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/core/include/opencv2/core/persistence.hpp

@@ -474,7 +474,7 @@ template<> CV_EXPORTS void DefaultDeleter<CvFileStorage>::operator ()(CvFileStor
 
 The node is used to store each and every element of the file storage opened for reading. When
 XML/YAML file is read, it is first parsed and stored in the memory as a hierarchical collection of
-nodes. Each node can be a “leaf” that is contain a single number or a string, or be a collection of
+nodes. Each node can be a "leaf" that is contain a single number or a string, or be a collection of
 other nodes. There can be named collections (mappings) where each element has a name and it is
 accessed by a name, and ordered collections (sequences) where elements do not have names but rather
 accessed by index. Type of the file node can be determined using FileNode::type method.

modules/core/include/opencv2/core/utility.hpp

@@ -200,13 +200,13 @@ be called outside of parallel region.
 
 OpenCV will try to run it's functions with specified threads number, but some behaviour differs from
 framework:
--   `TBB` – User-defined parallel constructions will run with the same threads number, if
+-   `TBB` - User-defined parallel constructions will run with the same threads number, if
     another does not specified. If later on user creates own scheduler, OpenCV will use it.
--   `OpenMP` – No special defined behaviour.
--   `Concurrency` – If threads == 1, OpenCV will disable threading optimizations and run it's
+-   `OpenMP` - No special defined behaviour.
+-   `Concurrency` - If threads == 1, OpenCV will disable threading optimizations and run it's
     functions sequentially.
--   `GCD` – Supports only values \<= 0.
--   `C=` – No special defined behaviour.
+-   `GCD` - Supports only values \<= 0.
+-   `C=` - No special defined behaviour.
 @param nthreads Number of threads used by OpenCV.
 @sa getNumThreads, getThreadNum
  */
@@ -217,13 +217,13 @@ CV_EXPORTS_W void setNumThreads(int nthreads);
 Always returns 1 if OpenCV is built without threading support.
 
 The exact meaning of return value depends on the threading framework used by OpenCV library:
-- `TBB` – The number of threads, that OpenCV will try to use for parallel regions. If there is
+- `TBB` - The number of threads, that OpenCV will try to use for parallel regions. If there is
   any tbb::thread_scheduler_init in user code conflicting with OpenCV, then function returns
   default number of threads used by TBB library.
-- `OpenMP` – An upper bound on the number of threads that could be used to form a new team.
-- `Concurrency` – The number of threads, that OpenCV will try to use for parallel regions.
-- `GCD` – Unsupported; returns the GCD thread pool limit (512) for compatibility.
-- `C=` – The number of threads, that OpenCV will try to use for parallel regions, if before
+- `OpenMP` - An upper bound on the number of threads that could be used to form a new team.
+- `Concurrency` - The number of threads, that OpenCV will try to use for parallel regions.
+- `GCD` - Unsupported; returns the GCD thread pool limit (512) for compatibility.
+- `C=` - The number of threads, that OpenCV will try to use for parallel regions, if before
   called setNumThreads with threads \> 0, otherwise returns the number of logical CPUs,
   available for the process.
 @sa setNumThreads, getThreadNum
@@ -234,12 +234,12 @@ CV_EXPORTS_W int getNumThreads();
 returns 0 if called outside of parallel region.
 
 The exact meaning of return value depends on the threading framework used by OpenCV library:
-- `TBB` – Unsupported with current 4.1 TBB release. Maybe will be supported in future.
-- `OpenMP` – The thread number, within the current team, of the calling thread.
-- `Concurrency` – An ID for the virtual processor that the current context is executing on (0
+- `TBB` - Unsupported with current 4.1 TBB release. Maybe will be supported in future.
+- `OpenMP` - The thread number, within the current team, of the calling thread.
+- `Concurrency` - An ID for the virtual processor that the current context is executing on (0
   for master thread and unique number for others, but not necessary 1,2,3,...).
-- `GCD` – System calling thread's ID. Never returns 0 inside parallel region.
-- `C=` – The index of the current parallel task.
+- `GCD` - System calling thread's ID. Never returns 0 inside parallel region.
+- `C=` - The index of the current parallel task.
 @sa setNumThreads, getNumThreads
  */
 CV_EXPORTS_W int getThreadNum();