Merge pull request #9075 from TonyLianLong:master

Remove unnecessary Non-ASCII characters from source code (#9075)

* Remove unnecessary Non-ASCII characters from source code

Remove unnecessary Non-ASCII characters and replace them with ASCII
characters

* Remove dashes in the @param statement

Remove dashes and place single space in the @param statement to keep
coding style

* misc: more fixes for non-ASCII symbols

* misc: fix non-ASCII symbol in CMake file

modules/features2d/src/brisk.cpp

@@ -745,7 +745,7 @@ BRISK_Impl::computeDescriptorsAndOrOrientation(InputArray _image, InputArray _ma
     int theta;
     if (kp.angle==-1)
     {
-        // don't compute the gradient direction, just assign a rotation of 0°
+        // don't compute the gradient direction, just assign a rotation of 0
         theta = 0;
     }
     else

modules/features2d/src/mser.cpp

@@ -25,7 +25,7 @@
  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  * OF SUCH DAMAGE.
- * Copyright© 2009, Liu Liu All rights reserved.
+ * Copyright (C) 2009, Liu Liu All rights reserved.
  *
  * OpenCV functions for MSER extraction
  *