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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/3608

Title: Geometric consistency and stability of consumer-grade digital cameras for accurate spatial measurement
Authors: Wackrow, Rene
Chandler, Jim H.
Bryan, Paul
Keywords: Camera calibration
Camera stability
Digital camera
Close range photogrammetry
Issue Date: 2007
Publisher: © Remote Sensing and Photogrammetry Society and Blackwell Publishing Ltd
Citation: WACKROW, R., CHANDLER, J.H. and BRYAN, P., 2007. Geometric consistency and stability of consumer-grade digital cameras for accurate spatial measurement. The Photogrammetric Record, 22 (118), pp.121-134 [DOI: 10.1111/j.1477-9730.2007.00436.x]
Abstract: It is known that uncertain internal geometry of consumer-grade digital cameras limits the accuracy of data that can be extracted. These cameras can be calibrated, but the validity of calibration data over a period of time should be carefully assessed before subsequent photogrammetric measurement. This paper examines the geometric stability and manufacturing consistency of a typical low-cost digital camera (Nikon Coolpix 5400) by estimating the degree of similarity between interior orientation parameters (IOP), established over a oneyear period. Digital elevation models (DEMs) are extracted with differing interior orientation parameters (IOP) sets and accuracies are compared using data obtained from seven identical cameras. An independent self-calibrating bundle adjustment (GAP) and the Leica Photogrammetry Suite (LPS) software were used to provide these datasets. Results are presented that indicate the potential of these cameras to maintain their internal geometry in terms of temporal stability and manufacturing consistency. This study also identifies residual systematic error surfaces or “domes”, discernible in “DEMs of difference”. These are caused by slightly inaccurately estimated lens distortion parameters, which effectively constrain the accuracies achievable with this class of sensor.
Description: This is a journal article. It was published in the journal, The Photogrammetric Record [© Remote Sensing and Photogrammetry Society and Blackwell Publishing Ltd] and the definitive version is available at: http://www3.interscience.wiley.com/journal/118539355/home
URI: https://dspace.lboro.ac.uk/2134/3608
ISSN: 1477-9730
Appears in Collections:Published Articles (Architecture, Building and Civil Engineering)

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