Estimation of IMF between a given exposure image and the reference. (a) A binary map where the white pixel denotes g
(p)=1 (well contrasted and static). (b) Overlap of the reference image with the binary map. (c) Overlap of comparing image with the binary map. (d) Each dot represents a pair of pixel values (only for the pair of colored pixels of (b) and (c)), and the red line is the estimated IMF by curve fitting. (e) Histogram of the distances of dots from the IMF. (f) The dots out of 4σ range are considered to include ghost pixels.