opencv_example now in BGR color (opencv convention)

sw/airborne/modules/computer_vision/opencv_example.cpp

@@ -40,18 +40,20 @@ int opencv_example(char *img, int width, int height)
   Mat M(height, width, CV_8UC2, img);
   Mat image;
   // If you want a color image, uncomment this line
-  // cvtColor(M, image, CV_YUV2RGB_Y422);
+   cvtColor(M, image, CV_YUV2BGR_Y422);
   // For a grayscale image, use this one
-  cvtColor(M, image, CV_YUV2GRAY_Y422);
+//  cvtColor(M, image, CV_YUV2GRAY_Y422);
 
   // Blur it, because we can
   blur(image, image, Size(5, 5));
 
   // Canny edges, only works with grayscale image
-  int edgeThresh = 35;
-  Canny(image, image, edgeThresh, edgeThresh * 3);
+//  int edgeThresh = 35;
+//  Canny(image, image, edgeThresh, edgeThresh * 3);
 
   // Convert back to YUV422, and put it in place of the original image
-  grayscale_opencv_to_yuv422(image, img, width, height);
+//  grayscale_opencv_to_yuv422(image, img, width, height);
+  color_opencv_to_yuv422(image, img, width, height);
+
   return 0;
 }