Adding Shapes
Explore how to draw basic shapes such as circles, rectangles, and lines on images using OpenCV in C++. Learn the parameters and functions required to highlight image regions and customize shapes for better image editing.
We'll cover the following...
We'll cover the following...
What if we want to put a certain shape, such as a rectangle, around a specific portion of an image to draw the viewer’s attention? It’ll take a very long time to add those borders to a large number of images. But we have a better idea: we’ll use OpenCV to draw the required shapes on those images.
In this lesson, we’ll draw different shapes in the code widgets below.
Drawing a circle
To draw a circle, we’ll use the circle() function of the OpenCV library. We’ll have five parameters inside this function.
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