Goncalves, DPGriffith, DJ2007-03-272007-06-072007-03-272007-06-072006-05Goncalves, DP and Griffith, DJ. 2006. Estimating uncertainty in resolution tests. Optical Engineering, vol. 45(5), pp 1-60091-3286http://hdl.handle.net/10204/2087http://hdl.handle.net/10204/2087Resolution testing of imaging optical equipment is still commonly performed using the USAF 1951 target. The limiting resolution is normally calculated from the group and element that can just be resolved by an observer. Although resolution testing has limitations, its appeal lies in the fact that it is a quick test with low complexity. Resolution uncertainty can serve as a diagnostic tool, aid in understanding observer variability, and assist in planning experiments. It may also be necessary to satisfy a customer requirement or international standard. This paper derives theoretical results for estimating resolution and calculating its uncertainty, based on observer measurements, while taking the target spatial-frequency quantization into account. It is shown that estimating the resolution by simply averaging the target spatial frequencies yields a biased estimate, and thus an improved estimator is provided. An application illustrates how the results derived can be incorporated into a larger uncertainty analysis.173603 bytesapplication/pdfenCopyright: 2006 SPIE-International Society of Optical EngineeringResolution testingUSAF 1951 test targetResolution uncertaintyTarget spatial-frequency quantizationOpticsArticleGoncalves, D., & Griffith, D. (2006). Estimating uncertainty in resolution tests. http://hdl.handle.net/10204/2087Goncalves, DP, and DJ Griffith "Estimating uncertainty in resolution tests." (2006) http://hdl.handle.net/10204/2087Goncalves D, Griffith D. Estimating uncertainty in resolution tests. 2006; http://hdl.handle.net/10204/2087.TY - Article AU - Goncalves, DP AU - Griffith, DJ AB - Resolution testing of imaging optical equipment is still commonly performed using the USAF 1951 target. The limiting resolution is normally calculated from the group and element that can just be resolved by an observer. Although resolution testing has limitations, its appeal lies in the fact that it is a quick test with low complexity. Resolution uncertainty can serve as a diagnostic tool, aid in understanding observer variability, and assist in planning experiments. It may also be necessary to satisfy a customer requirement or international standard. This paper derives theoretical results for estimating resolution and calculating its uncertainty, based on observer measurements, while taking the target spatial-frequency quantization into account. It is shown that estimating the resolution by simply averaging the target spatial frequencies yields a biased estimate, and thus an improved estimator is provided. An application illustrates how the results derived can be incorporated into a larger uncertainty analysis. DA - 2006-05 DB - ResearchSpace DP - CSIR KW - Resolution testing KW - USAF 1951 test target KW - Resolution uncertainty KW - Target spatial-frequency quantization KW - Optics LK - https://researchspace.csir.co.za PY - 2006 SM - 0091-3286 T1 - Estimating uncertainty in resolution tests TI - Estimating uncertainty in resolution tests UR - http://hdl.handle.net/10204/2087 ER -