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

doc/tutorials/core/adding_images/adding_images.markdown

@@ -22,7 +22,7 @@ From our previous tutorial, we know already a bit of *Pixel operators*. An inter
 \f[g(x) = (1 - \alpha)f_{0}(x) + \alpha f_{1}(x)\f]
 
 By varying \f$\alpha\f$ from \f$0 \rightarrow 1\f$ 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,
+*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.markdown

@@ -145,7 +145,7 @@ Explanation
             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 RGB value.
         -   The ellipse's **thickness** is 2.
     -   *MyFilledCircle*
         @code{.cpp}

doc/tutorials/core/random_generator_and_text/random_generator_and_text.markdown

@@ -111,7 +111,7 @@ Explanation
         pt1.y = rng.uniform( y_1, y_2 );
         @endcode
         -   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
+            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
@@ -133,7 +133,7 @@ Explanation
             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,
+-#  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:

modules/imgproc/include/opencv2/imgproc.hpp

@@ -3494,7 +3494,7 @@ CV_EXPORTS_W double contourArea( InputArray contour, bool oriented = false );
 
 The function calculates and returns the minimum-area bounding rectangle (possibly rotated) for a
 specified point set. See the OpenCV sample minarea.cpp . Developer should keep in mind that the
-returned rotatedRect can contain negative indices when data is close the the containing Mat element
+returned rotatedRect can contain negative indices when data is close to the containing Mat element
 boundary.
 
 @param points Input vector of 2D points, stored in std::vector\<\> or Mat