import cv2
import numpy as np

data = np.array([
    [
        282,
        316
    ],
    [
        2593,
        316
    ],
    [
        2593,
        3601
    ],
    [
        282,
        3601
    ]
])

ix, iy, iw, ih = cv2.boundingRect(data)


def get_box_corners(x, y, w, h):
    return [[x, y], [x + w, y], [x + w, y + h], [x, y + h]]


print(ix, iy, iw, ih)
inner_box_corners_int = get_box_corners(ix, iy, iw, ih)
print(inner_box_corners_int)