From DXOMark: More pixels offsets noise3

Started May 30, 2009 | Discussions thread
DSPographer Senior Member • Posts: 2,464
That is what I have seen also

I did see that if I take a shot with the lens cap on that I can make a correction using just the sum of the rows and the sum of the columns that removes the visible pattern noise. The problem I had was in the amount of masked pixels as you mentioned. I had hoped that the vertical noise followed a repeating pattern so that a correction could be formed by something like aggregating every fourth masked column value but the column data varies too irregularly from column to column for that.

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tko
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