• Title/Summary/Keyword: Photogrammetry

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Effective Application of Digital Photogrammetry using Local Terrain Model (국부지형모형을 이용한 수치사진측량의 효율적 적용)

  • 박운용;김정희;문두열;정공운
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2003.10a
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    • pp.199-204
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    • 2003
  • Digital high resolution cameras are widely available, and are increasingly use in digital close-range photogrammetry. And photogrammetry instruments are developing rapidly and the precision is improving continuously, The building of 3D terrains of high precision are possible and the calculation of the areas or the earthwork volumes have high precision due to the development of the technique of the spatial information system using computer, In this study, using the digital camera which has capacity of keeping numerical value by itself and easy carrying, we analyze the positioning error according to various change of photographing condition. Also we t]v to find a effective method of acquiring basis data for 3D monitoring of high-accuracy in pixel degree through digital close-range photogrammetry with bundle adjustment for local terrain model generation and earthwork volume.

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A Study on 3D-Coordinate Extraction of Structure by Using The Digital Camera (디지털 카메라를 이용한 구조물의 3차원 좌표 추출에 관한 연구)

  • Kim, Kam-Lae;Kim, Hak-Joon;Park, Yong
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2003.10a
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    • pp.219-224
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    • 2003
  • Recently, the number of the use of Digital Photogrammetry is increasing, the Digital Photogrammetry is used for the acquisition of images, remote sensing and three dimension location. Especially, the three dimension location is more activated to use digital camera for the Digital Photogrammetry. The reason is that it is cheap and easy to use and also it has high confidence. Using non-metric digital camera not metric camera, in this research, to get images and apply the images to the Direct Liner Transformation which is one of the techniques in Digital Photogrammetry to get three dimensional location of a point. Ⅰ programmed the procedure with Visual C++ to get the position of points speedly and I tested possibility whether it can analyze the displacement and the existence of structure with measurement system which is structured by a inexpensive non-metric digital camera.

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The Generation of Accurate Digital Orthophoto by DTM Accuracy Improvement (DTM의 정확도 향상에 의한 정밀 수치정사사진 생성)

  • 박운용;이기부;정성모;이인수
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.16 no.2
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    • pp.243-250
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    • 1998
  • From early plane-table photogrammetry through the analog and analytical stages, photogrammetry has now reached the digital photogrammetry stage using the image stored at computers. Digital Photogrammetry using aerial photograph generates the DTM and digital orthophoto. Expecially, DTM is important for improving the accuracy of digital ortho photo. so Many experimental are required. In this study, therefore deals with the generation process of digital orthophotos using DTM with breakline and without breakline.

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Profile Design of Aerial Photogrammetry WPS for Standard GIS Web Service (표준 GIS 웹 서비스를 위한 항공사진측량 WPS의 Profile 설계)

  • Kim, Byung-Jo;Yom, Jae-Hong;Kyung, Min-Ju
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2010.04a
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    • pp.375-378
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    • 2010
  • Digital photogrammetry workstations are usually based on independent systems which are both expensive and complex. In this paper, through Web Processing Service, which is an Open Geospatial Consortium standard for GIS, is applied to suggest a new approach for processing photogrammetry tasks. WPS profiling is a procedure that defines generic unit process and then categorizes these processes for a specific task. The WPS profile for aerial photogrammetry was designed in this paper to help users to reuse the processes of the profile in different combinations for different tasks.

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Techniques of deformations measurement in Electric Power structure by using Close Range Photogrammetry (근거리사진측량을 이용한 전력구조물의 미소변위 측정기법)

  • 김감래;김명배
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.12 no.1
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    • pp.77-87
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    • 1994
  • One of the often espoused merits of close-range photogrammetry is the effectiveness of the method for measuring non-accessible objects of unusual and complex shape. In this study, techniques of deformation measurement using close-range photogrammetry for electric power structures were developed. Absolute deformation could be found efficiently through close-range photogrammetry in the structure deformation analysis based on time variation. Also, feasibility of the structures management system was presented based on this study.

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