But I see this document, https://docs.opencv.org/3.4.0/d4/d48/...
What's the read truth, I searched for word "lbph" or "recognizer", it can't be found in the sources
if was NOT removed,, where it was?
alternatively, you could use opencv's new dnn module with a pretrained FaceNet model for face recognition:
dnn::Net net = dnn::readNetFromTorch("openface.nn4.small2.v1.t7");
// https://raw.githubusercontent.com/pyannote/pyannote-data/master/openface.nn4.small2.v1.t7
Mat inputBlob = dnn::blobFromImage(image, 1./255, Size(96,96), Scalar(), true, false);
net.setInput(inputBlob);
Mat feature = net.forward().clone();
careful here, the output of net.forward() points to the last (internal) network blob, so we need a clone() to get distinctive results !
then, use those 128 float feature vectors, to simply compare images :
double distance = norm(feature1, feature2);
or, train your favourite ml or clustering algorithm using those.
"better" always depends on your context, but here are some pro's:
and some con's:
do you have a binary application that I can test?
you can use color images and in opencv facerecognizer(lbph,eigen,fisher) can used colored image too but you have to convert it to grayscale before training and prediction,
large classifier (~30mb) apart from your own data large classifier is just fine, as long it's more accurate than lbph,
you have to write your own code. there is no boiler-plate code, apart from the above. the problem is maybe it doesn't tell if the face is "unknown" or has name, that's the worst of all, programming is not magic
and which do you think it's better? the new openface by opencv or this?
Asked: 2018-01-26 19:04:40 -0600
Seen: 2,685 times
Last updated: Jan 28 '18
BUT IF FaceRecognizer was removed from Opencv3.4.0 why when I used SharpOpenCv why still it was there? Confusing...
problem solved, I included the /modules/contrib(of opencv24.13.5) folder to /modules(of opencv3.4.0), and build a x86 dlls and libs :D then going to use it for my c++ builder experiments along with dll wrappers.
but I'm interested to see how DNN is accurately good for face recognition as @berak and @phillity suggestions,
thank you Masters, so grateful that you replied :D
oh men, contrib dll was not compiled, tsk..tsk..
error this is a compatibility header which should not be used inside the OpenCV library
lol