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	<title>白纸 - 四号程序员</title>
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		<title>用opencv检查是否为白纸</title>
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					<description><![CDATA[def check_blank_image(file): img = cv2.imread(file) if img is None: return False # grary img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) # threshold to two value image ret,thresh = cv2.threshold(img, 150, 255,cv2.THRESH_BINARY)[......] 继续阅读]]></description>
		
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