How this Python Numpy ndarray slicing is working?

Question

I wish to understand a piece of code that I have seen in python.

in my particular case, face is a list and when the code is executed x is 739 y is 229 w is 232 h is 349

image is a numpy.ndarray, I wanted to understand how the slicing of image is acctually working... which part of the image is acctually being selected?

I cant understand how the slicing is working

No images of code. Please post code as [formatted text](/help/formatting). — Pranav Hosangadi, Nov 23 '22 at 15:09
Slicing syntax in numpy is identical to regular python slicing. What is your confusion? — Pranav Hosangadi, Nov 23 '22 at 15:10
It gets a smaller area of the image, from rows 229 to 578 and in those rows, columns 739 to 971 — Tom McLean, Nov 23 '22 at 15:10

score 0 · Answer 1 · answered Nov 23 '22 at 15:13

To slice a multi-dimensional array, you specify a standard slicing range (with up to 3 arguments seperated by :) for each dimension, and seperate the ranges with a ,.

In this example, the array is sliced in the range of y up to y + h on one dimension, and x to x + w on the other.

read this if for more examples

How this Python Numpy ndarray slicing is working?

1 Answers1