• 제목/요약/키워드: digital photography

검색결과 158건 처리시간 0.027초

디지털 전환 시대의 AR기술 기반 판화 제작 연구 (Study on Printmaking Design Based on Augmented Reality Technology in Era of Digital Transformation)

  • 임지붕;김유진
    • 문화기술의 융합
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    • 제9권4호
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    • pp.161-170
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    • 2023
  • 본 연구에서는 전통 판화의 디지털 전환을 위해 전통 판화의 문화적 함의와 형식적 특징 등 판화 예술만이 가진 고유한 매체 특성을 지키는데 중점을 두고 전통 판화 제작에 증강현실 기술을 적용하는 방법을 제한하고 있다. 이를 위해 디지털 전환 시대에 전통 판화 예술과 증강현실 기술의 융합 의도를 이해할 수 있도록 증강현실 작품을 4가지 유형으로 구분하고 여러 나라의 AR 작품 사례를 분석하였다. 이를 통해 증강현실 기술과 전통 판화의 결합 방식과 디자인 방향을 결정하였다. 또한 저자의 작품 "봄, 여름, 가을, 겨울"을 기반으로 한 AR 판화 작품을 완성하여 증강현실 기술이 판화 발전에 충분한 역할을 할 수 있음을 입증하였다. 우리는 이 연구를 통해 AR 판화는 보다 확장된 스토리를 제공하여 몰입감 있는 판화 예술작품으로써의 가능성과 그 가치를 확인할 수 있었다.

IR Cut-Off Filter가 차단하지 못한 미량의 적외선이 디지털화상에 미치는 영향 분석 (The analysis of the Effect the Minute Quantities of Infrared Rays that Were not Filtered by IR Cut-Off Filter has on Digital Images)

  • 이용환;박세원;홍정의
    • 한국콘텐츠학회논문지
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    • 제11권5호
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    • pp.205-215
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    • 2011
  • 분광특성의 차이로 필름은 자외선에 민감한데 반해 디지털 카메라의 센서는 적외선에 굉장히 민감하다. 이에 따라 CCD 또는 CMOS를 사용하는 모든 디지털 카메라에는 IR Cut-Off Filter가 센서전면에 장착되어 있다. 이상적으로 100% 적외선을 차단하여야 하지만 실험 결과 완전히 적외선을 차단하지 못하고 있었으며, 각 카메라마다 적외선 투과량 또한 달랐다. 따라서 본 연구는 디지털 카메라에 장착되어 있는 IR Cut-Off Filter의 기계적 특성에 의해 투과되는 미량의 적외선이 디지털 화상이미지에 끼치는 영향을 분석하는 데 그 목적이 있다. UV필터를 장착한 상태(적외선 투과상태)와 UV-IR필터를 장착한 상태(적외선미투과상태)를 비교분석한 결과, 잡음(Noise)과 색 재현력 평가에서는 그 차이가 미세하거나 거의 동등한 수준이지만, 동적 폭(Dynamic Range)과 해상도에는 IR Cut-Off Filter를 통해 투과되는 미량의 적외선이 어느 정도 영향이 있음을 확인할 수 있었다.

미술교육에 있어서 시각적 미디어를 통한 조형교육에 관한 연구 (Visual Media Education in Visual Arts Education)

  • 박지숙
    • 조형예술학연구
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    • 제7권
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    • pp.64-104
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    • 2005
  • Visual media transmits image and information reproduced in large quantities, such as a photography, film, television, video, advertisement, or computer image. Correspondence to the students' reception and recognition of culture in the future. arrangements for the field of studies of visual culture. 'Visual Culture' implies cultural phenomena of visual images via visual media, which includes not only the categories of traditional arts like a painting, sculpture, print, or design, but the performance arts including a fashion show or parade of carnival, and the mass and electronic media like a photography, film, television, video, advertisement, cartoon, animation, or computer image. In the world of visual media, Image' functions as an essential medium of communication. Therefore, people call the culture of today fra of Image Culture', which has been converted from an alphabet convergence era to an image convergence one. Image, via visual media, has become a dominant means for communication in large part of human life, so we can designate an Image' as a typical aspect of visual culture today. Image, as an essential medium of communication, plays an important role in contemporary society. The one way is the conversion of analogue image like an actual picture, photograph, or film into digital one through the digitalization of digital camera or scanner as 'an analogue/digital commutator'. The other is a way of process with a computer drawing, or modeling of objects. It is appropriate to the production of pictorial and surreal images. Digital images, produced by the other, can be divided into the form of Pixel' and form of Vector'. Vector is a line linking the point of departure to the point of end, which organizes informations. Computer stores each line's standard location and correlative locations to one another Digital image shows for more 'Perfectness' than any other visual media. Digital image has been evolving in the diverse aspects, such as a production of geometrical or organic image compositing, interactive art, multimedia art, or web art, which has been applied a computer as an extended trot of painting. Someone often interprets digitalized copy with endless reproduction of original even as an extension of a print. Visual af is no longer a simple activity of representation by a painter or sculptor, but now is intimately associated with a matter of application of media. There is some problem in images via visual media. First, the image via media doesn't reflect a reality as it is, but reflects an artificial manipulated world, that is, a virtual reality. Second, the introduction of digital effect and the development of image processing technology have enhanced a spectacle of destructive and violent scenes. Third, a child intends to recognize the interactive images of computer game and virtual reality as a reality, or truth. Education needs not only to point out an ill effect of mass media and prevent the younger generation from being damaged by it, but also to offer a knowledge and know-how to cope actively with social, cultural circumstances. Visual media education is one of these essential methods for the contemporary and future human being in the overflowing of image informations. The fosterage of 'Visual Literacy' can be considered as a very purpose of visual media education. This is a way to lead an individual to the discerning, active consumer and producer of visual media in life as far as possible. The elements of 'Visual Literacy' can be divided into a faculty of recognition related to the visual media, a faculty of critical reception, a faculty of appropriate application, a faculty of active work and a faculty of creative modeling, which are promoted at the same time by the education of 'visual literacy'. In conclusion, the education of 'Visual Literacy' guides students to comprehend and discriminate the visual image media carefully, or receive them critically, apply them properly, or produce them creatively and voluntarily. Moreover, it leads to an artistic activity by means of new media. This education can be approached and enhanced by the connection and integration with real life. Visual arts and education of them play an important role in the digital era depended on visual communications via image information. Visual me야a of day functions as an essential element both in daily life and in arts. Students can soundly understand visual phenomena of today by means of visual media, and apply it as an expression tool of life culture as well. A new recognition and valuation visual image and media education is required to cultivate the capability of active, upright dealing with the changes of history of civilization. 1) Visual media education helps to cultivate a sensibility for images, which reacts to and deals with the circumstances. 2) It helps students to comprehend the contemporary arts and culture via new media. 3) It supplies a chance of students' experiencing a visual modeling by means of new media. 4) There are educational opportunities of images with temporality and spaciality, and therefore a discerning person becomes to increase. 5) The modeling activity via new media leads students to be continuously interested in the school and production of plastic arts. 6) It raises the ability of visual communications dealing with image information society. 7) An education of digital image is significant in respect of cultivation of man of talent for the future society of image information as well. To correspond to the changing and developing social, cultural circumstances, and the form and recognition of students' reception of them, visual arts education must arrange the field of studying on a new visual culture. Besides, a program needs to be developed, which is in more systematic and active level in relation to visual media education. Educational contents should be extended to the media for visual images, that is, photography, film, television, video, computer graphic, animation, music video, computer game and multimedia. Every media must be separately approached, because they maintain the modes and peculiarities of their own according to the conveyance form of message. The concrete and systematic method of teaching and the quality of education must be researched and developed, centering around the development of a course of study. Teacher's foundational capability of teaching should be cultivated for the visual media education. In this case, it must be paid attention to the fact that a technological level of media is considered as a secondary. Because school education doesn't intend to train expert and skillful producers, but intends to lay stress on the essential aesthetic one with visual media under the social and cultural context, in respect of a consumer including a man of culture.

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전통적 사진 기법에 기반한 컬러 영상의 흑백 변환 (Color2Gray using Conventional Approaches in Black-and-White Photography)

  • 장혁수;최민규
    • 한국컴퓨터그래픽스학회논문지
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    • 제14권3호
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    • pp.1-9
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    • 2008
  • 본 논문에서는 전통적인 사진 기법에 기반하여 대비가 뚜렷한 흑백 영상을 얻기 위한 새로운 방법을 제안한다. 사진가들은 대비가 뚜렷한 흑백 사진을 얻기 위해 촬영 시 대비 필터(consrast filter)를 사용하여 특정 색이 부각된 흑백 필름을 얻고, 인화 시 버닝(burning)과 닷징(dodging) 같이 국지적 노출을 조절하는 기법을 사용하였다. 본 논문에서는 이러한 흑백 사진 기법에 대한 디지털 버전을 제안하고 이에 기반하여 영상의 시각적 특징을 최대한 유지하는 최적화 기법을 제안한다. 또한, 인접 픽셀간의 유사 가중치를 이용하여 경계를 감안한 연속적인 국지적 노출을 얻게 한다. 제안한 기법은 GPU상에서 구현 가능하며 메가픽셀 영상에 대해서도 시각적 특징을 유지하는 흑백 영상을 대화적 시간 안에 획득할 수 있다.

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PARALLAX ADJUSTMENT FOR REALISTIC 3D STEREO VIEWING OF A SINGLE REMOTE SENSING IMAGE

  • Kim, Hye-Jin;Choi, Jae-Wan;Chang, An-Jin;Yu, Ki-Yun
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2007년도 Proceedings of ISRS 2007
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    • pp.452-455
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    • 2007
  • 3D stereoscopic viewing of large scale imagery, such as aerial photography and satellite images, needs different parallaxes relative to the display scale. For example, when a viewer sees a stereoscopic image of aerial photography, the optimal parallax of its zoom-in image should be smaller than that of its zoom-out. Therefore, relative parallax adjustment according to the display scale is required. Merely adjusting the spacing between stereo images is not appropriate because the depths of the whole image are either exaggerated or reduced entirely. This paper focuses on the improving stereoscopic viewing with a single remote sensing image and a digital surface model (DSM). We present the parallax adjustment technique to maximize the 3D realistic effect and the visual comfort. For remote sensing data, DSM height value can be regarded as disparity. There are two possible kinds of methods to adjust the relative parallax with a single image performance. One is the DSM compression technique: the other is an adjustment of the distance between the original image and its stereo-mate. In our approach, we carried out a test to evaluate the optimal distance between a single remote sensing image and its stereo-mate, relative to the viewing scale. Several synthetic stereo-mates according to certain viewing scale were created using a parallel projection model and their anaglyphs were estimated visually. The occlusion of the synthetic stereo-mate was restored by the inpainting method using the fields of experts (FoE) model. With the experiments using QuickBird imagery, we could obtain stereoscopic images with optimized parallax at varied display scales.

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척추측만증 평가 척도에 관한 문헌 고찰: 비방사선 방법을 중심으로 (Review Study on the Measurement Tools of Scoliosis: Mainly on Non-radiological Methods)

  • 김동주;최성경;조효림;하유빈;최성환;박서현;이승덕;금동호;성원석;김은정
    • 대한한의학회지
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    • 제42권1호
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    • pp.75-98
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    • 2021
  • Objectives: The purpose of this study is to investigate the characteristics, validity, and reliability of non-radiological assessment tools of scoliosis that have been studied so far. Methods: Electronic databases including Pubmed, Cochrane Library, CNKI, Science On, RISS, OASIS were searched by keywords including 'scoliosis assessment', 'scoliosis screening', 'physical examination', 'functional measurement', 'photography', and 'smartphone'. Results: 32 articles using radiation-free assessments were identified from 1,011 records. The mostly used non-radiological methods were Surface topography, Scoliometer, Ultrasound, Digital Infrared Thermal Imaging, and Photography. The other methods were Gait analysis, 3D depth sensor imaging, and Low intensity electromagnetic scan. Conclusions: It was found that non-radiological assessment tools might reduce the number of radiographs taken in scoliosis patients. To increase the reliability and validity, further research on the measurement tools of scoliosis will be needed.

건축물 사용승인 제도의 현장조사 자동화를 위한 UAV활용방안 연구 (A Study on Utilization of Unmanned Aerial Vehicle for Automated Inspection for Building Occupancy Authorization)

  • 이승현;류정림;추승연
    • 한국CDE학회논문집
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    • 제22권1호
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    • pp.44-58
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    • 2017
  • The inspection for building occupancy authorization has lacked objectivity due to manual measurement methods. This is why connivance of the illegal buildings has been rampant, which has led to so many incidents. Consequently, this law has lost its intent to protect people's lives and property. In this study, for the purpose of improvement of this law, the research was conducted by the utilization of unmanned aerial vehicle for automated inspection for building occupancy authorization. Theoretical considerations about building occupancy authorization and the trend of UAV technology were accomplished. Secondly, a series of reverse engineering was conducted including digital photography, network RTK-VRS surveying and post-processing data. Thirdly, the resultant spatial information was used for building occupancy inspection authorization in a BIM platform and the effectiveness and applicability of UAV-based inspection was analyzed. As a result, methodology for UAV-based automated building occupancy inspection authorization was derived. And it was found that eleven items would be possible to be automated among thirty total items for building occupancy authorization. Also it was found that UAV-based automated inspection could be valid in inspecting building occupancy authorization due to authentic accuracy, effectiveness and applicability with government policy.

사진스캐닝 기술에 의한 매장문화재 기록방법에 대한 연구 (The Study on Recording Method for Buried Cultural Property Using Photo Scanning Technique)

  • 구자봉
    • 디지털콘텐츠학회 논문지
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    • 제16권5호
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    • pp.835-847
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    • 2015
  • 사진스캐닝 기술은 여러 장의 사진정보를 조합하여 대상물을 3차원으로 재구성하는 기술로 3D 스캐너처럼 포인트 클라우드를 생성하고 폴리곤 모델을 생성할 수 있다. 생성된 데이터로는 매장문화재의 3차원 형상뿐만 아니라 2차원 실측에 필요한 평면과 단면 형상정보를 얻을 수 있다. 야외조사 현장에서 이루어지는 매장문화재의 기록은 많은 시간이 필요한데 사진스캐닝 기술은 별도의 장비와 인력이 이중으로 투입될 필요가 없이 조사 직후 유구 정리가 가장 양호한 상태에서 바로 작업을 진행할 수 있다. 또한 사진촬영을 통해 획득된 이미지를 활용하여 3차원 데이터를 구축할 수 있어 경제적인 부담이 적으면서도, 최적의 상태에서 빠르고 간편하게 3차원의 입체형상 정보를 기록화 할 수 있는 기록방법이라고 할 수 있다.

딥 러닝 기반의 악성흑색종 분류를 위한 컴퓨터 보조진단 알고리즘 (A Computer Aided Diagnosis Algorithm for Classification of Malignant Melanoma based on Deep Learning)

  • 임상헌;이명숙
    • 디지털산업정보학회논문지
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    • 제14권4호
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    • pp.69-77
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    • 2018
  • The malignant melanoma accounts for about 1 to 3% of the total malignant tumor in the West, especially in the US, it is a disease that causes more than 9,000 deaths each year. Generally, skin lesions are difficult to detect the features through photography. In this paper, we propose a computer-aided diagnosis algorithm based on deep learning for classification of malignant melanoma and benign skin tumor in RGB channel skin images. The proposed deep learning model configures the tumor lesion segmentation model and a classification model of malignant melanoma. First, U-Net was used to segment a skin lesion area in the dermoscopic image. We could implement algorithms to classify malignant melanoma and benign tumor using skin lesion image and results of expert's labeling in ResNet. The U-Net model obtained a dice similarity coefficient of 83.45% compared with results of expert's labeling. The classification accuracy of malignant melanoma obtained the 83.06%. As the result, it is expected that the proposed artificial intelligence algorithm will utilize as a computer-aided diagnosis algorithm and help to detect malignant melanoma at an early stage.

360VR을 활용한 영화촬영 환경을 위한 제작 효율성 연구 (A Study on the Production Efficiency of Movie Filming Environment Using 360° VR)

  • 이영숙;김정환
    • 한국멀티미디어학회논문지
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    • 제19권12호
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    • pp.2036-2043
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    • 2016
  • The $360^{\circ}$ Virtual Reality (VR) live-action movies are filmed by attaching multiple cameras to a rig to shoot the images omni-directionally. Especially, for a live-action film that requires a variety of scenes, the director of photography and his staff usually have to operate the rigged cameras directly all around the scene and edit the footage during the post-production stage so that the entire process can incur much time and high cost. However, it will also be possible to acquire high-quality omni-directional images with fewer staff if the camera rig(s) can be controlled remotely to allow more flexible camera walking. Thus, a $360^{\circ}$ VR filming system with remote-controlled camera rig has been proposed in this study. The movie producers will be able to produce the movies that provide greater immersion with this system.