前提条件
1.了解Python语言，并会安装第三方库
2.了解Python Web Flask框架
3.了解PyTorch深度学习框架
实验环境
- Python 3.6.2
- PyTorch 1.7.1
- Flask 1.1.1
- Numpy 1.18.5
- Opencv 3.4.2
- PIL pip3 install pillow
项目结构
相关说明：
- static：用于存储静态文件，比如css、js和图片等
- templates：存放模板文件
- upload：用于保存上传文件
- flask_app.py： 应用程序主文件
- predict.py：预测文件
主要代码
完整代码，暂时没空整理，如整理完，后续会发布，敬请期待！
#!/usr/bin/python
# -*- coding: UTF-8 -*-
import imp
from flask import request, jsonify, send_from_directory, abort
from werkzeug.utils import secure_filename
from flask import Flask, render_template, jsonify, request
from predict import pre
import time
import os
import base64
app = Flask(__name__)
UPLOAD_FOLDER = "upload"
app.config["UPLOAD_FOLDER"] = UPLOAD_FOLDER
basedir = os.path.abspath(os.path.dirname(__file__))
ALLOWED_EXTENSIONS = set(["txt", "png", "jpg", "xls", "JPG", "PNG", "xlsx", "gif", "GIF"])
# 用于判断文件后缀
def allowed_file(filename):
return "." in filename and filename.rsplit(".", 1)[1] in ALLOWED_EXTENSIONS
# 上传
@app.route("/upload")
def upload_test():
return render_template("upload.html")
@app.route("/api/download/<filename>", methods=["GET"])
def download(filename):
if request.method == "GET":
if os.path.isfile(os.path.join("upload", filename)):
return send_from_directory("upload", filename, as_attachment=True)
abort(404)
# 上传文件
@app.route("/api/upload", methods=["POST"], strict_slashes=False)
def api_upload():
file_dir = os.path.join(basedir, app.config["UPLOAD_FOLDER"])
if not os.path.exists(file_dir):
os.makedirs(file_dir)
f = request.files["myfile"] # 从表单的file字段获取文件，myfile为该表单的name值
if f and allowed_file(f.filename): # 判断是否是允许上传的文件类型
fname = secure_filename(f.filename)
print(fname)
ext = fname.rsplit(".", 1)[1] # 获取文件后缀
unix_time = int(time.time())
new_filename = str(unix_time) + "." + ext # 修改了上传的文件名
f.save(os.path.join(file_dir, new_filename)) # 保存文件到upload目录
img_path = os.path.join("upload", new_filename)
print(img_path)
pre_result = pre(img_path)
print(pre_result)
token = base64.b64encode(new_filename.encode("utf-8"))
print(token)
return jsonify({"code": 0, "errmsg": "OK", "token": token, "fileName": "/api/download/" + new_filename,"detect_result:":pre_result})
else:
return jsonify({"code": 1001, "errmsg": "ERROR"})
if __name__ == "__main__":
app.run(host="0.0.0.0",port="5000",threaded=True,debug=False)
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link href="{{url_for("static", filename="obj_classification.css")}}" rel="external nofollow" rel="stylesheet" type="text/css" />
<title>图片识别--Person</title>
</head>
<body>
<h1>图片识别--Person</h1>
<div class="container">
<div class="choose">
<form action="http://IP地址:5000/api/upload" enctype="multipart/form-data" method="POST">
<input type="file" name="myfile" class="input-new" style="margin-top:20px;" />
<input type="submit" value="识别图片" class="button-new" style="margin-top:15px;" />
</form>
</div>
<div class="display">
<img src="{{ url_for("static", filename="images/test.jpg",_t=val1) }}" width="400" height="500" src="/uploads/allimg/221018/1112293146-1.png" />
{
"code": 0,
"detect_result:": [
{
"bbox": [
51.0,
265.0,
543.0,
437.0
],
"class": "b"person 0.78""
},
{
"bbox": [
43.0,
433.0,
543.0,
609.0
],
"class": "b"person 0.77""
},
{
"bbox": [
44.0,
133.0,
543.0,
309.0
],
"class": "b"person 0.76""
},
{
"bbox": [
46.0,
526.0,
543.0,
665.0
],
"class": "b"person 0.74""
},
{
"bbox": [
107.0,
51.0,
525.0,
181.0
],
"class": "b"person 0.62""
}
],
"errmsg": "OK",
"fileName": "/api/download/1645974252.jpg",
"token": "MTY0NTk3NDI1Mi5qcGc="
}
以上就是Python+Flask编写一个简单的行人检测API的详细内容，更多关于Python Flask行人检测的资料请关注服务器之家其它相关文章！
原文地址：https://blog.csdn.net/FriendshipTang/article/details/123172225
