MSER Features with SURF Descriptor Bug (Bug #423)

Hi,

i am working in image processing with OpenCV (trunk Version 3268) and extracted some MSER features from a image.
Now i want to compute from these keypoints a surf descriptor but i get an error in descriptors.cpp at line 205 (void SurfDescriptorExtractor::compute)

assert( (int)_descriptors.size() == descriptors.rows * descriptors.cols );

The reason for the problem is in the "surf" function two lines before.
There are some lines to delete some keypoints (in file surf.cpp line 771 to 783).

/* remove keypoints that were marked for deletion */
for ( i = 0; i < N; i++ ) {
CvSURFPoint* kp = (CvSURFPoint*)cvGetSeqElem( keypoints, i );
if ( kp->size == -1 ) {
cvSeqRemove( keypoints, i );
if ( _descriptors )
cvSeqRemove( descriptors, i );
i--;
N--;
}
}

This is okay but one line before the assert fuction a new output matrix is created from the keypoints and the descriptor size. Then the assert function check the matrix size between the new created matrix and the calculated matrix size. But they are different because some keypoints in the calculated matrix are deleted and i get the error.