Modulation Transfer Function Extraction and Parametric Effects
Keywords:
Optical transfer function, modulation transfer function, image chain simulation, imaging, image sensors, image sampling, image resolution, image restoration, Wiener filteringAbstract
We compute the optical transfer function and corresponding satellite image estimate in order to test validity of our modulation transfer function (MTF) extraction algorithms. The test targets allow MTF computation by using slanted edge and sine wave star patterns. Comparison of extracted MTFs with the input ones yields 0.013% mean squared error for the slanted edge method and less error for the sine wave star method. Various factors affect the extracted MTF results such as slanted edge angle, noise level, image restoration level, region of interest selection and oversampling factor. We investigated effect of each factor on the MTF extraction performance.
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