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Pixelwise absolute error vs. high-resolution image. Each column shows pixelwise absolute error in SI between the high-resolution image and the interpolated image (“Interpolation”) or the super resolution image (“Super Resolution”). The bottom row represents the absolute difference in SI between the interpolated image and the super resolution image. The columns indicate the results from three comparative analyses, including A. Zero-padding, B. Bicubic 1, and C. Bicubic 2.
