<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>scardine</author><text>Check out the talk &amp;quot;Militarizing Your Backyard with Python: Computer Vision and the Squirrel Hordes&amp;quot;[1] from PyCon 2012. He wired a water canon to a camera able to tell squirrels from birds:&lt;p&gt;&amp;gt; Has your garden been ravaged by the marauding squirrel hordes? Has your bird feeder been pillaged? Tired of shaking your fist at the neighbor children? Learn how to use Python to tap into computer vision libraries and build an automated sentry water cannon capable of soaking intruders.&lt;p&gt;Previous discussion here: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;news.ycombinator.com&amp;#x2F;item?id=3710107&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;news.ycombinator.com&amp;#x2F;item?id=3710107&lt;/a&gt;&lt;p&gt;[1] &lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;pyvideo.org&amp;#x2F;pycon-us-2012&amp;#x2F;militarizing-your-backyard-with-python-computer.html&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;pyvideo.org&amp;#x2F;pycon-us-2012&amp;#x2F;militarizing-your-backyard-...&lt;/a&gt;</text><parent_chain><item><author>tjoff</author><text>A bit unrelated but I&amp;#x27;m in a need for some sort of cat deterrent that will spray water at all cats except mine. Also it would be nice if humans were exempted as well.&lt;p&gt;I haven&amp;#x27;t done the legwork myself yet, but would this be an appropriate project to check out for this? 
(As for identifying my cat I&amp;#x27;ve been thinking about alternative solutions such as rfid necklace or something but it is quickly getting past &amp;#x27;quick hack&amp;#x27;).</text></item></parent_chain></comment><story><title>Face recognition in images and video with Python</title><url>https://www.pyimagesearch.com/2018/06/18/face-recognition-with-opencv-python-and-deep-learning/</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>rhplus</author><text>A Bluetooth LE device similar to Tile[1] might be a cheap and reliable signal source in a package small enough to attach to a collar. If you had two Bluetooth receivers on either side of your camera&amp;#x27;s visual field, you could compare signal strengths during motion and positively identify your cat (assuming feline motion detection is a solved problem).&lt;p&gt;[1] &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.thetileapp.com&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.thetileapp.com&amp;#x2F;&lt;/a&gt;</text><parent_chain><item><author>tjoff</author><text>A bit unrelated but I&amp;#x27;m in a need for some sort of cat deterrent that will spray water at all cats except mine. Also it would be nice if humans were exempted as well.&lt;p&gt;I haven&amp;#x27;t done the legwork myself yet, but would this be an appropriate project to check out for this? 
(As for identifying my cat I&amp;#x27;ve been thinking about alternative solutions such as rfid necklace or something but it is quickly getting past &amp;#x27;quick hack&amp;#x27;).</text></item></parent_chain></comment><story><title>Face recognition in images and video with Python</title><url>https://www.pyimagesearch.com/2018/06/18/face-recognition-with-opencv-python-and-deep-learning/</url></story>