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Hi all, I got the error:

(-215) mat.type() == type() && mat.size == size && func != 0 in function double cv::Mat::dot(cv::InputArray) const

On the code:

Mat vectorCaracteristicas = caracteristicas(rectangulo); double Sumvv = vectorCaracteristicas.dot(vectorCaracteristicas); int nmin = 0; double Sumvd = tabla_caracteristicas.row(nmin).dot(vectorCaracteristicas);

int NUMERO_CLASES = 10; int MUESTRAS_POR_CLASE = 2; int NUMERO_CARACTERISTICAS = 9; tabla_caracteristicas = new Mat(NUMERO_CLASES* MUESTRAS_POR_CLASE, NUMERO_CARACTERISTICAS, CvType.CV_64FC1);

Mat vectorCaracteristicas = caracteristicas(rectangulo)

public Mat caracteristicas(Mat recorteDigito) { Mat chardouble = new Mat(); recorteDigito.convertTo(chardouble, CvType.CV_64FC1); Calculamos vector de caracteristicas Mat digito_3x3 = new Mat(); Imgproc.resize(chardouble, digito_3x3, new Size(3,3), 0, 0, Imgproc.INTER_AREA); digito_3x3 = digito_3x3.t(); return digito_3x3.reshape(1, 1); }

Anyone can explain to me how to solve it?

Thanks in advance!

Hi all, I got the error:

(-215) mat.type() == type() && mat.size == size && func != 0 in function double cv::Mat::dot(cv::InputArray) const

On the code:
code:
  
Mat vectorCaracteristicas = caracteristicas(rectangulo);
double Sumvv =  vectorCaracteristicas.dot(vectorCaracteristicas);
int nmin =  0;
double **double Sumvd  = tabla_caracteristicas.row(nmin).dot(vectorCaracteristicas);tabla_caracteristicas.row(nmin).dot(vectorCaracteristicas);**
 
----------
 
int NUMERO_CLASES = 10;
int MUESTRAS_POR_CLASE =    2;
int NUMERO_CARACTERISTICAS =    9;
tabla_caracteristicas = new Mat(NUMERO_CLASES*  MUESTRAS_POR_CLASE, NUMERO_CARACTERISTICAS, CvType.CV_64FC1);CvType.CV_64FC1);
 
----------
 
Mat vectorCaracteristicas = caracteristicas(rectangulo)caracteristicas(rectangulo)
 
----------
 
public Mat caracteristicas(Mat  recorteDigito)  { 
Mat chardouble = new Mat();
recorteDigito.convertTo(chardouble, CvType.CV_64FC1);
Calculamos  vector  de  caracteristicas
Mat digito_3x3  =   new Mat();
Imgproc.resize(chardouble, digito_3x3, new Size(3,3), 0, 0, Imgproc.INTER_AREA);
digito_3x3  = digito_3x3.t();
return digito_3x3.reshape(1, 1);
}}