Chong, Albert K.-F. (2009) Field calibration of zoom cameras for two camera- photogrammetric applications. In: RSPSoc 2009 Annual Conference, 8-11 September 2009, Leicester, England.
|HTML Citation||EndNote||Dublin Core||Reference Manager|
Full text not available from this archive.
To obtain reliable 3D measurements from photogrammetric technique imaging, cameras must be calibrated to determine the value of the principal distance and various lens parameters. As zoom and auto-focus are known to change, the principal distance at the instant of imaging the use of laboratory-calibrated value may produce significant measurement errors. The value of other lens parameters also may change as a result of field imaging. Research was carried out to determine a reliable technique to obtain the value of the principal distance and other lens parameters in the field. This research was limited to a stereo-camera configuration where two digital cameras were used to map objects. The calibration involved simultaneous computations of the principal distance and other lens parameters of both cameras using a pair of stereo-images and a temporary control panel. The objective of the paper is therefore to discuss the testing of the developed technique and demonstrate its capacity for a high-accuracy field 3D measurement. Results of this research show that accuracy improvement is in the order of two times better than the conventional technique which uses self-calibration PDs and APs.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||No evidence of copyright restrictions.|
|Uncontrolled Keywords:||camera calibration; photogrammetric technique imaging|
|Fields of Research (FOR2008):||09 Engineering > 0999 Other Engineering > 099902 Engineering Instrumentation|
09 Engineering > 0909 Geomatic Engineering > 090905 Photogrammetry and Remote Sensing
01 Mathematical Sciences > 0102 Applied Mathematics > 010299 Applied Mathematics not elsewhere classified
|Subjects:||290000 Engineering and Technology > 291000 Geomatic Engineering > 291003 Photogrammetry and Remote Sensing|
|Socio-Economic Objective (SEO2008):||E Expanding Knowledge > 97 Expanding Knowledge > 970110 Expanding Knowledge in Technology|
|Deposited On:||21 Jun 2010 14:21|
|Last Modified:||20 Sep 2011 14:27|
Archive Staff Only: edit this record