Opencv 遇到一个很奇怪的问题, mac 上获取摄像头图片,必须需要 sleep 一下, 0.1 都可以,但是不给就是黑图,代码如下,有没有大佬指点一下 - V2EX
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Jinkeup
V2EX    OpenCV

Opencv 遇到一个很奇怪的问题, mac 上获取摄像头图片,必须需要 sleep 一下, 0.1 都可以,但是不给就是黑图,代码如下,有没有大佬指点一下

  •  
  •   Jinkeup 2024-04-15 16:44:35 +08:00 1509 次点击
    这是一个创建于 594 天前的主题,其中的信息可能已经有所发展或是发生改变。

    def capture_photo(): # 打开摄像头 cap = cv2.VideoCapture(0)

    # 检查摄像头是否打开成功 if not cap.isOpened(): raise Exception("Failed to open camera") # 图片为黑,必须 sleep 一下!!! sleep(0.1) # 读取一帧图像 ret, frame = cap.read() # 检查图像是否读取成功 if not ret: raise Exception("Failed to capture frame") # 释放摄像头 cap.release() # 保存图像到当前目录 cv2.imwrite("captured_photo.jpg", frame) return "Photo captured successfully" 
    1 条回复    2024-04-17 09:51:27 +08:00
    kyonn
        1
    kyonn  
       2024-04-17 09:51:27 +08:00 via Android
    不休眠多读几帧试下,看下是第几帧图像正常了
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