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# Ultralytics YOLO 🚀, AGPL-3.0 license
"""
Monkey patches to update/extend functionality of existing functions
"""
from pathlib import Path
import cv2
import numpy as np
import torch
# OpenCV Multilanguage-friendly functions ------------------------------------------------------------------------------
_imshow = cv2.imshow # copy to avoid recursion errors
def imread(filename, flags=cv2.IMREAD_COLOR):
return cv2.imdecode(np.fromfile(filename, np.uint8), flags)
def imwrite(filename, img):
try:
cv2.imencode(Path(filename).suffix, img)[1].tofile(filename)
return True
except Exception:
return False
def imshow(path, im):
_imshow(path.encode('unicode_escape').decode(), im)
# PyTorch functions ----------------------------------------------------------------------------------------------------
_torch_save = torch.save # copy to avoid recursion errors
def torch_save(*args, **kwargs):
"""Use dill (if exists) to serialize the lambda functions where pickle does not do this."""
try:
import dill as pickle
except ImportError:
import pickle
if 'pickle_module' not in kwargs:
kwargs['pickle_module'] = pickle
return _torch_save(*args, **kwargs)
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