated as the synonym of modernism and something new. This advent of digital results the innovative change to the image world, creates the new beauty experience which we could not experience before, and forecasts the formation of advanced art and expansion of creative area. Various intellectual activities using computer is developing the whole world with making the infrastructure. Computer in painting work immediately accomplishes the idea of painters, takes part in simulation work, contingency such as abrupt reversal, extraction, twisting, shaking, obscureness, overlapping, etc, and timing to stimulate the creativity of painters, and provides digital formative language which enables new visual experience to the audience. When the change of digital era, the image appeared in my work is shown in 'transfiguration' like drawing. The word, 'transfiguration' does not indicate the completed and fixed real substance but indicate endlessly moving and floating shape. Thus, this concept is opposite to the substantial consideration, so that various concepts which is able to replace this in accordance with the similar cases are also exist such as change, deterioration, mutation, deformity of appearance and morphing which is frequently used in computer as a technical word. These concepts are not clearly classified, and variably and complicatedly related. Transfiguration basically means the denial of "objectivity' and '(continual) stagnation' or deviation from those. This phenomenon is appeared through the all art schools of art ever since the realism is denied in the 19th century. It is called as 'deformation' in case of expressionism, futurism, cubism, etc, in the beginning of the century, which its former indication is mostly preserved within the process of structural deviation and which has the realistic limit which should be preserved. On the contrary, dramatic transfiguration which has been showing in the modern era through surrealism is different in the point that dramatic transfiguration tends to show the deterioration and deviation rather than the preservation of indicated object. From this point, transfiguration coming out from morphing using computer deteriorates and hides the reality and furthermore, it replaces the 'reality'. Moreover, transfiguration is closely approached to the world of fake or 'imaginary' simulation world of Baudrillard. According to Baudrillard, the image hides and deteriorates the reality, and furthermore, expresses 'not existing' to 'imaginary' under the name of transfiguration. Certain reality, that is, image which is absent from the reality is created and overflowed, so that it finally replaces the reality. This is simulation as it is said by Baudrillard. In turn, Georges Bataille discusses about the image which is produced by digital technology in terms of heterologie. Image of heterologie is the visual signal which is established with the media. Image of media is to have the continuous characteristics of produce, extinction, and transformation, and its clear boundary between images becomes meaningless. The meaning of composition, excess, violation, etc of digital image is explained to heterological study or heteologie suggested as important meaning of Georges Bataille who is a heretic philosopher. As the form and image of mutation shows the shape in accordance with mechanical production, heterologie is introduced as very low materialism (or bas materialisme), in this theory. Heterologie as low materialism which is gradually changing is developing as a different concept and analysis because of the change of time in the late 20s century beside high or low meaning. Including my image, all images non-standardizes and transforms the code. However, reappearance and non-standardization of this code does not seem to be simple. The problem of transformation caused by transfiguration which appears in my digital drawing painting, simulation, heterologie, etc, are the continual problems. Moreover, the subject such as existence of human being, distance from the real life, politics and social problems are being extended to actual research and various expressing work. Especially, individual image world is established by digital painting transfiguration technique, and its change and review start to have the durability. The consciousness of observers who look at the image is changing the subject. Together with theoretical research, researchers are to establish the first step to approach to various image change of digital era painting through transfiguration technique using our realistic and historical image.

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인공지능을 이용한 영화제작 : 시각효과를 중심으로 (Film Production Using Artificial Intelligence with a Focus on Visual Effects)

  • 유태경
    • 한국엔터테인먼트산업학회논문지
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    • 제15권1호
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    • pp.53-62
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    • 2021
  • 영화는 대중에게 처음 소개된 이래로 테크놀로지의 발전과 변화 과정을 함께하고 있다. 영화 제작 과정에 시각효과를 중심으로 한 포스트 프로덕션과 디지털 기술들이 본격적으로 적용되면서 영화 산업은 제작 방식에 있어서 큰 변화를 겪었을 뿐만 아니라 최신 기술들을 폭넓게 수용하며 산업적 기회의 폭을 넓혀가고 있다. 디지털 영화로 변화한 지 오래지 않은 지금, 영화의 디지털화가 시작되기도 전인 1956년 다트머스 회의에서 처음 알려진 인공지능이란 개념이 다시 영화 산업의 큰 변화를 가져올 것으로 예상된다. 디지털 영화의 제작 파이프라인은 거대한 디지털 데이터를 체계적으로 운용하고 만들어 내기 때문에 머신러닝과 딥러닝으로 대표되는 최근 인공지능 기술들을 적용하기 용이하고 시각효과 제작 과정에는 반복적인 작업과 분석을 통한 재현이 많고 계산 시간이 오래 걸리는 과정들이 있기 때문에 최근 주요 시각효과 스튜디오들을 중심으로 인공지능 기술의 활용이 두드러지고 있다. 본 연구에서는 제작 도구로서 인공지능 기술을 이용한 영화 시각효과 제작 사례에 대한 분석을 통해서 향후 인공지능 기술이 영화 산업을 어떻게 바꿔놓을지 예측하고 시각효과 기술로서 인공지능의 산업적 가능성을 조망해 보고자 한다.

실내계획이론으로서의 유형학적 접근에 관한 연구 (A Study on Typological Approach for Interior Design Planning)

  • 한경희;이선민
    • 한국실내디자인학회논문집
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    • 제16호
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    • pp.153-160
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    • 1998
  • The past and present time are consistent thinking process system which composed of single concept not separated concept. It's common concept for interior designer to how to realize the thinking process system in actual present day. So this paper was focused on purpose of establishing for procedural process theory by approaching typological process system in interior design process. Interior design being composed of typological thinking process system has been headed as a critical issue to how to transplant well between the design and typological objects. Also we have to be needed to know for the process of visual expression and verbal ability to be able to extract the designer's elements from it. Through the process of visual expression and verbal ability to be able to extract the designer's elements from it. Through the process of visual transformation and analysis we have to extract concepts with united design objects. From these process it should be followed adequate adjudgment on the extracted fragments' assembly and dissociation methods through physical limitation of elements functionality and feasibility's measurements. Therefore from the morphological designed results reflected to typological concepts finished material detail and texture we should be able to take the integrated thinking process system. Lastly interior designer should be able to check whether it was best choice from the consistent design feedback process to ask whether it contains the conceptual design process and new typological objects without non-conformity between past and present days in interior space. Now we should be asked for development of practical design process to be able to realize above assumptions called "Development and Suceeding of Cultural Value System'. Additionally, we have to continue to develop for our true meaning of interior design process, not repetition of past's imitation.tion.

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