Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-5, 517-521, 2014
https://doi.org/10.5194/isprsarchives-XL-5-517-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
 
06 Jun 2014
Multispectral calibration to enhance the metrology performance of C-mount camera systems
S. Robson1, L. MacDonald1, S. A. Kyle1, and M. R. Shortis2 1Dept. of Civil, Environmental & Geomatic Engineering, UCL, London, UK
2School of Mathematical and Geospatial Sciences, RMIT University, Melbourne, Australia
Keywords: Metrology, camera calibration, photogrammetry, multispectral imaging, chromatic aberration Abstract. Low cost monochrome camera systems based on CMOS sensors and C-mount lenses have been successfully applied to a wide variety of metrology tasks. For high accuracy work such cameras are typically equipped with ring lights to image retro-reflective targets as high contrast image features. Whilst algorithms for target image measurement and lens modelling are highly advanced, including separate RGB channel lens distortion correction, target image circularity compensation and a wide variety of detection and centroiding approaches, less effort has been directed towards optimising physical target image quality by considering optical performance in narrow wavelength bands. This paper describes an initial investigation to assess the effect of wavelength on camera calibration parameters for two different camera bodies and the same ‘C-mount’ wide angle lens. Results demonstrate the expected strong influence on principal distance, radial and tangential distortion, and also highlight possible trends in principal point, orthogonality and affinity parameters which are close to the parameter estimation noise level from the strong convergent self-calibrating image networks.
Conference paper (PDF, 1229 KB)


Citation: Robson, S., MacDonald, L., Kyle, S. A., and Shortis, M. R.: Multispectral calibration to enhance the metrology performance of C-mount camera systems, Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-5, 517-521, https://doi.org/10.5194/isprsarchives-XL-5-517-2014, 2014.

BibTeX EndNote Reference Manager XML