[Tilesathome] Lowzoom approaches. Feedback appreciated.

[spaetz]

On Wed, Jul 16, 2008 at 08:47:11AM +0100, 80n wrote:
> There has been a lot of work done to get the lowzoom tiles looking good (by
> Alan Millar, I believe).
> It would be a shame to have this good work undone by the appearance of pale
> spotty tiles ;)

I have to admit that they are not very healthy looking. :-) I hoped that the paleness would only be a temporary thing, but I agree it would be a shame to lose the great work that has been done.
 
> I vote for option 1 as the immediate quick fix - which should preserve all
> the good work done by Alan, and then option 2 when someone has time to work
> on it.

OK, I HAVE TURNED OFF THE AUTOMATIC LOWZOOM GENERATION FOR NOW! CLIENT AUTHORS UPLOAD LOWZOOM TILESETS YOURSELF!
Lowzoom tilesets comprise tiles from z6-z11, There are the layers 'tile','caption','captionless', just like before.
Upload whatever you can/want.

> The automatic server-side processing of lowzoom tiles looks like the best
> approach, assuming the server can deal with the load.  I suspect that its a
> better trade-off than the bandwidth used by doing it client side.

The server didn't seem to be bothered by doing the tile stitching itself, it was doing fine, performance wise. A lowzoom tileset took 40-60 seconds.

spaetz