Open CV is one of the most popular computer vision libraries. If you want to start your journey in the field of computer vision then you have to know everything about Open CV.
Open CV sometimes helps to control and manage different types of mouse events and gives us the flexibility to manage them.
Type of Mouse Event :
left button click
right button click
etc. are the Mouse event and to manage these events we need to design callback functions for each type of mouse click event while the window or frame is opened by Open CV.The callback function will be helpful to implement what type of functionality you want with a particular mouse click event.
Basically in Computer Vision there are various library that we can use for implementation basically this lib and function will contain various kind of functionality so here we write a function for that we can check dir of Computer vision.
In Computer Vision there are few thing that we have to show on running screen like current date and time or if we want to show text on screen we can do it via Computer Vision.
Why it is important to show information on Screen ?
For example Suppose we are doing a project related to person or face detection then in this scenario on running screen we want to show a person name or information related to person then in that case we can do it via open CV.