Better Results with ofxFaceTracker

Hello,
I was wondering if anyone out there knows how to get more reliable results with ofxFaceTracker. The video I’m testing with only seems to recognize faces 50% of the time. I’ve attached screenshots of the examples I’m using. It recognizes 01 about 50% of the time. It doesn’t recognize 02 at all. It recognizes 03 pretty much 100%. 04 is about 50%. 05 is 0%. 06 is 0%. And 07 is about 50%. I tried using HD resolution to see if that would make a difference, but it didn’t. I also tried upping the contrast, but that didn’t make a difference either.

I’ve had really bad luck with ofxFaceTracker since I’m a glasses wearing individual so I’m not too surprised it’s not picking up those first two. The shadows are pretty heavy on 05 and the glasses and super tiny face of 06 are pretty impossible as well. Not sure what the issue could be with 04 and 07 though…07 the face is a little sideways but Kyle would be able to speak to what the tolerance there is