8 December 2015 The suitability of lightfield camera depth maps for coordinate measurement applications
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Proceedings Volume 9875, Eighth International Conference on Machine Vision (ICMV 2015); 987523 (2015) https://doi.org/10.1117/12.2228593
Event: Eighth International Conference on Machine Vision, 2015, Barcelona, Spain
Abstract
Plenoptic cameras can capture 3D information in one exposure without the need for structured illumination, allowing grey scale depth maps of the captured image to be created. The Lytro, a consumer grade plenoptic camera, provides a cost effective method of measuring depth of multiple objects under controlled lightning conditions. In this research, camera control variables, environmental sensitivity, image distortion characteristics, and the effective working range of two Lytro first generation cameras were evaluated. In addition, a calibration process has been created, for the Lytro cameras, to deliver three dimensional output depth maps represented in SI units (metre). The novel results show depth accuracy and repeatability of +10.0 mm to -20.0 mm, and 0.5 mm respectively. For the lateral X and Y coordinates, the accuracy was +1.56 μm to −2.59 μm and the repeatability was 0.25 μm.
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Shreedhar Rangappa, Mitul Tailor, Jon Petzing, Peter Kinnell, Michael Jackson, "The suitability of lightfield camera depth maps for coordinate measurement applications", Proc. SPIE 9875, Eighth International Conference on Machine Vision (ICMV 2015), 987523 (8 December 2015); doi: 10.1117/12.2228593; https://doi.org/10.1117/12.2228593
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