Python pillow bbox, which is also called bounding box. It is wildely used in pillow. In this tutorial, we will discuss some basic feature of it to help pillow beginners to understand.
Syntax of bbox
In pillow, bbox is a tutple, it contains four elements:
(left, upper, right, lower)
which determine a pixel coordinate of region.
For example:
bbox = ( 200, 100, 300, 400)
which means the size of region is: width = 300 – 200 = 100, height = 400 – 100 = 300.
Meanwhile, we can find:
right >= left
lower >= upper
How to use pillow bbox?
We can set a bbox rigion with a tuple
Meanwhile, we can set bbox = None, it often means the screen size of a computer.