Thanks Tisham,
I believe it's just return intensity. Hunting docs from supplier. I
see they've tagged the utm projection scale as one meter. Just taking
the bounding box on one sample it's 1956x2000=3,912,000 sq. meters and
there are 2,502,079 points for first return. So I'm thinking one meter
will be way to small (have holes). I'll play with it.
Thanks again,
Dave
On 02/08/2011 08:15 AM, Tisham wrote:
Hi David,
Is this a gridded terrain image i.e. an interpolated terrain from the
unevenly sampled lidar ? or is this a representation of the return
intensity ? I would recommend tin generation and gridding follwed by
some rough statistics on deviation from actual ground point values.
For the interpolated intensity I am not sure what would be the best test.
Cheers,
Tisham.
On 8/02/2011 5:11 AM, David Burken wrote:
All,
I'm writing a plugin for ossim to form an image from las files. This
will be open sourced as soon as it's useful. Does anyone have any
advise on how to choose a grid resolution which will determine the
lines and samples? I thought about using the square root of the
number of points for a return and then scaling by ratio of the
bounding box. It would be nice to pick a grid size that gets at
least one point for grid. Any ideas?
Thanks in advance,
Dave
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