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2018-01-09 03:24:51 -0600 | commented question | Open usb camera using name instead of index in openCV3.2 mmm...@kbarni, in this way I have to know the cam id...by the way, it does not work |
2018-01-08 10:58:11 -0600 | commented question | Open usb camera using name instead of index in openCV3.2 videoMine is the name of the device I re-mapped.... suppose /dev/video0 in /dev/videoMine |
2018-01-08 05:07:01 -0600 | asked a question | Open usb camera using name instead of index in openCV3.2 Open usb camera using name instead of index in openCV3.2 Hi all, I have an issue with my USB camera. When I plug it int |
2017-05-24 10:30:41 -0600 | asked a question | Set multiple rows and single column at the same time in Matrix Hi, i'd like to know how to set multiple rows and single column at the same time in Matrix. Ex: suppose that I want to set:
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2017-05-24 08:29:56 -0600 | received badge | ● Necromancer (source) |
2017-05-24 08:28:29 -0600 | answered a question | Meaning of Output of Artificial Neural Network The out value 2 means that the highest value in your output is output(2).....for this reason, your testdata is classified as class 3 |
2017-05-24 04:23:17 -0600 | commented answer | ANN in opencv 3 ok. thanks a lot....you are always "enlightening" in your answers ;) |
2017-05-24 04:09:13 -0600 | commented answer | ANN in opencv 3 ok great....got the point. thanks! Last question (:P): do you know how to compute a confidence of the output label? |
2017-05-24 04:05:12 -0600 | commented answer | How to get the confidence value of detections got through ANN_MLP? yes, but sometimes the logit output is greater than 1...How you can determine a sort of confidence? |
2017-05-24 03:55:00 -0600 | commented answer | ANN in opencv 3 no no...my question is: in the example above the labels are putted in the first two position of my feature vector: position 0 and position 1 of data matrix represent the label of the two classes This is not correct in my opinion, isn't it? It shoud be responses instead of data My second question was: how to choose the numbers of hidden layers? how many neurons I have to put? |
2017-05-24 03:07:49 -0600 | commented answer | ANN in opencv 3 is it correct that my feature data should have in the first and second position the label of the class and the features themselves in the rest? as data matrix in the example above. furthermore, having a feature vector of 200 elements with 160 training samples (4 classes 40 elements per class), which should be the correct number of layerSize? |
2017-05-23 05:44:09 -0600 | commented answer | ANN in opencv 3 what do you mean with "larger"? for example...having [-3.7452435, -4.7302642] is 1 the prediction label, isn't it? |
2017-05-23 05:37:07 -0600 | commented answer | ANN in opencv 3 so, in my case, considering only two classes, it means that the prediction label is 0? (ps in case of two negative numbers is the max abs?) |
2017-05-23 05:25:33 -0600 | commented answer | Loading a pre-trained KNN classifier - python I got the point.....i tought that the method were the same. thanks for your clarification |
2017-05-23 05:12:38 -0600 | commented answer | Loading a pre-trained KNN classifier - python @berak....oops sorry |
2017-05-23 05:09:05 -0600 | answered a question | Loading a pre-trained KNN classifier - python This code save an img as xml but should be similar in your case: |
2017-05-23 05:05:15 -0600 | asked a question | ANN in opencv 3 Hi, I was trying to run this example found in this forum: Unfortunately, I'm not able to understand the meaning of the output: im my case, considering my test data, I obtain something like: [0.20409864, -0.15044725] what does it mean? should I obtain a label class, isn't it? Am I doind something wrong? |
2017-04-20 03:42:02 -0600 | received badge | ● Enthusiast |
2017-04-19 08:54:16 -0600 | commented answer | LibSVM and OpenCV 3.1 Thanks @StevenPuttemans ... one more question: if I have a cv::Mat structure instead of a file? all my features are in a Mat structure (as asked from the openCV SVM implementation) |
2017-04-19 04:48:59 -0600 | asked a question | LibSVM and OpenCV 3.1 Hi Guys, someone of you knows how to include LibSVM (http://www.csie.ntu.edu.tw/~cjlin/lib...) in OpenCV ? I would like to use LibSVM instead of OpenCV SVM that is less powerfull (i.e. no probability is given in multi-class problem). I have an example with the predict function (http://kuantinglai.blogspot.it/2013/0...) but I don't know how to create the model. Thanks in advance M. |
2017-04-19 03:31:04 -0600 | commented question | CHI2 response in opencv SVM ok thanks @berak, understood |
2017-04-14 08:03:36 -0600 | commented question | CHI2 response in opencv SVM Linux ubuntu 16.04 and opencv3.0 |
2017-04-14 07:56:35 -0600 | commented question | CHI2 response in opencv SVM the problem is in the use of ml::SVM::EPS_SVR instead of ml::SVM::C_SVC |