Title | Estimation of ISO12233 Edge Spatial Frequency Response from Natural Scene Derived Step-Edge Data |
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Type | Journal article |
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Authors | van Zwanenberg, Oliver, Triantaphillidou, Sophie, Jenkin, Robin B. and Psarrou, Alexandra |
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Abstract | The Natural Scene derived Spatial Frequency Response (NS-SFR) is a novel camera system performance measure that derives SFRs directly from images of natural scenes and processes them using ISO12233 edge-based SFR (e-SFR) algorithm. NS-SFR is a function of both camera system performance and scene content. It is measured directly from captured scenes, thus eliminating the use of test charts and strict laboratory conditions. The effective system e-SFR can be subsequently estimated from NS-SFRs using statistical analysis and a diverse dataset of scenes. This paper first presents the NS-SFR measuring framework, which locates, isolates, and verifies suitable step-edges from captures of natural scenes. It then details a process for identifying the most likely NS-SFRs for deriving the camera system e-SFR. The resulting estimates are comparable to standard e-SFRs derived from test chart inputs, making the proposed method a viable alternative to the ISO technique, with potential for real-time camera system performance measurements. |
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Keywords | Computer Science Applications |
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| Atomic and Molecular Physics, and Optics |
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| General Chemistry |
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| Electronic, Optical and Magnetic Materials |
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Journal | Journal of Imaging Science and Technology |
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Journal citation | 65 (6), pp. 60402-1-60402-16 |
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ISSN | 1062-3701 |
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Year | 2021 |
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Publisher | Society for Imaging Science & Technology |
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Accepted author manuscript | File Access Level Open (open metadata and files) |
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Digital Object Identifier (DOI) | https://doi.org/10.2352/j.imagingsci.technol.2021.65.6.060402 |
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Publication dates |
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Published online | 18 Nov 2018 |
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Published in print | Nov 2021 |
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Supplemental file | File Access Level Open (open metadata and files) |
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