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当我使用Matrix类型的getCols()方法时,我发现了一个问题。 Check this piece:emgu Matrix <float> .getCols
让我们假设orig的大小是[1000,384],numFeat = 50;
private Matrix<float> ComputePCA(Matrix<float> orig, int numFeat)
{
Matrix<float> avg = new Matrix<float>(1, orig.Cols);
Matrix<float> eigval = new Matrix<float>(orig.Cols, 1);
Matrix<float> eigvec = new Matrix<float>(orig.Cols, orig.Cols);
Matrix<float> featMat = new Matrix<float>(orig.Rows, numFeat);
CvInvoke.cvCalcPCA(masterMat, avg, eigval, eigvec, Emgu.CV.CvEnum.PCA_TYPE.CV_PCA_DATA_AS_ROW);
Matrix<float> choosenAutovec = new Matrix<float>(orig.Cols, numFeat);
choosenAutovec = eigvec.GetCols(0, numFeat - 1);
featMat = choosenAutovec.Transpose() * orig.Transpose();
return featMat.Transpose();
}
eigvec.GetCols我想有大小的可变choosenAutovec [384,50]右后
?但是我得到一个矩阵[384,384],而不是...任何建议只采取前50列?
谢谢。