• Title, Summary, Keyword: Photogrammetry

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Current status and application of Photogrammetry (사진측정기의 동향 및 응용사례)

  • Choi, Jung-Su;Park, Eung-Sik;Kim, Hyung-Wan;Yoon, Yong-Sik
    • Current Industrial and Technological Trends in Aerospace
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    • v.6 no.2
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    • pp.80-89
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    • 2008
  • Photogrammetry is a non-direct 3-dimensional coordinate measurement technique using 2-dimensional photographic images. For reconstruction 3-dimensional data from the 2-dimensional photos, photogrammetry uses the fundamental principle of triangulation. Digital photogrammetry solve for the camera location and coordinates simultaneously through the mapping, scaling and bundle processing in software processing. In this paper, several applications for photogrammetry measurement are introduced, such as 'photogrammetric measurement of the gravity deformation of a cassegrain type antenna', 'analysis of photogrammetry data from ISIM mockup', 'underwater photogrammetric verification of nuclear fuel assemblies', 'spacecraft optical bench measurement' and 'spacecraft ground support equipment measurement'.

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Profile Design and Implementation of Aerial Photogrammetry WPS for Standard GIS Web Service (With Emphasis on Affine Transformation and Resection) (표준 GIS 웹 서비스를 위한 항공사진측량 WPS의 프로파일 설계 및 구현 (부등각사상변환, 후방교회법 중심으로))

  • Kim, Byung-Jo;Yom, Jae-Hong;Kyung, Min-Ju
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.28 no.3
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    • pp.337-345
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    • 2010
  • In general, Digital Photogrammetry is based on independent workstation system, which is costly and has complex process. In this research, a new approach method regarding Digital Photogrammetry procedure is suggested using Web Processing Service, which is a GIS standard proposed by Open Geospatial Consortium. For the experiment, many Generic Processes were defined through WPS profiling procedure which defines standard unit for Photogrammetry, and with the defined process each server and client S/W module was implemented based on WPS standards. In this paper, many users can be expected to share and reuse unit process in WPS server through the web.

Analysis of Three Dimensional Position Using Unit Models in Aerial Photogrammetry (단위 모델을 이용한 항공 사진의 3차원 위치 해석)

  • 강인준;유복모
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.4 no.1
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    • pp.49-57
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    • 1986
  • Block adjustment procedures are usually classified into three groups according to the smallest units ; the bundle, the model, or the strip. In this paper, three dimensional analysis using a unit model in aerial photogrammetry is studied, and error distibutions are anayzed concerning the control patterns.

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DEM generation of rock slope using laser scanning and digital stereo photogrammetry

  • Jeong Changyub;Park Hyong-Dong
    • 한국지구물리탐사학회:학술대회논문집
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    • pp.526-528
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    • 2003
  • There are some reports which are about measuring the discontinuity from 3D model of rock surface. To generate 3D model is mainly based on remote sensing technique like laser scanning and digital stereo photogrammetry. It is obtained the DEM of the rock slope using above techniques in this study, and examined a suitability and improvement of the photogrammetry for the rock slope by overlap the DEM. It seems that accuracy of DEM generated by photogrammetry technique is influenced by the geometry of rock and type of joint.

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Aircraft Deformation Measurement using Industrial Photogrammetry

  • Lee, Jae-Kee;Park, Un-Yong;Kang, Tae-Suk
    • 한국지형공간정보학회:학술대회논문집
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    • pp.51-59
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    • 2005
  • With industrial development, industrial products became more refined and upscale, resulting in increased necessity for manufacturers to come up with a method to check whether products have been produced to meet the needs of the customer. For thisreason, attention was drawn to industrial photogrammetry to obtain data rapidly without contacting the target object. In this study, the experiment has been conducted with the O-2A aircraft to determine the applicability of industrial photogrammetry.

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Evaluation of the Optimum Interpolation for Creating Hydraulic Model from Close Range Digital Photogrammetry (근접수치사진측량으로 수리모형해석에 적용 시 최적보간법 평가)

  • Choi Hyun
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.23 no.3
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    • pp.251-260
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    • 2005
  • The Development of CCD has contributed to great advancement in mapping technology with giving benefits to research community of photogrammetry. The purpose of this paper is to find the best selection of interpolation method for creating a terrain model form close range digital photogrammetry. T-test as a kind of statistical analysis was conducted to analyze the similarity of hydraulic model with close range digital photogrammetry and trigonometric leveling. Also, many interpolation methods such as inverse distance, kriging, nearest neighbor and TIN about the hydraulic model interpolation were conducted to compare the results for computer to display actual terrain an optimum interpolation of the digital elevation model form close range digital photogrammetry. The results revealed that kriging and TIN interpolation were efficient methods to judge the hazard interpolation law by analyzing geometric similarity of hydraulic model against hydraulic model application.

The Analysis of Deformation of Traffic Accident Vehicle Using Digital Imagery (수치영상을 이용한 교통사고차량 변형해석(Oral))

  • 이종출;강인준;차성렬;김진수
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • pp.135-138
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    • 2003
  • In this study, digital photogrammetry is made use of precision surveying of deformation parts that occurred in the traffic accident. So, deformation of the traffic accident, an essential basis in the traffic accident analysis, was analysed quantitatively by digital photogrammetry. If the study continue to build the basis of data, renew it, and consider the vehicle rigidity, a property of dynamics motion according to a various kind of cars, conditions of an accident, these deformation analysis will be able to not only decide the speed just before the collision, but also reappear the traffic accident and carry out an analysis more scientifically and effectively.

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Distinct Point Detection : Forstner Interest Operator

  • Cho, Woo-Sug
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.13 no.2
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    • pp.299-307
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    • 1995
  • The extraction of distinct points such as corner points and circular features is a basic procedure in digital photogrammetry and computer vision. This paper describes the extraction of image features from the raw images (gray value images), especially Forstner interest corner points. The mathematical model of the Forstner interest operator as well as the behavior in the presence of noise are investigated. Experiments with real images prove the feasibility of the Forstner interest operator in the field of Digital Photogrammetry.

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GPS/INS AT(Aerial Triangulation) Evaluation According to GPS Processing Time (GPS 위성신호의 처리시간에 따른 GPS/INS 사진기준점측량의 정확도)

  • Lee Seung-Huhn;Wie Gwang-Jae;Kim Seung-Young;Lee Jae-Won
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • pp.151-158
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    • 2006
  • As GPS 'selective availability' was turned off in 2000, GPS related fields and markets are explosively extended. In mapping area, GPS/INS aided photogrammetry proved it is much cost and time effective method keeping enough accuracy as compared with traditional photogrammetry works. The advantage of GPS/INS integration is interdependence. Even if GPS signal was blocked in some time, the position accuracy is not affected. In this study, various GPS signal time gap was used in GPS/INS AT process. Field surveyed ground points were used in accuracy check with GPS/INS AT check points. And the result showed enough accuracy of photogrammetry work rule of NGII. y.

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The Analysis of 3 Dimensional hydraulic experiment model (근접수치사진측량을 이용한 3차원 수리모형의 분석)

  • 최현;홍순헌;김민화;강인준
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • pp.137-142
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    • 2004
  • Recently. the number of the use of Digital Photogrammetry is increasing, and photogrammetry instruments are developing rapidly and the pression is improving continuously. In this study, using the Rollei d7 metric that is a measurement digital camera which has capacity of keeping numerial value by itself and easy carrying, we analyze the 3 dimensional hydraulic experiment model. First, we calculated RMSE by carrying out bundle adjustment. Second, we try to find a effective 3D DEM with the Kriging Interpolation, Third make a comparative study the DEM of the Triangulation with the DEM of the close-range digital photogrammetry.

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