{"title":"CAMERA PLATE‐REDUCTION BY MEANS OF STAR‐FIELD REFERENCE","authors":"G. Groves, G. Owen","doi":"10.1111/J.1477-9730.1960.TB01294.X","DOIUrl":null,"url":null,"abstract":"The theory is developed for determining the direction of a point-object by photographing it on the same plate as a star field and using the stars as reference points. A minimum of three reference stars is necessary for determining the camera orientation and with more than three stars a least-squares solution is possible. \n \n \n \nThe method of analysis involves the solution of simultaneous equations for nine “plate constants”. Once the plate constants have been found, the direction of an object may readily be obtained from the coordinates of its image on the plate. The six elements of orientation of the camera may also readily be found from the plate constants. Part of the theory has been programmed for the Pegasus electronic computer. An appendix gives a convenient method of applying atmospheric refraction corrections to direction cosines.","PeriodicalId":56094,"journal":{"name":"Photogrammetric Record","volume":"15 1","pages":"338-356"},"PeriodicalIF":2.1000,"publicationDate":"2006-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1111/J.1477-9730.1960.TB01294.X","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Photogrammetric Record","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1111/J.1477-9730.1960.TB01294.X","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"GEOGRAPHY, PHYSICAL","Score":null,"Total":0}
引用次数: 1
Abstract
The theory is developed for determining the direction of a point-object by photographing it on the same plate as a star field and using the stars as reference points. A minimum of three reference stars is necessary for determining the camera orientation and with more than three stars a least-squares solution is possible.
The method of analysis involves the solution of simultaneous equations for nine “plate constants”. Once the plate constants have been found, the direction of an object may readily be obtained from the coordinates of its image on the plate. The six elements of orientation of the camera may also readily be found from the plate constants. Part of the theory has been programmed for the Pegasus electronic computer. An appendix gives a convenient method of applying atmospheric refraction corrections to direction cosines.
期刊介绍：
The Photogrammetric Record is an international journal containing original, independently and rapidly refereed articles that reflect modern advancements in photogrammetry, 3D imaging, computer vision, and other related non-contact fields. All aspects of the measurement workflow are relevant, from sensor characterisation and modelling, data acquisition, processing algorithms and product generation, to novel applications. The journal provides a record of new research which will contribute both to the advancement of photogrammetric knowledge and to the application of techniques in novel ways. It also seeks to stimulate debate though correspondence, and carries reviews of recent literature from the wider geomatics discipline.
Relevant topics include, but are not restricted to:
- Photogrammetric sensor calibration and characterisation
- Laser scanning (lidar)
- Image and 3D sensor technology (e.g. range cameras, natural user interface systems)
- Photogrammetric aspects of image processing (e.g. radiometric methods, feature extraction, image matching and scene classification)
- Mobile mapping and unmanned vehicular systems (UVS; UAVs)
- Registration and orientation
- Data fusion and integration of 3D and 2D datasets
- Point cloud processing
- 3D modelling and reconstruction
- Algorithms and novel software
- Visualisation and virtual reality
- Terrain/object modelling and photogrammetric product generation
- Geometric sensor models
- Databases and structures for imaging and 3D modelling
- Standards and best practice for data acquisition and storage
- Change detection and monitoring, and sequence analysis
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