doc: Add type restriction note for geometric transformations

ChristofKaufmann · ChristofKaufmann · commit 9c5b231b2d43 · 2017-12-08T12:33:51.000+01:00
This is added according to opencv#7862.
diff --git a/modules/imgproc/include/opencv2/imgproc.hpp b/modules/imgproc/include/opencv2/imgproc.hpp
@@ -117,6 +117,8 @@ f_y(x,y))\f$, and then the value of the polynomial at \f$(f_x(x,y), f_y(x,y))\f$
 interpolated pixel value. In OpenCV, you can choose between several interpolation methods. See
 resize for details.
 
+@note The geometrical transformations do not work with `CV_8S` or `CV_32S` images.
+
     @defgroup imgproc_misc Miscellaneous Image Transformations
     @defgroup imgproc_draw Drawing Functions
 
