本文主要是介绍海康多相机同步取流保存图片，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
话不多说，直接上代码。代码里包含了多窗口显示图像和保存图片。
#"rtsp://admin:123456qq@192.168.10.192/stream1"
# rtsp://admin:Admin123@192.168.100.103:554/Streaming/Channels/101
#rtsp://admin:Admin123@192.168.100.103:554/cam/realmonitor?channel=1&subtype=0import time
import multiprocessing as mp
import cv2
import os"""
Source: Yonv1943 2018-06-17
https://github.com/Yonv1943/Python
https://zhuanlan.zhihu.com/p/38136322
OpenCV official demo
https://docs.opencv.org/3.0-beta/doc/py_tutorials/py_gui/py_video_display/py_video_display.html
海康、大华IpCamera RTSP地址和格式（原创，旧版）- 2014年08月12日 23:01:18 xiejiashu
rtsp_path_hikvison = "rtsp://%s:%s@%s/h265/ch%s/main/av_stream" % (user, pwd, ip, channel)
rtsp_path_dahua = "rtsp://%s:%s@%s/cam/realmonitor?channel=%d&subtype=0" % (user, pwd, ip, channel)
https://blog.csdn.net/xiejiashu/article/details/38523437
最新（2017）海康摄像机、NVR、流媒体服务器、回放取流RTSP地址规则说明 - 2017年05月13日 10:51:46 xiejiashu
rtsp_path_hikvison = "rtsp://%s:%s@%s//Streaming/Channels/%d" % (user, pwd, ip, channel)
https://blog.csdn.net/xiejiashu/article/details/71786187
"""def image_put(q, user, pwd, ip, channel=1):# cap = cv2.VideoCapture("rtsp://%s:%s@%s/stream1" % (user, pwd, ip))# cap = cv2.VideoCapture("rtsp://%s:%s@%sStreaming/Channels/1701?transportmode=unicast" % (user, pwd, ip))# if cap.isOpened():# print('HIKVISION')# else:# cap = cv2.VideoCapture("rtsp://%s:%s@%s/cam/realmonitor?channel=%d&subtype=0" % (user, pwd, ip, channel))# print('DaHua')cap = cv2.VideoCapture("rtsp://%s:%s@%s/cam/realmonitor?channel=%d&subtype=0" % (user, pwd, ip, channel))if cap.isOpened():print('HIKVISION')else:cap = cv2.VideoCapture("rtsp://admin:123456qq@192.168.100.12/stream1")print('Genius')while True:q.put(cap.read()[1])q.get() if q.qsize() > 1 else time.sleep(0.01)def run_opencv_camera():user, pwd, ip, channel = "admin", "123456qq", "33.90.7.110", 1cap_path = 0 # local camera (e.g. the front camera of laptop)# cap_path = 'video.avi' # the path of video file# cap_path = "rtsp://%s:%s@%s/h264/ch%s/main/av_stream" % (user, pwd, ip, channel) # HIKIVISION old version 2015# cap_path = "rtsp://%s:%s@%s//Streaming/Channels/%d" % (user, pwd, ip, channel) # HIKIVISION new version 2017# cap_path = "rtsp://%s:%s@%s/cam/realmonitor?channel=%d&subtype=0" % (user, pwd, ip, channel) # dahuacap = cv2.VideoCapture(cap_path)while cap.isOpened():is_opened, frame = cap.read()cv2.imshow('frame', frame)cv2.waitKey(1000)cap.release()def image_get_s(queue_list, ip, img_path):"""show in single opencv-imshow window"""window_name1 = "%s" % ip[0]window_name2 = "%s" % ip[1]window_name3 = "%s" % ip[2]# window_name4 = "%s" % ip[3]idx_img = 0cv2.namedWindow(window_name1, flags=cv2.WINDOW_FREERATIO)cv2.namedWindow(window_name2, flags=cv2.WINDOW_FREERATIO)cv2.namedWindow(window_name3, flags=cv2.WINDOW_FREERATIO)# cv2.namedWindow(window_name4, flags=cv2.WINDOW_FREERATIO)while True:imgs = [q.get() for q in queue_list]img1 = imgs[0]img2 = imgs[1]img3 = imgs[2]# img4 = imgs[3]img1_tmp = cv2.resize(img1, (int(1920/2 ), int(1080/2 )))img2_tmp = cv2.resize(img2, (int(1920/2 ), int(1080/2 )))img3_tmp = cv2.resize(img3, (int(1920 / 2), int(1080 / 2)))# img4_tmp = cv2.resize(img4, (int(1920 / 2), int(1080 / 2)))cv2.imshow(window_name1, img1_tmp)cv2.imshow(window_name2, img2_tmp)cv2.imshow(window_name3, img3_tmp)# cv2.imshow(window_name4, img4_tmp)# imgs = np.concatenate(imgs, axis=1)# cv2.imshow(window_name, imgs)key = cv2.waitKey(1)if key == ord('s'):img_path0 = os.path.join(img_path[0], str(idx_img) + '.jpg')cv2.imwrite(img_path0, img1)img_path1 = os.path.join(img_path[1], str(idx_img) + '.jpg')cv2.imwrite(img_path1, img2)img_path2 = os.path.join(img_path[2], str(idx_img) + '.jpg')cv2.imwrite(img_path2, img3)# img_path3 = os.path.join(img_path[3], str(idx_img) + '.jpg')# cv2.imwrite(img_path3, img3)# idx_img += 1def image_get_all(queue_list, ip, img_path):"""show in single opencv-imshow window"""window_name1 = "%s" % ip[0]window_name2 = "%s" % ip[1]# window_name3 = "%s" % ip[2]# window_name4 = "%s" % ip[3]idx_img = 0cv2.namedWindow(window_name1, flags=cv2.WINDOW_FREERATIO)cv2.namedWindow(window_name2, flags=cv2.WINDOW_FREERATIO)# cv2.namedWindow(window_name3, flags=cv2.WINDOW_FREERATIO)# cv2.namedWindow(window_name4, flags=cv2.WINDOW_FREERATIO)while True:imgs = [q.get() for q in queue_list]img1 = imgs[0]img2 = imgs[1]# img3 = imgs[2]# img4 = imgs[3]img1_tmp = cv2.resize(img1, (int(1920/2 ), int(1080/2 )))img2_tmp = cv2.resize(img2, (int(1920/2 ), int(1080/2 )))# img3_tmp = cv2.resize(img3, (int(1920/4), int(1080/ 4)))# img4_tmp = cv2.resize(img4, (int(1920 / 4), int(1080 / 4)))# print('11',len(img1_tmp))cv2.imshow(window_name1, img1_tmp)cv2.imshow(window_name2, img2_tmp)# cv2.imshow(window_name3, img3_tmp)# cv2.imshow(window_name4, img4_tmp)# imgs = np.concatenate(imgs, axis=1)# cv2.imshow(window_name, imgs)cv2.waitKey(1)cv2.imwrite(img_path[0]+str(idx_img)+'.jpg', img1)cv2.imwrite(img_path[1]+str(idx_img)+'.jpg', img2)# cv2.imwrite(img_path[2]+str(idx_img)+'.jpg', img3)# cv2.imwrite(img_path[3]+str(idx_img) +'.jpg',img4)idx_img +=1def run_single_camera():# user_name, user_pwd, camera_ip = "admin", "admin123456", "172.20.114.196"# user_name, user_pwd, camera_ip = "admin", "Admin123", "192.168.100.103:554"user_name, user_pwd, camera_ip = "admin", "Admin123", "192.168.100.100:554"mp.set_start_method(method='spawn') # initqueue = mp.Queue(maxsize=2)processes = [mp.Process(target=image_put, args=(queue, user_name, user_pwd, camera_ip)),mp.Process(target=image_get_s, args=(queue, camera_ip))][process.start() for process in processes][process.join() for process in processes]def run_multi_camera():user_name, user_pwd = "admin", "Admin123"camera_ip_l = [# "172.20.114.196", # ipv4# "[fe80::3aaf:29ff:fed3:d260]", # ipv6# "192.168.100.180:554",# "192.168.100.182:554","192.168.100.181:554","192.168.100.184:554",]mp.set_start_method(method='spawn') # initqueues = [mp.Queue(maxsize=len(camera_ip_l)) for _ in camera_ip_l]imgs_path = []for i in range(len(camera_ip_l)):imgs_path.append("E:/dataset_0902/images/{}/".format(camera_ip_l[i].split('.')[-1].split(':')[0]))if not os.path.exists(imgs_path[-1]):os.makedirs(imgs_path[-1])processes = [mp.Process(target=image_get_all, args=(queues, camera_ip_l, imgs_path))]for queue, camera_ip, img_path in zip(queues, camera_ip_l, imgs_path):processes.append(mp.Process(target=image_put, args=(queue, user_name, user_pwd, camera_ip)))for process in processes:process.daemon = Trueprocess.start()for process in processes:process.join()# p.join()def image_collect(queue_list, camera_ip_l):import numpy as np"""show in single opencv-imshow window"""window_name1 = "%s_and_so_no" % camera_ip_l[0]window_name2 = "%s_and_so_no" % camera_ip_l[1]cv2.namedWindow(window_name1, flags=cv2.WINDOW_FREERATIO)cv2.namedWindow(window_name2, flags=cv2.WINDOW_FREERATIO)while True:imgs = [q.get() for q in queue_list]img1 = imgs[0]img2 = imgs[1]# cv2.imshow(window_name1, img1)# cv2.imshow(window_name2, img2)img1_tmp = cv2.resize(img1, (int(1920 / 2), int(1080 / 2)))img2_tmp = cv2.resize(img2, (int(1920 / 2), int(1080 / 2)))cv2.imshow(window_name1, img1_tmp)cv2.imshow(window_name2, img2_tmp)# imgs = np.concatenate(imgs, axis=1)# cv2.imshow(window_name, imgs)cv2.waitKey(1)# if key == ord('s'):# img_path = os.path.join(img_folder, str(idx_img) + '.jpg')# cv2.imwrite(img_path, img)# idx_img += 1# """show in multiple opencv-imshow windows"""# [cv2.namedWindow(window_name, flags=cv2.WINDOW_FREERATIO)# for window_name in camera_ip_l]# while True:# for window_name, q in zip(camera_ip_l, queue_list):# cv2.imshow(window_name, q.get())# cv2.waitKey(1)def run_multi_camera_in_a_window():user_name, user_pwd = "admin", "Admin123"camera_ip_l = [# "172.20.114.196", # ipv4# "[fe80::3aaf:29ff:fed3:d260]", # ipv6"192.168.100.182:554","192.168.100.183:554"]mp.set_start_method(method='spawn') # initqueues = [mp.Queue(maxsize=2) for _ in camera_ip_l]processes = [mp.Process(target=image_collect, args=(queues, camera_ip_l))]for queue, camera_ip in zip(queues, camera_ip_l):processes.append(mp.Process(target=image_put, args=(queue, user_name, user_pwd, camera_ip)))for process in processes:process.daemon = True # setattr(process, 'deamon', True)process.start()for process in processes:process.join()def get_biaoding():user, pwd, ip, channel = "admin", "Admin123", "192.168.100.182:554", 1cap = cv2.VideoCapture("rtsp://%s:%s@%s/cam/realmonitor?channel=%d&subtype=0" % (user, pwd, ip, channel))if cap.isOpened():print('HIKVISION')idx_img = 20img_folder = "D:/20210226/camera{}".format(ip.split('.')[-1].split(':')[0])if not os.path.exists(img_folder):os.makedirs(img_folder)while True:img = cap.read()[1]img_tmp = cv2.resize(img, (1920 // 2, 1080 // 2))cv2.imshow('image', img_tmp)key = cv2.waitKey(1)if key == ord('s'):img_path = os.path.join(img_folder, str(idx_img) + '.jpg')cv2.imwrite(img_path, img)idx_img += 1def get_img():cap1 = cv2.VideoCapture("rtsp://%s:%s@%s/cam/realmonitor?channel=%d&subtype=0" % ("admin", "Admin123", "192.168.100.181:554/", 1))# cap2 = cv2.VideoCapture("rtsp://%s:%s@%s/cam/realmonitor?channel=%d&subtype=0" % ("admin", "Admin123", "192.168.100.182:554/", 1))# cap3 = cv2.VideoCapture("rtsp://%s:%s@%s/cam/realmonitor?channel=%d&subtype=0" % ("admin", "Admin123", "192.168.100.183:554/", 1))# cap4 = cv2.VideoCapture("rtsp://%s:%s@%s/cam/realmonitor?channel=%d&subtype=0" % ("admin", "Admin123", "192.168.100.184:554/", 1))img_save1 = "E:/dataset_0902/calibrate_intri/181"# img_save1 = "D:/20210308/camera/181"# img_save2 = "D:/20210225/camera/182"# img_save3 = "D:/20210225/camera/183"# img_save4 = "D:/20210225/camera/184"if not os.path.exists(img_save1):os.makedirs(img_save1)# if not os.path.exists(img_save2):# os.makedirs(img_save2)# if not os.path.exists(img_save3):# os.makedirs(img_save3)# if not os.path.exists(img_save4):# os.makedirs(img_save4)if cap1.isOpened():print('HIKVISION')idx_img = 0while True:time1 = cap1.get(cv2.CAP_PROP_POS_MSEC)print(time1)img1 = cap1.read()[1]if (img1 is None):print("ok")continuecv2.imwrite(img_save1 + '/' + str(idx_img) + '.jpg', img1)idx_img = idx_img + 1# key = cv2.waitKey(1)# if key == ord('s'):# cv2.imwrite()# cv2.imwrite(iimg_save1 + '/' + str(idx_img) + '.jpg', img1mg_save2 + '/' + str(idx_img) + '.jpg', img2)# cv2.imwrite(img_save3 + '/' + str(idx_img) + '.jpg', img3)# cv2.imwrite(img_save4 + '/' + str(idx_img) + '.jpg', img4)# idx_img += 1img1 = cv2.resize(img1, (int(1920 / 4), int(1080 / 4)))cv2.imshow('1', img1)cv2.waitKey(1)if __name__ == '__main__':# get_biaoding()# get_img()run_multi_camera()
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