Alternatives to PCV

[PablerasBCN]

Hi,

PCV greatly enhances the perception of the topology, yet it's quality in detail capture degrades bastly with big datasets or big tiles. Even if cranking upd the rays, at some tile sizes it takes forever and the outcome is not as good as when breaking into small tiles. Which could be a solution if the edges of the tiles did not get brighter and did not lose context of the nearby data.

I was computing number of neighbours to cleanup the dataset when noticed that it quite of captures a bunch of detail when displayed in grey scale.

https://drive.google.com/file/d/141Pfz3 ... sp=sharing

It is obviously not perfect as low density areas will get black. But may be, with a fixed grey scale, and breaking the data a couple of times using the dinamic grey scale so there are not too black areas this may end up being a great way to visualize data. One of the greatests pluses is that the size of the tile does not affect the output quality. The "hard" part is to use a correct scale.

This solution works great with mobile mapping data, it may not work with static scanner.

I will work a bit mor on this idea, creating the scales and may be trying with other geometric features, surface variation may also be itneresting.

Also, theese geometric features may work excellent in 3DMASC to sepparate organic fron man made. So far I had not been able to bet good ressults with 3dmasc, but that is offtopic.

[daniel]

That's interesting, even though it's not clear to me why the density alone would follow a similar pattern as illumination / illuminance. Or is it because of the surface property of the different materials that allow for more or less reflections?