opencv

推荐博客:https://blog.csdn.net/wwxy1995/article/details/79735283

import cv2
 
def make_photo():
    """使用opencv拍照"""
    cap = cv2.VideoCapture(0)  # 默认的摄像头
    while True:
        ret, frame = cap.read()
        if ret:
            cv2.imshow("capture", frame)  # 弹窗口
            # 等待按键q操作关闭摄像头
            if cv2.waitKey(1) & 0xFF == ord('q'):
                file_name = "xieyang.jpeg"
                cv2.imwrite(file_name, frame)
                break
        else:
            break
 
    cap.release()
    cv2.destroyAllWindows()
 
 
def make_video():
    """使用opencv录像"""
    cap = cv2.VideoCapture(0)  # 默认的摄像头
    # 指定视频代码
    fourcc = cv2.VideoWriter_fourcc(*"DIVX")
    out = cv2.VideoWriter('xieyang.avi', fourcc, 20.0, (640,480))
    while(cap.isOpened()):
        ret, frame = cap.read()
        if ret:
            out.write(frame)
            #
            cv2.imshow('frame',frame)
            # 等待按键q操作关闭摄像头
            if cv2.waitKey(1) & 0xFF == ord('q'):
                break
        else:
            break
    cap.release()
    out.release()
    cv2.destroyAllWindows()
 
if __name__ == '__main__':
    make_video()

　　

客户端

import cv2
import numpy
import matplotlib.pyplot as plot
import requests

# 测试摄像头
cap = cv2.VideoCapture(0)

while(1):
    # get a frame
    ret, frame = cap.read()
    # show a frame
    cv2.imshow("capture", frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break
cap.release()
cv2.destroyAllWindows()

# 拍摄图片保存
import cv2

cap = cv2.VideoCapture(0)
while(1):
    # get a frame
    ret, frame = cap.read()
    # show a frame
    cv2.imshow("capture", frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        cv2.imwrite("test.jpeg", frame)
        break
cap.release()
cv2.destroyAllWindows()


# 录制视频保存
cap = cv2.VideoCapture(0)  # 默认的摄像头
# 指定视频代码
fourcc = cv2.VideoWriter_fourcc(*"DIVX")
# print(fourcc)
out = cv2.VideoWriter('xieyang.avi', fourcc, 20.0, (640,480))
while(cap.isOpened()):
    ret, frame = cap.read()
    if ret:
        out.write(frame)
        print(len(frame))
        cv2.imshow('frame',frame)
        # 等待按键q操作关闭摄像头
        if cv2.waitKey(1) & 0xFF == ord('q'):
            break
    else:
        break
cap.release()
out.release()
cv2.destroyAllWindows()


# 上传图片
files = {'file': open('fangjian2.jpeg', 'rb')}
response  =requests.post('http://127.0.0.1:8000/test/', files=files)
# response  =requests.post('http://127.0.0.1:8000/test/', data={"data":'sddggggh'}) form表单提交 ,也可以上传json
print(response.text)


#上传视频
files = {'file': open('xieyang.avi', 'rb')}
response  =requests.post('http://127.0.0.1:8000/test/', files=files)
print(response.text)


# 同步录制上传
cap = cv2.VideoCapture(0)  # 默认的摄像头
while (1):
    # get a frame
    ret, frame = cap.read()
    # show a frame
    cv2.imshow("capture", frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break
    # 同步上传是有问题的,现在先不考虑这个了
    requests.post('http://127.0.0.1:8000/test/', data=frame.tobytes(),headers={"Content-Type":"multipart/form-data"})

cap.release()
cv2.destroyAllWindows()

　　

服务端

from django.shortcuts import render,HttpResponse,redirect

def test(request):
    
    # 接收上传的视频,这个是可以的
    file_obj = request.FILES.get('file')
    print(file_obj,type(file_obj))
    f = open( file_obj.name, 'wb')
    for chunk in file_obj.chunks():
        f.write(chunk)
    f.close()
    """
    # 不知道是不是post请求改变了数据的编码,在request.body中接收的bytes和发送的bytes并不一样,导致写入的文件不能读取
    file_obj=request.body
    print(file_obj,type(file_obj))
    print(22222)  # 这可以说明就只有一次连接
    f = open('test.jpeg', 'wb')
    f.write(file_obj)
    # for chunk in file_obj.chunks():
    #     f.write(chunk)
    """
    return HttpResponse(111)

　

使用js调用摄像头:https://www.cnblogs.com/weixing/p/6555681.html