• Title, Summary, Keyword: Photograph

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Utilization Methods & Expressive Characteristics of Shadows in Fashion Photograph (패션 사진에 나타난 그림자의 활용 방식 및 표현 특성)

  • Lee, Na Hyun;Chun, Jae Hoon
    • Journal of the Korean Society of Costume
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    • v.64 no.7
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    • pp.82-96
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    • 2014
  • This study views the shadows cast by the light and a subject provides new interpretations rather than it simply being an additive product. Particularly in fashion photograph, light and shadows are often used as tools to convey meaning. Accordingly, this study aims to classify the utilization of the shadow created by light and deriving its expressive characteristics in fashion photograph. To achieve these research aims, literature and case studies were conducted. The results are as follows. First, the shadows were mainly focused on a subject. Secondly, shadows caused by lighting is casted directly into the inside of the main subject in a frame takes a role of omission or emphasis. Third, shadows caused by a second unseen object outside the frame are utilized with the main subject in the frame. Based on these results above, spatial third dimensionality, optical illusion and accentuation were derived as expressive characteristics of the shadow in fashion photograph. As such, in fashion photograph, shadow is an important element for photographers. The variability of the shadow makes it possible for creative changes as its amount, angle and direction can be altered by adjusting the light in accordance with the intention of the artist. Therefore, its utilization methods will be diversified hereafter. Accordingly, it is required to recognize that shadow may be recreated as an independent object in fashion photograph.

Cryptography System for Concealment of Photograph Data in Unmanned Aerial Vehicles (무인항공기의 촬영 정보 은닉을 위한 암호 시스템)

  • Lee, Jong-Kwan
    • Journal of Security Engineering
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    • v.15 no.5
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    • pp.309-318
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    • 2018
  • In this paper, I propose a cryptography system to conceal photograph data captured by an unmanned aerial vehicles (UAV), even though the enemy takes the UAV that fallen in an accident or the data communications between the UAV and the ground control system (GCS) are exposed to the enemy. The photograph data should be concealed because it could expose the reconnaissance and operational intentions if leaked to the enemy. The proposed system encrypts each photograph data with the hash value of the photograph data. The hash value is encrypted with public key of the GCS and added to the header part of the photograph data. It is impossible to decrypt the encrypted photograph data without private key of the GCS. I analyze the security of the proposed system under two cases; 1) the enemy takes the UAV and 2) the signal between UAV and GCS is exposed to the enemy. I verified that the proposed system efficiently conceals the photograph data.

A Study of Make Inundation Map Using Satellite Photograph at Urban River (위성사진을 이용한 도시하천 홍수범람도 작성에 관한 연구)

  • Park, Ki-Bum;Kim, Sung-Won
    • Journal of Environmental Science International
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    • v.20 no.2
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    • pp.199-205
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    • 2011
  • This study used to the satellite photograph and drew up a flood inundation map. To past used digital map and showed reflect the inundation map and change of the city was difficult. The acquisition of the satellite photograph is easy from internet Site of Korea and is updated quickly. So, used the satellite photograph from flood inundation drawing up of existing and reflected the change of the city. Drawing up method of the inundation map in compliance with the research which sees the reflection of the land use which is actual is possible. Results of HEC-RAS with depth and an inundation location to be show easily. But there is to a combination method of the satellite photographs and GIS data and more objective and the subject the development of the technique which has reached fixed quantity must be researched continuously judges.

A Study on the Image Perception of Men's Casual Wear Using Photograph and Computer Simulation Picture (실물사진과 컴퓨터그림에 의한 남성 캐주얼웨어 이미지 지각 연구)

  • Kang, Seung-Hee;Lee, Myoung-Hee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.33 no.1
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    • pp.1-10
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    • 2009
  • The purpose of this study was to investigate the effects of the types and the colors of men's casual wear, hairstyles, and the methods of stimulus manufacture on men's image perception. The subjects were 360 women from the metropolitan area of Seoul. The clothing types used for the study were a sweater and a jumper(casual jacket) with jean pants. The clothing colors were beige, indigo, and red. Two hairstyles, the short and the medium length hairs, were compared. Two types of stimuli, the photograph and the computer simulation picture, were used. The results of the factor analysis disclosed five dimensions on men's image: neatness, individuality, ability, activity, and sociability. In general, the photograph stimuli were evaluated more positively in activity, individuality, and sociability than the picture stimuli. The sweaters were perceived higher in ability, activity, and sociability than the jumpers. The Indigo color was evaluated as neat. The medium length hairstyles were perceived as neat and the short hairstyles were perceived as sociable. The jumpers were evaluated lower in individuality in the picture stimuli than in the photograph stimuli. The beige and indigo colors were evaluated to be neater in the picture stimuli than in the photograph. When using the picture stimuli, the men's image wearing the sweaters with the medium length hairstyles were evaluated lower in individuality. When using the photograph stimuli, the men's image wearing the sweater with the short hairstyles were evaluated higher in activity. Men's image wearing the indigo jumper and the beige sweater with medium length hairs were evaluated as high in neatness.

Generation of High Quality Geospatial Information Using Computer Vision Analysis of Line Type Digital Aerial Photogrammetry Camera Imagery (Line Type 디지털 항공사진측량 카메라 영상의 컴퓨터비전 해석을 통한 고품질 공간정보 생성)

  • LEE, Hyun-Jik
    • Journal of the Korean Association of Geographic Information Studies
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    • v.23 no.1
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    • pp.41-50
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    • 2020
  • The National Geographic Information Institute of Korea takes digital aerial photograph images every two years to make and modify/renew the digital map. The cameras for aerial photogrammetry to capture these digital aerial photographs are divided into frame types and line types. Computer vision analysis of aerial photograph images was only possible for frame type. Thus, in this study, Line type aerial photograph images was intended to generate geospatial information through computer vision analysis, and forest geospatial information was created as a method for the utilization of aerial picture images. As a result, geospatial information generated by computer vision analysis of line type aerial photograph images showed that RMSE of horizontal and vertical position errors was less than quadruple that of GSD. Forest geospatial information was generated using geospatial information generated by computer vision analysis. It was confirmed that extraction of the crown of tree and calculation of tree height are possible. Through this study, it is expected that utilization of aerial photograph images will be improved.

The Significance of 'Photolanguage' in the Digital Era: Focused on Advertising Photographs by Yong-ho KIM (디지털 시대 '포토랭귀지'의 의미: 김용호 광고 사진을 중심으로)

  • Kim, Ji-Young
    • The Journal of the Korea Contents Association
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    • v.15 no.1
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    • pp.64-73
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    • 2015
  • Describing the filmography of Yong-ho KIM simply in a few sentences is considered nearly impossible. For the last 20 years and longer, KIM has been building up his career energetically as he never lets himself obsessed with any particular boundaries or areas but work on everything from paper advertisements to art galleries, advertising photographs and pure photographs. The Photolanguage personally mentioned by Yong-ho KIM himself is to visualize this imaginary story in a form of photograph, which one would come up with before shooting. When it comes to the advertising photographs, since they are used basically to sell products, they are considered rather temporary, and in addition, they photograph the products mostly under these bright lights with colorful backgrounds behind. However, Yong-ho KIM was recognized for presenting very much different work as he went even beyond these old stereotypes of the advertising photographs. The advertising photographs processed by KIM do more than merely introducing details or functions of some products, but they deliver these values and cultures that consumers can enjoy and gain through these original stories about the products. Of several pieces of KIM's work, this advertisement on Hyundai Card named was invited to an exhibition by a private gallery after the work was exposed through various media. The work was even purchased, and that was something that had not happened before in the history of the relevant field. When a photograph is purchased, it makes the photograph recognized for its value to be possessed, and when a photograph is displayed, it, again, makes the photograph win recognition as an art work. This thesis discusses the Photolanguage found in the works of Yong-ho KIM, one of the most well-known advertising photographers in South Korea. The research inquiries that have been analyzed in the body of the thesis, therefore, are the photographs and language in the digital era, the story-telling advertisements and these works by Yong-ho KIM.

A Study on the Photograph Management at the University Archives - The Case of the Pusan National University Library - (대학 아카이브즈의 사진자료 관리에 관한 연구 - 부산대학교 도서관의 사례를 중심으로 -)

  • Kim, Junh-Nam
    • Journal of Korean Society of Archives and Records Management
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    • v.3 no.2
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    • pp.98-113
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    • 2003
  • In comparison with conventional types of documents, photographs present special problems in the management of any archives because of their physical properties and the nature and format of their informational content This paper is case study for the effective photographs management at the university archives. At first, sort out photographic images in the university publications, draw up work sheet by the bibliographic information of the photographic images and construct a bibliographic database based on the work sheet. Secondly, the photographic images is linked with bibliographic database. In result, users can confirm immediately photographic images on the screen by searching OPAC. This paper concludes with a problem and improvement of the photograph database at the university archives.

A study on the spray and flame by optically accessible D.I. diesel engine : analysis by Schlieren method and diffused background illumination method (가시용 직분식 디젤기관의 분무와 화염에 관한 연구)

  • 안수길;이덕보;라진홍
    • Journal of the Korean Society of Marine Engineering
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    • v.19 no.3
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    • pp.9-23
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    • 1995
  • To analyze the spray and flame in D.I. diesel engine, the visualizing methods by schlieren photograph and diffused background illumination photograph with high speed camera are applied to optically accessible D.I.diesel engine. Wcaporating spray, spray droplets and brightness flame are taken with high speed camera by visuallizing method in accordance with various suction air temperature and injection time. The spray and flame image on the film was analyzed by image analyzer. The optically accessible D.I. diesel engine had the similar pressure characteristic to the real D.I. diesel engine. Experimental results showed that shadow areas of the evaporating spray were extended at higher suction air temperature, spray droplets had a max. Penetration length and their penetrating patterns were dependent on the surrounding gas temperature, and flame size after ignition was largely governed by the evaporated fuel quantity at ignition point and by the surrounding gas condition due to piston motion.

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3D RECONSTRUCTION OF LANDSCAPE FEATURES USING LiDAR DATAAND DIGITAL AERIAL PHOTOGRAPH FOR 3D BASED VISIBILITY ANALYSIS

  • Song, Chul-Chul;Lee, Woo-Kyun;Jeong, Hoe-Seong;Lee, Kwan-Kyu
    • Proceedings of the KSRS Conference
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    • pp.548-551
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    • 2007
  • Among components of digital topographic maps used officially in Korea, only contours have 3D values except buildings and trees that are demanded in landscape planning. This study presented a series of processes for 3Dreconstructing landscape features such as terrain, buildings and standing trees using LiDAR (Light Detection And Ranging) data and aerial digital photo graphs. The 3D reconstructing processes contain 1) building terrain model, 2) delineating outline of landscape features, 3) extracting height values, and 4) shaping and coloring landscape features using aerial photograph and 3-D virtual data base. LiDAR data and aerial photograph was taken in November 2006 for $50km^{2}$ area in Sorak National Park located in eastern part of Korea. The average scanning density of LiDAR pulse was 1.32 points per square meter, and the aerial photograph with RGB bands has $0.35m{\times}0.35m$ spatial resolution. Using reconstructed 3D landscape features, visibility with the growing trees with time and at different viewpoints was analyzed. Visible area from viewpoint could be effectively estimated considering 3D information of landscape features. This process could be applied for landscape planning like building scale with the consideration of surrounding landscape features.

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A Demonstration Construction of Sewerage Underground Facilities Map Based on Aerial Photograph (항공사진 기반 하수 지하시설물도 시범구축)

  • Min, Kwan-Sik;Choi, Min-Ho
    • Spatial Information Research
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    • v.19 no.6
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    • pp.67-74
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    • 2011
  • This study attempts to establish sewerage underground facility map using aerial photograph with high readability and accessibility as an alternative of digital map and compilation cadastral map. A study on utility and consistency of established sewerage underground facility map in line with the current continuous cadastral map of underground facility was carried out. If underground facility map is established and utilized by converging digital image and compilation cadastral map, various spatial information analysis and systematic and integrated information utilization is available. The drawing of underground facility map using aerial photograph in this highly information-oriented society shall play a role in basic map for integrated control as an alternative of problems in the current drawing and designs created and managed by controlling institutions. In addition, the information of sewerage underground facility map using aerial photograph shall be used for establishing systematized urban planning and control.