<div dir="ltr">My AI thinks I'm a mop. COVID hair.<div><br></div><div>Pretty much all visual object detection/classification neural nets require a healthy number of non-positive examples. This looks like a fail in exactly that - the body shape always being under the "ball" should have lowered the probability if they had bald soccer players in the general set. Though I guess photos of bald soccer players with extremely round heads heading soccer balls could get a little fuzzy...</div><div><br></div><div>Anyhow, in our limited experience, the quality of the image database seems to matter as much or more than the classification algorithm. </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Nov 2, 2020 at 6:13 PM David Anderson via DPRGlist <<a href="mailto:dprglist@lists.dprg.org">dprglist@lists.dprg.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<div>As long as the players don't make the
same mistake you'll probably be ok...<br>
</div>
<div><br>
</div>
<div>My favorite part is when the ball gets
kicked straight toward the lineman. The camera moves very quickly
and smoothly to track the path but ends up locked on the lineman's
head when a player intercepts the ball.</div>
<div><br>
</div>
<div>So for those of you more familiar with
neural nets, is there a way to train it up on what not to
recognize? Sort of an inverse training? Say, if the soccer ball
is attached to a neck and shoulders, it's probablhy not a soccer
ball? Can you show it a bunch of pictures of things that are <u>not</u>
soccer balls to improve it's recognition?<br>
</div>
<div><br>
</div>
<div>cheers,</div>
<div>David</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>On 11/2/20 5:38 PM, Doug Paradis wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Same thing happens to me when I play lineman.</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, Nov 2, 2020 at 1:32 PM
David Anderson via DPRGlist <<a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Evidently
using an AI controlled camera that's supposed to follow the <br>
ball but gets confused by the lineman's bald head.<br>
<br>
<a href="https://www.youtube.com/watch?v=9zoJP2FkpgU" rel="noreferrer" target="_blank">https://www.youtube.com/watch?v=9zoJP2FkpgU</a><br>
<br>
In fairness, in that lighting, his head does look a lot like
the ball.<br>
<br>
cheers!<br>
<br>
dpa<br>
<br>
<br>
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</blockquote>
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