text: // RGB -> YUV420 conversion
  // Found here: http://code.opencv.org/attachments/1116/rgb_to_yuv420.cpp
  
  #ifndef RGB_TO_YUV420_H
  #define RGB_TO_YUV420_H
  
  void RGB_to_YUV420(const unsigned char * rgb, unsigned char * yuv420, int width, int height);
  
  #endif
  