用树莓派制作动作监控摄像系统
Posted So istes immer
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了用树莓派制作动作监控摄像系统相关的知识，希望对你有一定的参考价值。
这里我用的是CSI接口的摄像头
1.启用CSI摄像头
①摄像头提前安装好
②sudo raspi-config
进行如下配置InterFacing Options -> Camera -> Enable
2.测试
raspistill -v -o test.jpg
用raspistill这个指令可以抓拍一张图片
-v选项表示在运行摄像头时输出详细信息
-o选项用于指出输出图片的文件名（这里的文件名是 test.jpg）
raspistill --help -? 可以查看raspistill的使用帮助
要想查看我们抓拍下来的test.jpg，你可以把远程桌面调出来，也可以把图片下到本地
要想实现后者，需要两步：
①sudo apt-get install lrzsz
②sz test.jpg
3. 用一个python脚本实现摄像头的实时监控
用xshell和树莓派连接好之后，安装python3：sudo apt-get install python3
monitor.py
# Web streaming example
# Source code from the official PiCamera package
# http://picamera.readthedocs.io/en/latest/recipes2.html#web-streaming
import io
import picamera
import logging
import socketserver
from threading import Condition
from http import server
PAGE="""\\
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<head>
<title>Raspberry Pi - Surveillance Camera</title>
</head>
<body>
<center><h1>Raspberry Pi - Surveillance Camera</h1></center>
<center><h1>你在我的眼里</h1></center>
<center><img src="stream.mjpg" width="640" height="480"></center>
</body>
</html>
"""
class StreamingOutput(object):
def __init__(self):
self.frame = None
self.buffer = io.BytesIO()
self.condition = Condition()
def write(self, buf):
if buf.startswith(b'\\xff\\xd8'):
# New frame, copy the existing buffer's content and notify all
# clients it's available
self.buffer.truncate()
with self.condition:
self.frame = self.buffer.getvalue()
self.condition.notify_all()
self.buffer.seek(0)
return self.buffer.write(buf)
class StreamingHandler(server.BaseHTTPRequestHandler):
def do_GET(self):
if self.path == '/':
self.send_response(301)
self.send_header('Location', '/index.html')
self.end_headers()
elif self.path == '/index.html':
content = PAGE.encode('utf-8')
self.send_response(200)
self.send_header('Content-Type', 'text/html')
self.send_header('Content-Length', len(content))
self.end_headers()
self.wfile.write(content)
elif self.path == '/stream.mjpg':
self.send_response(200)
self.send_header('Age', 0)
self.send_header('Cache-Control', 'no-cache, private')
self.send_header('Pragma', 'no-cache')
self.send_header('Content-Type', 'multipart/x-mixed-replace; boundary=FRAME')
self.end_headers()
try:
while True:
with output.condition:
output.condition.wait()
frame = output.frame
self.wfile.write(b'--FRAME\\r\\n')
self.send_header('Content-Type', 'image/jpeg')
self.send_header('Content-Length', len(frame))
self.end_headers()
self.wfile.write(frame)
self.wfile.write(b'\\r\\n')
except Exception as e:
logging.warning(
'Removed streaming client %s: %s',
self.client_address, str(e))
else:
self.send_error(404)
self.end_headers()
class StreamingServer(socketserver.ThreadingMixIn, server.HTTPServer):
allow_reuse_address = True
daemon_threads = True
with picamera.PiCamera(resolution='640x480', framerate=24) as camera:
output = StreamingOutput()
#Uncomment the next line to change your Pi's Camera rotation (in degrees)
#camera.rotation = 90
camera.start_recording(output, format='mjpeg')
try:
address = ('', 8000)
server = StreamingServer(address, StreamingHandler)
server.serve_forever()
finally:
camera.stop_recording()
可以在本地把上面的python脚本搞好，再通过rz指令传到树莓派上
传上去之后，切换到monitor.py所在目录，执行python3 monitor.py
之后，如果你的电脑和树莓派都连的手机热点，就可以在手机浏览器中输入：http://树莓派IP:8000 ，效果如下：
以上是关于用树莓派制作动作监控摄像系统的主要内容，如果未能解决你的问题，请参考以下文章