18 December 2003 Circular-edge spatial frequency response test
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Abstract
A new method for testing the resolution of digital cameras has been developed. The new method is an extension of the ISO 12233 Slanted-edge Spatial Frequency Response test. The new method computes the spatial frequency response along the edge of a circle. It is especially well adapted to inexpensive imaging systems with rotationally symmetric blur and lens distortion. In addition to presenting the new method, a set of practical improvements, which can be applied to both the slanted-edge and circular-edge methods, is described.
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Richard L Baer, "Circular-edge spatial frequency response test", Proc. SPIE 5294, Image Quality and System Performance, (18 December 2003); doi: 10.1117/12.524829; https://doi.org/10.1117/12.524829
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