examine points which are inside a polygon by GPU
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Hi All,
Does anyone know how I can speed up inpolygon function by using GPU?
Thanks.
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Sulimon Sattari
on 10 Jun 2016
I wrote an inpolygon GPU function on matlabcentral.
This will only give you speed-up if the number of test points is much much greater than the number of vertices (say, 10,000 times more test points than vertices).
Regards, Sulimon
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Walter Roberson
on 11 Nov 2011
I thought someone asked about this about a week ago, but I cannot find the posting now. The answer was that TriScatteredInterp's routine for checking points in polygons was not designed for GPU use.
Some faster point-in-polygon functions:
If, though, as the other person did, you specifically want to test whether a particular point is outside all of the polygons created by TriScatteredInterp, then you would probably have to write the GPU version of the routine yourself.
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Walter Roberson
on 12 Nov 2011
As the first demo is about mapping, probably inpoly() is part of the mapping toolbox.
I have no experience in writing GPU ccode.
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