<story><title>Extracting image metadata at scale</title><url>http://techblog.netflix.com/2016/03/extracting-image-metadata-at-scale.html</url></story><parent_chain></parent_chain><comment><author>woodman</author><text>For their image resizing tasks, I wonder if they&amp;#x27;ve tried anything more complex than simply cropping around points of interest, something like seam carving [0].  I imagine that it would be pretty cheap to run a bunch of different algorithms on an image and then A|B test it on Amazon mechanical turk.&lt;p&gt;[0] &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;en.wikipedia.org&amp;#x2F;wiki&amp;#x2F;Seam_carving&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;en.wikipedia.org&amp;#x2F;wiki&amp;#x2F;Seam_carving&lt;/a&gt;, &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.youtube.com&amp;#x2F;watch?v=6NcIJXTlugc&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.youtube.com&amp;#x2F;watch?v=6NcIJXTlugc&lt;/a&gt;, &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.youtube.com&amp;#x2F;watch?v=AJtE8afwJEg&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.youtube.com&amp;#x2F;watch?v=AJtE8afwJEg&lt;/a&gt;</text></comment>
<story><title>Extracting image metadata at scale</title><url>http://techblog.netflix.com/2016/03/extracting-image-metadata-at-scale.html</url></story><parent_chain></parent_chain><comment><author>Xyik</author><text>don&amp;#x27;t think it actually talks much about how it does it at &amp;#x27; scale&amp;#x27;. how expensive is it to perform these operations? are images cropped dynamically as they are requested or do they pre-process the images and cache it somewhere.&lt;p&gt;did they do anything clever to parallelize the process? what underlying technologies do they use...</text></comment>