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File size: 779 Bytes
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import threading
import cv2
buffer = []
def worker():
global buffer
while True:
cv2.waitKey(50)
try:
if len(buffer) > 0:
task = buffer.pop(0)
if task is None:
cv2.destroyAllWindows()
else:
flag, img, title = task
cv2.imshow(flag, img)
cv2.setWindowTitle(flag, title)
cv2.setWindowProperty(flag, cv2.WND_PROP_TOPMOST, 1)
except Exception as e:
print(e)
pass
def show_preview(flag, img, title='preview'):
buffer.append((flag, img[..., ::-1].copy(), title))
def close_all_preview():
buffer.append(None)
threading.Thread(target=worker, daemon=True).start()
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