Simple operations over bounding boxes. The package provides a class Boxes encapsulating a set of bounding boxes. Internally, the boxes are represented in an Nx4 matrix with x1,y1,x2,y2 coordinates. Instances of Boxes support arbitraty user-defined fields which can hold other properties of boxes like e.g. score.

import bbx

B = bbx.Boxes([0,0,10,10])  # New instance
B.set_field("score", [1])  # Set the field
B.width()  # [10]
C = bbx.resize(B, 2)  # Resize and make new instance
C.get() # [[-5,-5,15,15]]
C.get_field("score")  # [1]
C.area()  # [400]

... for the glory of s... But seriously, I use bounding boxes in every other project and there is no decent small package for this. Yes I can use TF obj detection api (and I did for a while, this pkg have similar interface to it) or structures from imgaug or others. I did not find anything that suits my needs (if you know about something just let me know). You either install a big non-standard package with tons of functionality you do not need or you implement it by yourself. So I decided to make a very small package that does precisely what I need and nothing more, is portable (just numpy needed, and you already have it!).

Yes, I just implemented a non-standard package, so I so not need to use other non-standard packages... yes, I know...

The package is in PyPI so just use pip

pip install bbx

Feelin' brave? Contribute with code! You can also submit an issue if something is broken.

This code is published under MIT License