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openantz / antz

ANTz immersive 3D data visualization engine
https://openantz.com
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We need point geometry, particularly for point cloud LIDAR data #160

Open jsale opened 9 years ago

jsale commented 9 years ago

I missed an opportunity to scoop UCSD's JSoE with a viz of campus lidar data during a campus emergency drill because we can't do millions of points and still navigate the space in real-time. The geometries which perform the best are cube and tetrahedra but they bog down with only a few hundred thousand. Obviously we already have a "Point" geometry but it is not a point, it is an octahedron. You get my point. :-)

saxondigital commented 9 years ago

agreed!

ANTz performs a series of topological based transforms per node, the transforms are computationally costly and unnecessary for point data.

For point based data such as terrain and other plots we can attach them to a node as track data (or custom type.) All transforms of the point-data's parent node would be inherited, (scaling, position and rotation.) Point data would them be loaded and drawn similar to channel track data using a Vertex Array (or VBO.) This can efficiently support both static data sets and live animated data.

saxondigital commented 8 years ago

Jeff, can you provide a sample LIDAR dataset to experiment with?

Also, (on a tangent) we may want to tie this to line plot graphs such as GPS data, EEG sensors, Oscillscope graphs, etc….

jsale commented 8 years ago

Shane,

I'm not exactly sure what I should send you. I have attached a file which I think is lidar but there seems to be many different formats. They all appear to be ascii text containing xyz coordinates, so hopefully the attached will work for you but if not, here's a link to an online resource. You can also download lidar free from OpenTopography.org.

http://www.qcoherent.com/support/data.html

http://www.opentopography.org/index.php

http://pointclouds.org/media/

Here's where I got the bunny lidar data:

http://graphics.stanford.edu/data/3Dscanrep/

Jeff

On Fri, Dec 4, 2015 at 1:27 PM, Shane Saxon notifications@github.com wrote:

Jeff, can you provide a sample LIDAR dataset to experiment with.

Also, (on a tangent) we may want to tie this to line plot graphs such as GPS data, EEG sensors, Oscillscope graphs, etc….

— Reply to this email directly or view it on GitHub https://github.com/openantz/antz/issues/160#issuecomment-162086203.