Comparisons between old (v7.0) and new (v7.5) channel-noise correction algorithms:
45413b142-w1-old_new.gif
44581a026-w2-old_new.gif

Here's a comparison of the new (v7.5) algorithm with the channel-noise 
corrections turned off:
44581a026-w2-nocorr_new.gif

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F. Masci, 3/5/1014