如何将OpenCV网络摄像头与Django和React集成

Question

我有一个条形码阅读器，我使用开源Dynamsoft API和OpenCV实现了它。

现在我需要将它与Django集成，并在React中显示在我的网站上
我不知道该怎么做，我试着把代码传递给我的views.py，但不知道下一步该怎么做
这是我读取条形码的代码：

import cv2
from dbr import *
import time
reader = BarcodeReader()
def text_results_callback_func(frame_id, t_results, user_data):
print(frame_id)
for result in t_results:
text_result = TextResult(result)
print("Barcode Format : ")
print(text_result.barcode_format_string)
print("Barcode Text : ")
print(text_result.barcode_text)
print("Exception : ")
print(text_result.exception)
print("-------------")
def get_time():
localtime = time.localtime()
capturetime = time.strftime("%Y%m%d%H%M%S", localtime)
return capturetime
def read_barcode():
video_width = 0
video_height = 0

vc = cv2.VideoCapture(0)
video_width  = vc.get(cv2.CAP_PROP_FRAME_WIDTH)
video_height = vc.get(cv2.CAP_PROP_FRAME_HEIGHT)
vc.set(3, video_width)
vc.set(4, video_height) 
stride = 0
if vc.isOpened():  
rval, frame = vc.read()
stride = frame.strides[0]
else:
return
windowName = "Barcode Reader"
parameters = reader.init_frame_decoding_parameters()
parameters.max_queue_length = 30
parameters.max_result_queue_length = 30
parameters.width = video_width
parameters.height = video_height
parameters.stride = stride
parameters.image_pixel_format = EnumImagePixelFormat.IPF_RGB_888
parameters.region_top = 0
parameters.region_bottom = 100
parameters.region_left = 0
parameters.region_right = 100
parameters.region_measured_by_percentage = 1
parameters.threshold = 0.01
parameters.fps = 0
parameters.auto_filter = 1
reader.start_video_mode(parameters, text_results_callback_func)
while True:
cv2.imshow(windowName, frame)
rval, frame = vc.read()
if rval == False:
break

try:
ret = reader.append_video_frame(frame)
except:
pass
key = cv2.waitKey(1)
if key == ord('q'):
break
reader.stop_video_mode()
cv2.destroyWindow(windowName)
print("-------------------start------------------------")
reader.init_license("***************************")
read_barcode()

Answer 1

我认为您需要使用JS版本的Dynamsoft条形码阅读器在网页中使用相机扫描条形码：https://www.dynamsoft.com/barcode-reader/sdk-javascript/