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python-----從本地攝像頭和網(wǎng)絡(luò)攝像頭截取圖片 ,具體代碼如下所示:

import cv2
# 獲取本地攝像頭
# folder_path 截取圖片的存儲目錄
def get_img_from_camera_local(folder_path):
cap = cv2.VideoCapture(0)
i = 1
while True:
ret, frame = cap.read()
cv2.imshow("capture", frame)
print str(i)
cv2.imwrite(folder_path + str(i) + '.jpg', frame) # 存儲為圖像
if cv2.waitKey(1) & 0xFF == ord('q'):
break
i += 1
cap.release()
cv2.destroyAllWindows()
# 獲取網(wǎng)絡(luò)攝像頭,格式:rtsp://username:pwd@ip/
# folder_path 截取圖片的存儲目錄
def get_img_from_camera_net(folder_path):
cap = cv2.VideoCapture('rtsp://username:pwd@ip/')
i = 1
while True:
ret, frame = cap.read()
cv2.imshow("capture", frame)
print str(i)
cv2.imwrite(folder_path + str(i) + '.jpg', frame) # 存儲為圖像
if cv2.waitKey(1) & 0xFF == ord('q'):
break
i += 1
cap.release()
cv2.destroyAllWindows()
# 測試
if __name__ == '__main__':
folder_path = 'D:\\img_from_camera\\'
get_img_from_camera_local(folder_path)