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. Author manuscript; available in PMC: 2016 Aug 24.
Published in final edited form as: IEEE Trans Comput Imaging. 2016 Jan 18;2(1):1–12. doi: 10.1109/TCI.2016.2514700

Fig. 5.

Fig. 5

Estimating R and c from n = 105 simulated noisy projection images of a human mitochondrial large ribosomal subunit. Each image is of size 240 × 240 pixels. (a) Mean radial variance of the images. The curve levels off at about σ2 = 9 when r ≥ 98. The radius of compact support is chosen as R = 98. (b) Mean radial power spectrum. The curve levels off at σ2 = 9 when ξ ≥ 0.196. The band limit is chosen as c = 0.196.