Open.CV Error Save File

Question

Good morning guys, I have the following code:

var faceImage = new Image<Gray, byte>(new Bitmap(bm));
                imagensFace[i] = faceImage.Resize(100, 100, Inter.Cubic);
                faceLabels[i] = todasFaces[i].ID;
            }
            faceRecognizer.Train(imagensFace, faceLabels);
            faceRecognizer.Save("C:/Temp");

however when passing the part that saves the faceRecognizer is pointed out the following error: Emgu.CV.Util.Cvexception: 'Opencv: File can’t be opened for writing!'

Below is the faceRecognizer statement:

FaceRecognizer faceRecognizer = new EigenFaceRecognizer(80, double.PositiveInfinity);

If anyone can help me I’d appreciate it.

Answer 1

It may be that the library can interpret the / in the file path, but the normal is \.

You can try:

faceRecognizer.Save("C:\\Temp");

or

faceRecognizer.Save("C:\\Users\\User\\Documents\\Emgu\\Teste.yml");

another (most likely) situation is that, as you are saving in C:, the operating system asks for upgrade of privileges, you can resolve this by changing the location where you will save the file, by placing on documents, images, desktop... or elevating the execution of the visual studio, the famous Executar como administrador