• 제목/요약/키워드: digital image analysis

검색결과 1,494건 처리시간 0.042초

디지털 이미지의 조형적 특성 연구: NFT 예술작품을 중심으로 (A Study on Formative Characteristics of Digital Images: Focused on NFT Arts)

  • 김혜성
    • Journal of Information Technology Applications and Management
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    • 제29권2호
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    • pp.1-15
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    • 2022
  • Image has more power in the 21st century than ever before. With the advance in technology and media, image is either made or received more easily and promptly using digital technology. Because of that, it has been hard for digital images to gain value as a work of art. But after NFT technology was developed and then applied to digital images, we have come to distinguish the original from the copy of it. People are trying various ways to allow digital images to be acknowledged as art, and changing the nature of digital images that makes new paradigms in the history of art. Through NFT artworks rising as a new style, this paper analyzed and investigated the new properties and changing characteristics of digital images in order to anticipate the characteristics of artworks that the public produces, enjoys, and consumes. This study is grounded on experimental analysis methods, and this author expects that it can contribute to figuring out which kinds of visual culture and artworks digital image is influencing currently from various perspectives.

A Case Study on Morten Lasskogen's Cloud Series - Based on 3ds Max and Unreal Engine Technology -

  • JinXuan Zhao;Xinyi Shan;Jeanhun Chung
    • International journal of advanced smart convergence
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    • 제12권2호
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    • pp.96-101
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    • 2023
  • Digital art creation has become an indispensable part of today's society, but traditional digital art production methods have been difficult to meet the growing creative needs of artists. Therefore, this study takes the cloud series works of artist Morten Lasskogen as an example and explores the application value of 3D Max and Unreal Engine in digital art created by analyzing the lighting effects in the works of art. This research aims to form reference materials through actual case analysis and provide artists with more efficient ideas for digital art creation.

수치지도의 수정 및 갱신을 위한 고해상도 위성영상의 적용 가능성 평가 (Estimating the Application Possibility of High-resolution Satellite Image for Update and Revision of Digital Map)

  • 강준묵;이철희;이형석
    • 한국측량학회지
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    • 제20권3호
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    • pp.313-321
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    • 2002
  • 고해상도 위성영상의 공급이 현실화됨에 따라 위성영상을 기반으로 한 수치지형도나 주제도의 신규제작 및 갱신에 많은 관심이 모이고 있다. 본 연구는 아이코노스 위성영상을 이용하여 기존의 축척 l/5,000 및 l/25,000수치지도의 수정 및 갱신 가능성을 제시하고자 하였다. 아이코노스 단영상에서 기존 수치지도상의 기준점을 활용하여 기하보정을 수행하였으며, 기존 수치지도의 3차원 등고선자료와 표고성과에 의해 수치표고모형을 추출하여 정사영상을 생성하였다. 정사보정된 위성영상과 기존 수치지도를 중첩하여 변화된 지형지물들을 스크린 디지타이징 방법으로 수정하였고, 위치정확도 분석을 위해 변하지 않은 지역의 지형지물들을 위성영상위에 직접 작도하여 비교하였다. 그 결과, 평면위치오차를 $\pm$3.35m의 평균제곱근오차로 산출할 수 있었으므로 축척 1/10,000 이하의 수치지도 갱신에는 충분히 그 활용이 가능한 것으로 판단되며, 입체영상을 사용하고 지상기준점 측량을 병행한 갱신방법을 사용한다면 축척 l/5,000이상의 대축척 수치지도 갱신도 가능할 것이다.

Algorithm Development of a Visibility Monitoring Technique Using Digital Image Analysis

  • Pokhrel, Rajib;Lee, Hee-Kwan
    • Asian Journal of Atmospheric Environment
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    • 제5권1호
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    • pp.8-20
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    • 2011
  • Atmospheric visibility is one of the indicators used to evaluate the status of air quality. Based on a conceptual definition of visibility as the maximum distance at which the outline of the selected target can be recognized, an image analysis technique is introduced here and an algorithm is developed for visibility monitoring. Although there are various measurement techniques, ranging from bulk and precise instruments to naked eye observation techniques, each has their own limitations. In this study, a series of image analysis techniques were introduced and examined for in-situ application. An imaging system was built up using a digital camera and was installed on the study sites in Incheon and Seoul separately. Visual range was also monitored by using a dual technology visibility sensor in Incheon and transmissometer in Seoul simultaneously. The Sobel mask filter was applied to detect the edge lines of objects by extracting the high frequency from the digital image. The root mean square (RMS) index of variation among the pixels in the image was substantially correlated with the visual ranges in Incheon and Seoul with correlations of $R^2$=0.88 and $R^2$=0.71, respectively. The regression line equations between the visual range and the RMS index in Incheon and Seoul were VR=$2.36e^{0.46{\times}(RMS)}$ and VR=$3.18e^{0.15{\times}(RMS)}$, respectively. It was also confirmed that the fine particles ($PM_{2.5}$) have more impacts to the impairment of visibility than coarse particles.

디지털 화상처리를 이용한 유동장의 비접촉 3차원 고속류 계측법의 개발 (Developemet of noncontact velocity tracking algorithm for 3-dimensional high speed flows using digital image processing technique)

  • 도덕희
    • Journal of Advanced Marine Engineering and Technology
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    • 제23권2호
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    • pp.259-269
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    • 1999
  • A new algorithm for measuring 3-D velocity components of high speed flows were developed using a digital image processing technique. The measuring system consists of three CCD cameras an optical instrument called AOM a digital image grabber and a host computer. The images of mov-ing particles arranged spatially on a rotation plate are taken by two or three CCD cameras and are recorderd onto the image grabber or a video tape recoder. The three-dimensionl velocity com-ponents of the particles are automatically obtained by the developed algorithm In order to verify the validity of this technique three-dimensional velocity data sets obtained from a computer simu-lation of a backward facing step flow were used as test data for the algorithm. an uncertainty analysis associated with the present algorithm is systematically evaluated, The present technique is proved to be used as a tookl for the measurement of unsteady three-dimensional fluid flows.

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휴대폰의 CFA 패턴특성을 이용한 사진 위변조 탐지 (Automatic Detection of Forgery in Cell phone Images using Analysis of CFA Pattern Characteristics in Imaging Sensor)

  • 심재연;김성환
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2010년도 추계학술발표대회
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    • pp.1118-1121
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    • 2010
  • With the advent of cell phone digital cameras, and sophisticated photo editing software, digital images can be easily manipulated and altered. Although good forgeries may leave no visual clues of having been tampered with, they may, nevertheless, alter the underlying statistics of an image. Most digital camera equipped in cell phones employ a single image sensor in conjunction with a color filter array (CFA), and then interpolates the missing color samples to obtain a three channel color image. This interpolation introduces specific correlations which are likely to be destroyed when tampering with an image. We quantify the specific correlations introduced by CFA interpolation, and describe how these correlations, or lack thereof, can be automatically detected in any portion of an image. We show the efficacy of this approach in revealing traces of digital tampering in lossless and lossy compressed color images interpolated with several different CFA algorithms in test cell phones.

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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디지털 위성영상의 3차원 도시공간 시뮬레이션 적용기술연구 (A Study on the Application Technology of Three-dimensional Urban Geo-spatial Simulation using Digital Satellite Image)

  • 연상호
    • 한국콘텐츠학회논문지
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    • 제4권2호
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    • pp.7-12
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    • 2004
  • 다양한 도시의 형태를 입체적으로 조망해 볼 수 있도록 하기 위하여 입체 지형조감도를 작성하였고, 이를 시공간에서 동영상으로 보여주기 위하여 3차원 시뮬레이션을 실시할 수 있도록 하였다. 입체 조감도의 제작은 투시기법을 이용한 이미지 제작 기법을 이용하였으며, 그 기본 재료가 되는 영상들은 다음과 같이 준비하도록 하였다. 준비영상으로는 우리나라 아리랑 위성의 EOC(Electro optical Camera) 영상을 이용하였으며, 국토지리정보원에서 국가기본도로 제작한 1/5,000수치지도의 등고선으로부터 추출하여 임의로 오차가 보정된 DEM(Digital Elevation Model) 생성과 1/1,000 수치지도의 도로 레이어 벡터파일로 제작된 도로선을 분류하여 대상지의 3차원 영상 위에 중첩시켜 처리하는 것으로 하였다. 특히 이번 연구에 사용한 도심지역의 도로망 구성 데이터는 새주소 부여를 위해 제작된 1/1,000축척의 간선도로를 최대한 이용함으로서 새주소에서 사용하게 될 주소체계와의 연계성을 크게 염두에 두어 제작하도록 연구하였다.

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디지털 영상 확대를 위한 적응형 Pseudomedian 필터의 설계 및 성능 분석 (Design and Performance Analysis of Adaptive Pseudomedian Filter for Digital Image Enlargement)

  • 곽노윤;황병원
    • 한국정보처리학회논문지
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    • 제7권4호
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    • pp.1305-1315
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    • 2000
  • It is known that a digital image enlargement technique can increase the size of he image but the practical enhancement of resolution is trifle because the frequency bandwidth of the original image is basically limited. To solve this problem, this paper proposes the digital image enlargement technique which interpolates the interpolation points of horizontal and vertical direction by weighting according to the direction of edge information with the component of FOI(First Order Interpolation)and output of the pseudomedian filter for image enlargement and interpolates the interpolation points of diagonal direction by selectively transposing the direction of the subwindows of the pseudomedian filter according to the distribution of neighbored pixels thereto in the extended image. According to the proposed methods, the digital image enlargement which preserves the characteristic of the pseudomedian filter capable of keeping the reconstruction of edge information and reflects the advantage of FOI can be performed. Therefore, visual artifacts could be effectively suppressed, and most characteristics and shape of the original image can be reconstructed as well.

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화상분석기를 이용한 정도별 이형성증에 대한 연구 (The Study of Dysplasic Grades to Digital Image Analyzer)

  • 주경웅
    • 대한임상검사과학회지
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    • 제38권3호
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    • pp.203-207
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    • 2006
  • The purpose of this study was to develop discriminant analysis models for predicting cervical normal/dysplasia case diagnoses using cytometric features derived from the digital image analysis of cell monolayers. The database consisted of 19 cases diagnosed either as normal (n=5), moderate dysplasia (n=7), severe dysplasia (n=7) on monolayer preparations. We studied the nuclear and cytoplasmic characteristics of cells in the normal, moderate dysplasia and severe dysplasia on cervical samples. The morphometric parameters selected for the analysis were nuclear/cytoplasmic ratio and the nuclear variations measured by image analysis on normal and precancerous lesions of cervical smears; several shape factors; area; perimeter; maximal, minimal and equivalent circle diameters. The results showed that the dysplasia samples exhibited changes in both cellular and nuclear form and size but lacked substantial differences in the tumor grades. The coefficient of nuclear variation is as follows to normal cell $21.8{\pm}3.2%$, moderate dysplasia $33.5{\pm}6.1%$, severe dysplasia $27.7{\pm}5.8$ of cervical smears.

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