您好,登錄后才能下訂單哦!
小編給大家分享一下如何使用python實(shí)現(xiàn)監(jiān)控視頻人數(shù)統(tǒng)計(jì),希望大家閱讀完這篇文章之后都有所收獲,下面讓我們一起去探討吧!
客戶端請(qǐng)求輸入一段視頻或者一個(gè)視頻流,輸出人數(shù)或其他目標(biāo)數(shù)量,上報(bào)給上層服務(wù)器端,即提供一個(gè)http API調(diào)用算法統(tǒng)計(jì)出人數(shù),最終http上報(bào)總?cè)藬?shù)
相關(guān)技術(shù) python pytorch opencv http協(xié)議 post請(qǐng)求
Flask
Flask是一個(gè)Python實(shí)現(xiàn)web開發(fā)的微框架,對(duì)于像我對(duì)web框架不熟悉的人來說還是比較容易上手的。
Flask安裝
sudo pip install Flask
為了稍微了解一下flask是如何使用的,先做一個(gè)簡單的服務(wù)器例子。
第一個(gè)文件hello.py。
from flask import Flask app = Flask(__name__) @app.route("/") def hello(): return 'hello world!' @app.route("/python") def hello_python(): return 'hello python!' if __name__ == '__main__': app.run(host='0.0.0.0')
app.run(host=‘0.0.0.0')表示現(xiàn)在設(shè)定的ip為0.0.0.0,并且設(shè)定為0.0.0.0是非常方便的,如果你是在一臺(tái)遠(yuǎn)程電腦上設(shè)置服務(wù)器,并且那臺(tái)遠(yuǎn)程電腦的ip是172.1.1.1,那么在本地的電腦上可以設(shè)定ip為172.1.1.1來向服務(wù)器發(fā)起請(qǐng)求。
@app.route('/')表示發(fā)送request的地址是http://0.0.0.0:5000/,@app.route("/python")表示發(fā)送requests的地址為http://0.0.0.0:5000/python。
第二個(gè)文件是request.py
import requests url = 'http://0.0.0.0:5000/' r = requests.get(url) print(r.status_code) print(r.text) url = 'http://0.0.0.0:5000/python' r = requests.get(url) print(r.status_code) print(r.text)
服務(wù)器代碼
#coding:utf-8 from flask import request, Flask import os app = Flask(__name__) @app.route("/", methods=['POST']) def get_frame(): upload_file = request.files['file'] old_file_name = upload_file.filename file_path = os.path.join('/local/share/DeepLearning', 'new' + old_file_name) if upload_file: upload_file.save(file_path) print "success" return 'success' else: return 'failed' if __name__ == "__main__": app.run("0.0.0.0", port=5000)
客戶端代碼
import requests url = "http://0.0.0.0:5000" filepath='./t2.jpg' split_path = filepath.split('/') filename = split_path[-1] print(filename) file = open(filepath, 'rb') files = {'file':(filename, file, 'image/jpg')} r = requests.post(url,files = files) result = r.text print result
這種情況長傳圖片是最快的,比用opencv先打開后傳遞象素級(jí)的數(shù)字要快很多.
#!/usr/bin/env python # -*- coding: utf-8 -*- # @Time : 2021/2/20 18:19 # @Author : xiaorun # @Site : # @File : yoloDetect.py # @Software: PyCharm import sys import threading from threading import Thread import time import os import cv2 from yolo import YOLO5 import json,jsonify import requests import flask from flask import request headers = {'Content-Type': 'application/json'} url_addr="http://123.206.106.55:8065/api/video/getPersonNum/" # 創(chuàng)建一個(gè)服務(wù),把當(dāng)前這個(gè)python文件當(dāng)做一個(gè)服務(wù) server = flask.Flask(__name__) server.debug = True def gen_detector(url_video): yolo = YOLO5() opt = parseData() yolo.set_config(opt.weights, opt.device, opt.img_size, opt.conf_thres, opt.iou_thres, True) yolo.load_model() camera = cv2.VideoCapture(url_video) # 讀取視頻的fps, 大小 fps = camera.get(cv2.CAP_PROP_FPS) size = (camera.get(cv2.CAP_PROP_FRAME_WIDTH), camera.get(cv2.CAP_PROP_FRAME_HEIGHT)) print("fps: {}\nsize: {}".format(fps, size)) # 讀取視頻時(shí)長(幀總數(shù)) total = int(camera.get(cv2.CAP_PROP_FRAME_COUNT)) print("[INFO] {} total frames in video".format(total)) ret, frame = camera.read() if ret==False: video_parameter = {"accessKey": "1C7C48F44A3940EBBAQXTC736BF6530342", "code": "0000", "personNum": "video problem.."} response = requests.post(url=url_addr, headers=headers, data=json.dumps(video_parameter)) print(response.json()) max_person=0 while total>0: total=total-1 ret,frame=camera.read() if ret == True: objs = yolo.obj_detect(frame) if max_person<=len(objs): max_person=len(objs) for obj in objs: cls = obj["class"] cor = obj["color"] conf = '%.2f' % obj["confidence"] label = cls + " " x, y, w, h = obj["x"], obj["y"], obj["w"], obj["h"] cv2.rectangle(frame, (int(x), int(y)), (int(x + w), int(y + h)), tuple(cor)) cv2.putText(frame, label, (int(x), int(y)), cv2.FONT_HERSHEY_SIMPLEX, 1, cor, thickness=2) person = "there are {} person ".format(len(objs)) cv2.putText(frame, person, (20, 20), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 0, 255), thickness=3) video_parameter = {"accessKey": "1C7C48F44A3940EBBAQXTC736BF6530342", "code": "0000", "personNum": str(max_person)} if total==0: response = requests.post(url=url_addr, headers=headers, data=json.dumps(video_parameter)) print(response.json()) cv2.imshow("test",frame) if cv2.waitKey(1)==ord("q"): break @server.route('/video', methods=['post']) def get_video(): if not request.data: # 檢測是否有數(shù)據(jù) return ('fail..') video_name= request.data.decode('utf-8') # 獲取到POST過來的數(shù)據(jù),因?yàn)槲疫@里傳過來的數(shù)據(jù)需要轉(zhuǎn)換一下編碼。根據(jù)晶具體情況而定 video_json = json.loads(video_name) print(video_json) accessKey=video_json["accessKey"] if accessKey=="1C7C48F44A3940EBBAQXTC736BF6530342": code=video_json["code"] url_video=video_json["url"] print(url_video) gen_detector(url_video) # 把區(qū)獲取到的數(shù)據(jù)轉(zhuǎn)為JSON格式。 data_return={"code":200,"data":url_video,"message":"請(qǐng)求成功","sucsess":"true"} return json.dumps(data_return) else: pass # 返回JSON數(shù)據(jù)。 if __name__ == '__main__': server.run(host='192.168.1.250', port=8888)
客戶端請(qǐng)求測試:
#!/usr/bin/env python # -*- coding: utf-8 -*- # @Time : 2021/5/12 15:12 # @Author : xiaorun # @Site : # @File : test_post.py # @Software: PyCharm import requests,json headers = {'Content-Type': 'application/json'} user_info = {"accessKey":"1C7C48F44A3940EBBAQXTC736BF6530342", "code":"N000001", "url":"http:xxxx/video/xxxx.mp4" } r = requests.post("http://8.8.9.76:8888/video",headers=headers, data=json.dumps(user_info)) print (r.text)
1、簡單易用,與C/C++、Java、C# 等傳統(tǒng)語言相比,Python對(duì)代碼格式的要求沒有那么嚴(yán)格;2、Python屬于開源的,所有人都可以看到源代碼,并且可以被移植在許多平臺(tái)上使用;3、Python面向?qū)ο螅軌蛑С置嫦蜻^程編程,也支持面向?qū)ο缶幊蹋?、Python是一種解釋性語言,Python寫的程序不需要編譯成二進(jìn)制代碼,可以直接從源代碼運(yùn)行程序;5、Python功能強(qiáng)大,擁有的模塊眾多,基本能夠?qū)崿F(xiàn)所有的常見功能。
看完了這篇文章,相信你對(duì)“如何使用python實(shí)現(xiàn)監(jiān)控視頻人數(shù)統(tǒng)計(jì)”有了一定的了解,如果想了解更多相關(guān)知識(shí),歡迎關(guān)注億速云行業(yè)資訊頻道,感謝各位的閱讀!
免責(zé)聲明:本站發(fā)布的內(nèi)容(圖片、視頻和文字)以原創(chuàng)、轉(zhuǎn)載和分享為主,文章觀點(diǎn)不代表本網(wǎng)站立場,如果涉及侵權(quán)請(qǐng)聯(lián)系站長郵箱:is@yisu.com進(jìn)行舉報(bào),并提供相關(guān)證據(jù),一經(jīng)查實(shí),將立刻刪除涉嫌侵權(quán)內(nèi)容。