message: Added typedefs for Image1f and Image3f
  These are used for the CNN detectors.
diff: @@ -116,10 +116,12 @@ private:
  };
  };
  -// Some common typedefs:
  +// Define type aliases for the most commonly used image types:
  using Image1u = Image<std::uint8_t>;
  using Image3u = Image<Pixel<std::uint8_t, 3>>;
  using Image4u = Image<Pixel<std::uint8_t, 4>>;
  +using Image1f = Image<float>;
  +using Image3f = Image<Pixel<float, 3>>;
  using Image1d = Image<double>;
  } /* namespace core */
  