Maximizing performance of CV_BGRA2GRAY conversion using NEON and cv::parallel_for
I continue playing with powerful NEON engine in iPhone and iPad devices. Recently i bought iPhone 4S that replaced my HTC Mozart and i decided to check how to speed up BGRA to GRAY color conversion procedure using multithreading.
Recently Itseez announced a minor release of OpenCV 2.4.3 with a lot of new major features:
Added universal parallel_for implementation using various backends: TBB, OpenMP, GCD, Concurrency Improved OpenCV Manager, new Java samples framework, better camera support on Android, opencv2.