digitalearthpacific / dep-coastlines

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More cloud cleaning #26

Closed jessjaco closed 7 months ago

jessjaco commented 1 year ago

Issues with clouds are causing noise.

In this case, here is the effect: image

3 year composite for 2013/2015 nir looks like this: image

Those are clouds coming through in the northwest of the image.

First, I limited items to tier one only. That helped some (but may have effects on available data).

In this case I looked at adjacent masks for a single date, here 2013-07-18 (this is pathrow 87 56 btw). First image, identified clouds are blue, orange is clear image

Second image, taken half a second later: image

Obviously missing some clouds, as this is nir after masking image

I created a new method to combine cloud masks for the same day with bitwise-or,here is new output image

We're getting there.