title: Optimization of OpenCV on android (neon-instruction, GLSL on tegra 3 )
body: <p>I am now using some OpenCV functions in my Android application development. Since the frame rate is quite critical for the program, I am wondering how could I enable the optimization of OpenCV on android, since I have read about the newest version (2.4) of OpenCV use neon-instruction and GLSL for acceleration, is it automatically enabled? Or anything I need to put in the Android.mk file for compiling? 
  (P.S. the Opencv Manager on android automatically download the "OCV 2.4 pack NVIDIA Tegra 3" alr)</p>