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Noise in Overlap Report

What is the white noise that shows up on the overlap reports. And is there a way to turn it off, or at least color the image capture locations in a contrasting color?

Dave Pitman

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The overlap report is created by sampling the point cloud and checking for how many times the is covered. The white areas are just areas where the point cloud is less dense. 

The purpose of the overlap report is to show the user that they have enough overlap for processing. Basically anything less than dark blue isn't great. 

Image capture locations and footprints is a different topic but can usually be drawn out from the log file.

Zane
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I guess I'm a little confused.  There is a scale of good to bad, dark blue to red respectively.  But we also apparently have white.

So, would a dark blue area with white speckles be better or worse than say a green area?  And, since the white speckles are just not a different color within the gradient scale, is it telling me something different than the colors within the scale?  Perhaps it is something taller at that area that is causing the overlap to degrade relative to the other gradient areas? In the example above, there are stock piles that may be 40' taller than the ground they are on. But the images were captured at 300' agl so they should still be plenty high over the tops of the piles.

In the help document, the "good" report has white speckles over the blue but the bad report has few white speckles.

Maybe the white speckles should just be ignored or maybe a little more info in the help doc.

Thanks.

Dave Pitman 0 votos
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Just ignore the white. It is only white because there are less point cloud points there. Just look at the surrounding points in the area. Dense blue is not better than blue with white. It is the same. Blue is better than green. Green is better than yellow. Yellow is better than red. 

The white tends to happen in flat areas where there is less point density. 

Zane 0 votos
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