Merge two Haar Cascade tutorials (#14674)
* move haar cascade introduction, add code explanation, mark content as moved
* switch to ref for include to provide correct breadcrumb navigation
Extend optical flow tutorial (#14314)
* extend python optical flow tutorial with cpp example code and add it to general tutorial directory
* remove unused parameters, fix comparison between signed and unsigned int
* fix hsv range problem
* switch to samples::findFile for sample file location
* switch to command line parameter for path
* remove old tutorial as in 14393
* minor fixes
Extend meanshift tutorial (#14393)
* copy original tutorial and python code
* add cpp code, fix python code
* add camshift cpp code, fix bug in meanshift code
* add description to ToC page
* fix shadowing previous local declaration
* fix grammar: with -> within
* docs: remove content of old py_meanshift tutorial, add link
* docs: replace meanshift tutorial subpage in Python tutorials
* switch to ref to fix wrong breadcrumb navigation
* switch to cmdline for path as in #14314
* Apply suggestions from code review
* order programming languages alphabetically
For some mysterious (for me) reason, two lines of the code appears in my browser (Chrome) in the same line.
I've add an "enter" (just pressed enter), but don't know if it's the best solution.
Improved readability by correcting grammar and idioms.
Further improved language and readability.
Attempted to fix list bullets.
Again, attempted to fix list bullets.
Removed trailing whitespace on line 8.
Correct a mistake in {js,py}_table_of_contents_histograms.markdown (#11260)
* Update py_table_of_contents_histograms.markdown
"Learn to find and draw Contours" => "Learn the basics of histograms"
* Update js_table_of_contents_histograms.markdown
Corrected a seemlingly wronged line of copy in the python documention js_table_of_contents_histograms.markdown
"Learn to find and draw Contours" => "Learn the basics of histograms"
