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<div class="moz-cite-prefix">Do you mean how many bytes?<br>
<br>
Looking at my Landsat tile pyramids (levels 4 to 12), they're
about the same number of bytes (hmm, I expected them to be
double...)<br>
<br>
But my source images:<br>
- no compression on existing files (tiffs, e.g not jpeg)<br>
- 3 band (color) imagery<br>
<br>
The resulting tiles:<br>
- compressed PNGs<br>
- four bands (one alpha channel for transparency)<br>
<br>
So my guess is somewhere between "same size" to "double the
number of bytes" (unless the source imagery is compressed, then it
will be 5 to 10 times larger)<br>
<br>
<pre class="moz-signature" cols="72">Best Regards,
Brent Fraser</pre>
On 1/28/2013 5:53 PM, Paul Wickman wrote:<br>
</div>
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cite="mid:CAFo+T1k4B36ssNDRWPuJuQ7EDi4Zf6Q3rSskRnKWk-rup0ZwQQ@mail.gmail.com"
type="cite">
<div dir="ltr">Greetings,
<div><br>
</div>
<div>I know this type of question goes around often in various
flavors. Difficult to estimate exact size of rendered tiles,
but thought I'd try to get some opinions.</div>
<div><br>
</div>
<div>
<div>I see this questions asked in a variety of ways and I
know it's not exactly precise on how to get the answer, but
I'll throw my question out to see what I get ;)</div>
<div><br>
</div>
<div>We have a client who would like us to tile and serve up
high-resolution aerial photography that they own. The area
is about 800 square miles and the imagery is 6-inch
resolution. They'd like to be able to view the imagery at
zoom levels 11 through 20 (with level 20 being 1 pixel=6
inches). Is there any way at all to determine how large a
resulting raster tile set might be?</div>
<div><br>
</div>
<div style="">Many thanks,</div>
<div style=""> Paul</div>
<div>
<div><br>
</div>
-- <br>
Paul Wickman<br>
CTO | Flat Rock Geographics<br>
612.280.5850 | <a moz-do-not-send="true"
href="mailto:paul@flatrockgeo.com" target="_blank">paul@flatrockgeo.com</a><br>
<a moz-do-not-send="true" href="http://www.flatrockgeo.com"
target="_blank">www.flatrockgeo.com</a> | <a
moz-do-not-send="true"
href="http://twitter.com/flatrockgeo" target="_blank">twitter.com/flatrockgeo</a>
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