Fix spelling typos

backport commit 659ffaddb4

modules/imgproc/include/opencv2/imgproc/imgproc_c.h

@@ -1184,7 +1184,7 @@ CVAPI(CvScalar)  cvColorToScalar( double packed_color, int arrtype );
 /** @brief Returns the polygon points which make up the given ellipse.
 
 The ellipse is define by the box of size 'axes' rotated 'angle' around the 'center'. A partial
-sweep of the ellipse arc can be done by spcifying arc_start and arc_end to be something other than
+sweep of the ellipse arc can be done by specifying arc_start and arc_end to be something other than
 0 and 360, respectively. The input array 'pts' must be large enough to hold the result. The total
 number of points stored into 'pts' is returned by this function.
 @see cv::ellipse2Poly

modules/imgproc/src/approx.cpp

@@ -630,7 +630,7 @@ approxPolyDP_( const Point_<T>* src_contour, int count0, Point_<T>* dst_contour,
         WRITE_PT( src_contour[count-1] );
 
     // last stage: do final clean-up of the approximated contour -
-    // remove extra points on the [almost] stright lines.
+    // remove extra points on the [almost] straight lines.
     is_closed = is_closed0;
     count = new_count;
     pos = is_closed ? count - 1 : 0;

modules/imgproc/src/shapedescr.cpp

@@ -776,7 +776,7 @@ cv::RotatedRect cv::fitEllipseDirect( InputArray _points )
 namespace cv
 {
 
-// Calculates bounding rectagnle of a point set or retrieves already calculated
+// Calculates bounding rectangle of a point set or retrieves already calculated
 static Rect pointSetBoundingRect( const Mat& points )
 {
     int npoints = points.checkVector(2);
@@ -1392,7 +1392,7 @@ cvFitEllipse2( const CvArr* array )
     return cvBox2D(cv::fitEllipse(points));
 }
 
-/* Calculates bounding rectagnle of a point set or retrieves already calculated */
+/* Calculates bounding rectangle of a point set or retrieves already calculated */
 CV_IMPL  CvRect
 cvBoundingRect( CvArr* array, int update )
 {

modules/imgproc/test/test_approxpoly.cpp

@@ -325,7 +325,7 @@ void CV_ApproxPolyTest::run( int /*start_from*/ )
             if( DstSeq == NULL )
             {
                 ts->printf( cvtest::TS::LOG,
-                    "cvApproxPoly returned NULL for contour #%d, espilon = %g\n", i, Eps );
+                    "cvApproxPoly returned NULL for contour #%d, epsilon = %g\n", i, Eps );
                 code = cvtest::TS::FAIL_INVALID_OUTPUT;
                 goto _exit_;
             } // if( DstSeq == NULL )

modules/imgproc/test/test_intersection.cpp

@@ -60,7 +60,7 @@ namespace opencv_test { namespace {
 // 6 - partial intersection, rectangle on top of different size
 // 7 - full intersection, rectangle fully enclosed in the other
 // 8 - partial intersection, rectangle corner just touching. point contact
-// 9 - partial intersetion. rectangle side by side, line contact
+// 9 - partial intersection. rectangle side by side, line contact
 
 static void compare(const std::vector<Point2f>& test, const std::vector<Point2f>& target)
 {