2016-12-10 23:08:42 -0600 | received badge | ● Editor (source) |
2016-12-10 23:07:06 -0600 | commented question | Problem with Cascade Classifier Is the cascadeclassifier trained correctly? I keep getting the same error on around stage 2 or 3 generally. Can you figure out why that error is happening? What opencv_traincascade are you using? Are you using a pre-compiled one, or one you built yourself? |
2016-12-10 22:48:56 -0600 | commented question | Problem with Cascade Classifier Still, it shouldn't detect everything on the screen right? Why would that happen? |
2016-12-10 22:47:26 -0600 | received badge | ● Supporter (source) |
2016-12-10 22:47:00 -0600 | commented question | Opencv_traincascade failing on precalculation for negatives Thanks! Unfortunately, that question doesn't help me answer mine. |
2016-12-10 12:21:52 -0600 | asked a question | Opencv_traincascade failing on precalculation for negatives I have tried several times now to use opencv_traincascade (using vc12 and vc11 from Windows build), but I keep running into the error:
What is odd is that this error seems to occur at different stages. I have tinkered with my command, varying a number of the different parameters and the one that results in the most change is varying -numNeg. The more I reduce -numNeg, the higher number of stages will be computed. So, I started to suspect that maybe I had an issue with end of file and I just needed to lower the number of negatives to be: totalNumNeg (297) / desiredNumStages. So, I tried lowering the -numNeg to 5. With -featureType LBP I was able to get through 9 stages and successfully complete, but the final NEG cont : acceptance Ratio was 5 : 0.185185
(command:
Then, for kicks and giggles I tried to do -featureType HAAR with the same parameters otherwise. This time it only made it through stage 2. The NEG count : acceptanceRatio was 5 : 0.0202429 on Stage 2.
(command: Since, I didn't change the -numNeg and it still failed using HAAR instead of LBP, that leads me to believe that it has something to do with the acceptanceRatio. Is it possible that I am hitting a weird error after achieving some level of accuracy? Only once, I got this finish instead:
with the command:
Any advice would be greatly appreciated. Urgency is appreciated. I have spent every free moment this week trying to get this working and my final project is due next Friday. Thanks! |