How to extract RANSAC's inlier object points from the matrix produced by solvePNPRansac() or findHomography()?

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Hi everyone,

I understand that both solvePNPRansac() and findHomography() produce a matrix correlated to the inlier and outlier keypoints.

Once I get the Mask from the findHomography(), is there a trivial way to correlate the position of the rows in the Mask to the list of matches and the keypoints (like a simple for loop shown below)?

    for (int nextPosition = 0; nextPosition < Mask.height(); ++nextPosition) {
        if(Mask.get(nextPosition,0)[0] > 0.0){              
            inlierList_good_matches.add(List_good_matches.get(nextPosition));
                    inlierList_KeyPoints1.add(List_KeyPoints1.get(nextPosition));
            inlierList_KeyPoints2.add(List_KeyPoints2.get(nextPosition));      
        }            
    }

Thanks in advance!