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Dataset file pairs: Strongest or last? #8

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ptoews opened this issue Jan 26, 2021 · 3 comments
Closed

Dataset file pairs: Strongest or last? #8

ptoews opened this issue Jan 26, 2021 · 3 comments

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@ptoews
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ptoews commented Jan 26, 2021

I noticed that some of the files in the dataset have the same name, except one has a suffix _2, as an example:
LidarImage_000000001.hdf5 and LidarImage_000000001_2.hdf5.
What does that mean? Are those two files describing the same point in time but one contains the strongest and the other the last returns of the lidar? If yes, which is which?

Also, why do these pairs exist only for a part of the dataset and not all measurements?

Thanks in advance!

@rheinzler
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The dataset contains only one return. However, for the clear sections both returns are available.

@ptoews
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ptoews commented Apr 29, 2021

Do you know which return the single point clouds contain? Single or last?

Also, I compared the secondary point clouds with their corresponding partner and apparently all pairs are identical. Is that correct?

@rheinzler
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rheinzler commented Apr 29, 2021 via email

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