Error: no member named 'getMat' in 'cv :: face :: FaceRecognizer'

Question

I am using the front face recognition demo from the opencv docs opencv-3.0

to implement this opencv .

I believe this demo was written with opencv-2.4

. However, I added contrib

src to my assembly as recommended in this SO answer .

However, I am now getting the following error:

error: no member named 'getMat' in 'cv::face::FaceRecognizer'

Violation code

Mat eigenvalues = model->FaceRecognizer::getMat("eigenvalues");

I am compiling my code like this

g++ -o facerec_demo facerec_demo.cpp `pkg-config --cflags --libs opencv`

Is there a way to fix this, or is this demo completely incompatible with opencv-3.0

?

+3

Brian vanover Apr 22 15 at 22:08

1 answer

ilke444 · Accepted Answer · 2015-09-18T00:27:15+0000

According to this example , model

the next line is a pointer to an instance of the class FaceRecognizer

instead of the object itself.

129:    Ptr<FaceRecognizer> model = createEigenFaceRecognizer();
        ...
143:    Mat eigenvalues = model->getMat("eigenvalues");

So it makes sense that the function is getMat

not defined in the class FaceRecognizer

, but it must be defined for Ptr<FaceRecognizer>

.