Why do you want to see outlines autogenerated from aerial imagery, you could just look at the aerial imagery?<div><br></div><div>Going out and getting the address/use details and then adding that to a building outline, now that's helpful added data that you can't get from automation.<br>
<br><div class="gmail_quote">On 7 January 2013 03:14, Jeff Meyer <span dir="ltr"><<a href="mailto:jeff@gwhat.org" target="_blank">jeff@gwhat.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Dave - <div><br></div><div>What is the collection date of the imagery used? I couldn't find reference to it.</div><div><br></div><div>What would be the measure of "relatively" out of date? Outside of newly developed areas, even imagery that is 5 years old could reasonably be expected to be ~95% accurate over most of the country. (Based on building completion estimates). So, isn't much of what's actually on the ground actually depicted in imagery that's only a few years old?<br>
<div><br></div><div><div>Is there measured proof that filled maps are never QA'd? If so, why does Google offer tools to do just that? If there is no proof, what is the basis of your hypothesis?</div><div><br></div><div>
What would stop OSMers from QAing this type of data collection prior to inclusion in OSM?</div><div><br></div><div>Why is accuracy the primary measure of concern here? As opposed to, say: completeness or consistency? </div>
<div><br></div><div>Would it be that big of a problem if someone mapped somewhere other than where these building images are, as long as they were mapping?</div><div><br></div><div>Thanks, Jeff</div><div><div><div class="h5">
<br><div class="gmail_quote">
On Sun, Jan 6, 2013 at 5:28 PM, Dave F. <span dir="ltr"><<a href="mailto:davefox@madasafish.com" target="_blank">davefox@madasafish.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>I understand what & why you're
saying this, Nathan, but remember these images are all,
relatively, out of date. I would rather that gaps were left to be
filled with what's is actually on the ground rather than what was
there a few years ago. <br>
<br>
I take pride that my city has newest buildings & roads mapped
in OSM before *any* other mapping service. (I'm still getting
around to adding the old, been there for centuries, houses) <br>
<br>
Having all areas filled with polygons of buildings doesn't
actually encourage users to refill it with up to date data. More
often than not, they think because *some* data is mapped it must
be correct & go & map elsewhere. <br>
<br>
Personally I'd rather have (slightly) less, but more accurate data
than blanket inaccurate data. When I first started ('09) I thought
the opposite. <br><div><div>
<br>
<br>
<br>
On 07/01/2013 00:50, Nathan Mixter wrote:<br>
</div></div></div>
<blockquote type="cite"><div><div>I'm not sure if this link has been posted before, but
for those wondering how Google got their new buildings, there is a
link at PC Magazine <a href="http://www.pcmag.com/article2/0,2817,2411232,00.asp" target="_blank">http://www.pcmag.com/article2/0,2817,2411232,00.asp</a>.
Apparently they recently uploaded 25M buildings done through an
automated image recognition software. <br>
<br>
I've manually added most of the buildings in the city of Gilroy (<a href="http://tools.geofabrik.de/mc/?lon=-121.56369&lat=37.00553&zoom=17" target="_blank">http://tools.geofabrik.de/mc/?lon=-121.56369&lat=37.00553&zoom=17</a>)
so I was curious to find out where they got their data from. I
thought maybe the city or county had a secret source that I hadn't
found. And I checked everywhere I could to find buildings that
could have been imported.<br>
<br>
I was wondering if OSM could do the same thing. Could we buy as a
group a program like Feature Analyst, eCognition or Imagine
Objective and add buildings that way? We could combine the
buildings with any existing address points available. I checked
into it earlier this year and one program was about $2,000. But
the money could be quickly raised. I know I would be willing to
donate.<br>
<br>
<br>
<fieldset></fieldset>
<br>
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<br></blockquote></div><br><br clear="all"><div><br></div></div></div><span class="HOEnZb"><font color="#888888">-- <br><font size="1">Jeff Meyer<br>Global World History Atlas<br><a href="http://www.gwhat.org" target="_blank">www.gwhat.org</a><br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br>Gregory<br><a href="mailto:osm@livingwithdragons.com">osm@livingwithdragons.com</a><br><a href="http://www.livingwithdragons.com">http://www.livingwithdragons.com</a>
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