CODEWITHSUNDEEP
opencvconstructorinitializationpca
farahm
farahm

Reputation: 1326

OpenCV PCA not initializable

Given http://docs.opencv.org/modules/core/doc/operations_on_arrays.html

PCA should be initializable by just passing it a matrix. 

cv::Mat matrix;
...
//If I do
cv::PCA pca;
pca(matrix);

I get the error, that function cv::PCA::operator() cannot be called with the given arguments

And if I do:

cv::PCA pca(matrix);

it says "no instance of constructor matches the argument list"

And if I do:

pca.operator(matrix);

It says "Error: expected an operator". What is going wrong?

Upvotes: 0

Views: 95

Answers (1)

berak
berak

Reputation: 39806

"PCA should be initializable by just passing it a matrix."

  • no, not true.

there is neither a single-Mat constructor, nor a single-Mat operator().

you have to supply a data-Mat, a mean-Mat and some flags at least.

Upvotes: 1

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