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ubuntu（双系统、虚拟机）+opencv打开摄像头，出现以下等错误： error: (-2:Unspecified error) The function is not
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左手的ㄟ右手相关 cv2.error: OpenCV(3.4.2) error: (-215:Assertion failed) !empty() in function ‘detectMultiScale‘
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1.图片加载、显示和保存 ![复制代码][copycode.gif] import cv2 生成图片 img = cv2.imread("1.
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运行环境：python 3.6.0 初学 opencv，看着程序跟书本都一样啊，突然报了以下错误 Traceback (most recent call last)
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