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Fixed reconstruction, so that the mean is correctly added to the reconstructed image.

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This commit is contained in:
Philipp Wagner 2012-05-31 20:27:46 +00:00
parent 2ee917c646
commit 0bd287a8f2
1 changed files with 4 additions and 9 deletions
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13
modules/contrib/src/lda.cpp
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@ -185,21 +185,16 @@ Mat subspaceReconstruct(InputArray _W, InputArray _mean, InputArray _src)
Mat W = _W.getMat();
Mat mean = _mean.getMat();
Mat src = _src.getMat();
// get number of samples and dimension
// get number of samples
int n = src.rows;
int d = src.cols;
// initalize temporary matrices
Mat X, Y;
// copy data & make sure we are using the correct type
src.convertTo(Y, W.type());
// calculate the reconstruction
gemm(Y,
W,
1.0,
((size_t)d == mean.total()) ? repeat(mean.reshape(1,1), n, 1) : Mat(),
((size_t)d == mean.total()) ? 1.0 : 0.0,
X,
GEMM_2_T);
gemm(Y, W, 1.0, Mat(), 0.0, X, GEMM_2_T);
if(mean.total() == (size_t) X.cols)
add(X, repeat(mean.reshape(1,1), n, 1), X);
return X;
}