Measurement error of spatial frequency response based on sinusoidal Siemens Star

Runjia Yang; Fei Li; Baoyu Hong; Zhixiong Hu

doi:10.1117/12.2580250

5 November 2020 Measurement error of spatial frequency response based on sinusoidal Siemens Star

Runjia Yang, Fei Li, Baoyu Hong, Zhixiong Hu

Proceedings Volume 11567, AOPC 2020: Optical Sensing and Imaging Technology; 115673V (2020) https://doi.org/10.1117/12.2580250
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

In recent years, sinusoidal Siemens stars have been widely used as a method of measuring spatial frequency response (SFR). Previous researches pointed out that incorrect recognition of the Siemens star center could result in errors in SFR measurement, and these errors are more significant at high frequencies. To reduce the errors, this paper proposed two methods to correct the center of Siemens star. By calibrating various Siemens star centers with the proposed methods, it is found that both the two methods are highly consistent, with a difference of no more than 2 pixels.

Citation Download Citation

Runjia Yang, Fei Li, Baoyu Hong, and Zhixiong Hu "Measurement error of spatial frequency response based on sinusoidal Siemens Star", Proc. SPIE 11567, AOPC 2020: Optical Sensing and Imaging Technology, 115673V (5 November 2020); https://doi.org/10.1117/12.2580250

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