image stitching - Can someone explain the parameters of OpenCV Stitcher? -

i'm trying reduce calculation time of stitching algorithm. got images want stitch in defined order seems cv::stitcher.stitch() function tries stitch every image every other image.

i feel might find solution in parameters of opencv stitcher. if not maybe have modify function or try else reduce calculation time. since i'm pretty beginner, don't know how. know using gpu might possibility don't cuda running on ubuntu @ moment.

it great if give me advice!

parameters opencv stitcher module:

stitcher stitcher::createdefault(bool try_use_gpu) { stitcher stitcher; stitcher.setregistrationresol(0.6); stitcher.setseamestimationresol(0.1);        stitcher.setcompositingresol(orig_resol);     stitcher.setpanoconfidencethresh(1);     stitcher.setwavecorrection(true);     stitcher.setwavecorrectkind(detail::wave_correct_horiz);     stitcher.setfeaturesmatcher(new detail::bestof2nearestmatcher(try_use_gpu)); stitcher.setbundleadjuster(new detail::bundleadjusterray()); 

from stitcher.cpp:

https://code.ros.org/trac/opencv/browser/trunk/opencv/modules/stitching/src/stitcher.cpp?rev=7244