Freenove 4WD Smart Car Board for Raspberry Pi User Manual

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98
Chapter 7 Smart video car
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Client
The client connects to the server through TCP, which receives the video stream from the server, and other
commands. And it also sends commands to the server to control the car.
Clients can run on different systems, such as windows, Linux, and so on. However, you need to install related
software and libraries.
The related program is mainly in the Video.py file under the Client folder.
Part of client code is as below:
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class VideoStreaming:
def __init__(self):
self.face_cascade = cv2.CascadeClassifier(r'haarcascade_frontalface_default.xml')
self.video_Flag=True
self.connect_Flag=False
self.face_x=0
self.face_y=0
def StartTcpClient(self,IP):
self.client_socket1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
def StopTcpcClient(self):
try:
self.client_socket.shutdown(2)
self.client_socket1.shutdown(2)
self.client_socket.close()
self.client_socket1.close()
except:
pass
def IsValidImage4Bytes(self,buf):
bValid = True
if buf[6:10] in (b'JFIF', b'Exif'):
if not buf.rstrip(b'\0\r\n').endswith(b'\xff\xd9'):
bValid = False
else:
try:
Image.open(io.BytesIO(buf)).verify()
except:
bValid = False
return bValid
def face_detect(self,img):
if sys.platform.startswith('win'):
gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)

Freenove 4WD Smart Car Board for Raspberry Pi Specifications

General

Brand	Freenove
Model	4WD Smart Car Board for Raspberry Pi
Category	Microcontrollers
Language	English