File "D:\Code\GhostFaceNets\facenet-retinaface-pytorch-main\retinaface.py", line 460, in detect_image
cv2.rectangle(old_image, (b[0], b[1]), (b[2], b[3]), (0, 0, 255), 2)
cv2.error: OpenCV(4.9.0) :-1: error: (-5:Bad argument) in function 'rectangle'
> Overload resolution failed:
> - img marked as output argument, but provided NumPy array marked as readonly
> - Expected Ptr<cv::UMat> for argument 'img'
> - img marked as output argument, but provided NumPy array marked as readonly
> - Expected Ptr<cv::UMat> for argument 'img'
cv2.rectangle(old_image, (b[0], b[1]), (b[2], b[3]), (0, 0, 255), 2)在调试facenet+retinaface时，检测一张图像中多张人脸时出现以上问题。在网上搜了很多，最终选择询问李博士。
解决方法：文章来源：https://www.toymoban.com/news/detail-822654.html
old_image = np.int32(old_image)
cv2.rectangle(old_image, (b[0], b[1]), (b[2], b[3]), (0, 0, 255), 2)成功解决。文章来源地址https://www.toymoban.com/news/detail-822654.html
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