stitcher class using gpu

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stitcher class using gpu

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cv::Stitcher stitcher = Stitcher::createDefault(try_use_gpu);

         ;


         stitcher.setRegistrationResol(0.1);

         stitcher.setSeamEstimationResol(0.1);

         stitcher.setCompositingResol(0.6);

         stitcher.setPanoConfidenceThresh(1);

         stitcher.setWaveCorrection(true);

         stitcher.setWaveCorrectKind(detail::WAVE_CORRECT_VERT);

         stitcher.setFeaturesMatcher(new detail::BestOf2NearestMatcher(false,0.3));
 

 above functions are working as GPU , but why

 

 Stitcher::Status status = stitcher.stitch(input images, output images);
 

 is not working as a GPU.
 

 how to pass these input images as GPUMat... i want to perform these stitcher::stitch as a Parallel process By GPU ...
 

 Can anyone please help me