update samples: waitKey() usage

Original commit is a5f19f7dd6
2026-07-30 15:53:03 +04:00 · 2016-08-12 15:11:30 +02:00
parent 4e7b521438
commit 6d34d6b47e
76 changed files with 142 additions and 154 deletions
@@ -93,6 +93,7 @@ Let's check the general structure of the program:

 -   Perform an infinite loop waiting for user input.
    @snippet cpp/tutorial_code/ImgProc/Pyramids.cpp infinite_loop
+
    Our program exits if the user presses *ESC*. Besides, it has two options:

    -   **Perform upsampling (after pressing 'u')**