Fix typo

Fixed difference in the given arguments to the ellipse function and the description after that

Fixed two more typos

Replaced unnecessary the with to

Conflicts:
	doc/tutorials/core/adding_images/adding_images.markdown
	doc/tutorials/core/basic_geometric_drawing/basic_geometric_drawing.markdown
	doc/tutorials/core/random_generator_and_text/random_generator_and_text.markdown
	modules/imgproc/include/opencv2/imgproc.hpp

doc/tutorials/core/adding_images/adding_images.rst

@@ -26,7 +26,7 @@ From our previous tutorial, we know already a bit of *Pixel operators*. An inter
 
    g(x) = (1 - \alpha)f_{0}(x) + \alpha f_{1}(x)
 
-By varying :math:`\alpha` from :math:`0 \rightarrow 1` this operator can be used to perform a temporal *cross-disolve* between two images or videos, as seen in slide shows and film productions (cool, eh?)
+By varying :math:`\alpha` from :math:`0 \rightarrow 1` this operator can be used to perform a temporal *cross-dissolve* between two images or videos, as seen in slide shows and film productions (cool, eh?)
 
 Code
 =====

doc/tutorials/core/basic_geometric_drawing/basic_geometric_drawing.rst

@@ -167,7 +167,7 @@ Explanation
         * The ellipse center is located in the point **(w/2.0, w/2.0)** and is enclosed in a box of size **(w/4.0, w/16.0)**
         * The ellipse is rotated **angle** degrees
         * The ellipse extends an arc between **0** and **360** degrees
-        * The color of the figure will be **Scalar( 255, 255, 0)** which means blue in RGB value.
+        * The color of the figure will be **Scalar( 255, 0, 0)** which means blue in BGR value.
         * The ellipse's **thickness** is 2.
 
 

doc/tutorials/core/random_generator_and_text/random_generator_and_text.rst

@@ -116,7 +116,7 @@ Explanation
         pt1.x = rng.uniform( x_1, x_2 );
         pt1.y = rng.uniform( y_1, y_2 );
 
-     * We know that **rng** is a *Random number generator* object. In the code above we are calling **rng.uniform(a,b)**. This generates a radombly uniformed distribution between the values **a** and **b** (inclusive in **a**, exclusive in **b**).
+     * We know that **rng** is a *Random number generator* object. In the code above we are calling **rng.uniform(a,b)**. This generates a randomly uniformed distribution between the values **a** and **b** (inclusive in **a**, exclusive in **b**).
 
      * From the explanation above, we deduce that the extremes *pt1* and *pt2* will be random values, so the lines positions will be quite impredictable, giving a nice visual effect (check out the Result section below).
 
@@ -138,7 +138,7 @@ Explanation
 
        As we can see, the return value is an *Scalar* with 3 randomly initialized values, which are used as the *R*, *G* and *B* parameters for the line color. Hence, the color of the lines will be random too!
 
-#. The explanation above applies for the other functions generating circles, ellipses, polygones, etc. The parameters such as *center* and *vertices* are also generated randomly.
+#. The explanation above applies for the other functions generating circles, ellipses, polygons, etc. The parameters such as *center* and *vertices* are also generated randomly.
 
 #. Before finishing, we also should take a look at the functions *Display_Random_Text* and *Displaying_Big_End*, since they both have a few interesting features: