Bugs of eigenvalues and eigenvectors order #50
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In the previous version like 3feae58, the OpenCV's
cv::eigenwas used, which returned eigenvalues in decreasing order. However, the current version d146f4b uses Eigen'sEigen::SelfAdjointEigenSolver, which returns the results in increasing order.This will cause matD1(0, 0) > 3 * matD1(0, 1) never happens. The corresponding eigenvector for line directions should also be changed.