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	<title>Indianapolis Museum of Art Blog &#187; AutoStitch</title>
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		<title>Rotation and revolution in the park</title>
		<link>http://www.imamuseum.org/blog/2009/06/23/rotation-and-revolution-in-the-park/</link>
		<comments>http://www.imamuseum.org/blog/2009/06/23/rotation-and-revolution-in-the-park/#comments</comments>
		<pubDate>Tue, 23 Jun 2009 17:18:17 +0000</pubDate>
		<dc:creator>Ed</dc:creator>
				<category><![CDATA[Art and Nature Park]]></category>
		<category><![CDATA[Technology]]></category>
		<category><![CDATA[100 acres]]></category>
		<category><![CDATA[art blog]]></category>
		<category><![CDATA[AutoStitch]]></category>
		<category><![CDATA[geology]]></category>
		<category><![CDATA[ima]]></category>
		<category><![CDATA[Indianapolis Museum of Art]]></category>
		<category><![CDATA[panoramas]]></category>
		<category><![CDATA[photography]]></category>
		<category><![CDATA[Virginia B. Fairbanks Art and Nature Park]]></category>

		<guid isPermaLink="false">http://www.imamuseum.org/blog/?p=6013</guid>
		<description><![CDATA[A few weeks ago, when the weather was not as scorching as it&#8217;s predicted to be this week, I wandered outside for a walk around the lake with my camera after lunch. I had been out before earlier in the spring and created a great panorama from a set of photos that I had taken, [...]]]></description>
			<content:encoded><![CDATA[<p>A few weeks ago, when the weather was not as scorching as it&#8217;s predicted to be this week, I wandered outside for a walk around the lake with my camera after lunch. I had been out before earlier in the spring and created a great panorama from a set of photos that I had taken, but the sky was a bit overcast and the overall mood was somewhat gloomy.</p>
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<p>I use a great tool called <a href="http://www.cs.ubc.ca/~mbrown/autostitch/autostitch.html">AutoStitch</a> to create these panoramas from individual photos. You just have to manually adjust your focus and exposure and then rotate in place while shooting away. As long as there&#8217;s some overlap between shots and the lighting is consistent, it does a pretty good job of merging photos automatically. For this scene, I had to stitch a few groups independently and then stitch those mini-panos into the full panorama. You can see above that the lighting had changed due to shifting clouds and the complexity of the bushes even thwarted my own pattern matching capability. The photos that I took a few weeks ago stitched a little more easily and capture a more cheerful vista.</p>
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<p class="wp-caption-text">Click on the image and drag the mouse to turn right or left.</p>
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<p>That&#8217;s not the end of my tale, however. I continued walking around the lake, expecting that I would be able to make a full revolution because the weather had been pleasant for quite a while and I had been watching our <a href="http://dashboard.imamuseum.org/series/Stream+Gauge+Height">stream gauge reading</a> drop daily in anticipation of a nice stroll. Unfortunately, when I got to the inlet that connects the river with the lake, I found that I wouldn&#8217;t be able to ford it while keeping myself dry below the knees. Not unless I had an olympic-class long jump.</p>
<p>You can now learn some <a href="http://www.imamuseum.org/art-and-nature-park/geology">basic geology</a> about the White River and 100 Acres on the IMA website, thanks to our collaboration with the <a href="http://www.usgs.gov/">U.S. Geological Survey</a>. There&#8217;s still more information to come about floods and we&#8217;re also looking into adding some guidelines that will help IMA staff and visitors determine when the park is flooded.</p>
<p>From what I&#8217;ve learned, the inlet is more complicated &#8211; the water level there depends on the amount of water flowing in the river, the amount of water that has entered (from both the river and precipitation) and exited the lake, and the rate of evaporation. If we can solve that puzzle we&#8217;ll be able to determine when it&#8217;s possible to hike all the way around the lake. For now, just keep in mind that even after a few days of fair weather the inlet may be too wide to cross without getting wet.</p>
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