opencv/opencv_contrib
1
0
Fork 0
mirror of https://github.com/opencv/opencv_contrib.git synced 2025-10-18 17:24:28 +08:00
Code Issues Releases Wiki Activity

Computing eigenvectors with cv::eigen(). Infinitely faster since it works.

Browse Source
This commit is contained in:
felix
2015-06-20 12:31:11 -04:00
parent b378236317
commit 595c6b2176
1 changed files with 19 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
modules/surface_matching/src/ppf_helpers.cpp
View File

@@ -716,7 +716,25 @@ CV_EXPORTS int computeNormalsPC3d(const Mat& PC, Mat& PCNormals, const int NumNe
meanCovLocalPCInd(dataset, indLocal, 3, NumNeighbors, C, mu);
// eigenvectors of covariance matrix
eigenLowest33(C, nr);
Mat cov(3, 3, CV_64F), eigVect, eigVal;
double* covData = (double*)cov.data;
covData[0] = C[0][0];
covData[1] = C[0][1];
covData[2] = C[0][2];
covData[3] = C[1][0];
covData[4] = C[1][1];
covData[5] = C[1][2];
covData[6] = C[2][0];
covData[7] = C[2][1];
covData[8] = C[2][2];
eigen(cov, eigVal, eigVect);
Mat lowestEigVec;
//the eigenvector for the lowest eigenvalue is in the last row
eigVect.row(eigVect.rows - 1).copyTo(lowestEigVec);
double* eigData = (double*)lowestEigVec.data;
nr[0] = eigData[0];
nr[1] = eigData[1];
nr[2] = eigData[2];
pcr[0] = pci[0];
pcr[1] = pci[1];