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190515.py
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190515.py
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""" Google Vision API Tutorial with a Raspberry Pi and Raspberry Pi
Camera. See more about it here:
https://www.dexterindustries.com/howto/use-google-cloud-vision-on-the-raspberry-pi/
Use Google Cloud Vision on the Raspberry Pi to take a picture with the Raspberry Pi Camera and classify it with the Google Cloud Vision API. First, we'll walk you through setting up the Google Cloud Platform. Next, we will use the Raspberry Pi Camera to take a picture of an object, and then use the Raspberry Pi to upload the picture taken to Google Cloud. We can analyze the picture and return labels (what's going on in the picture), logos (company logos that are in the picture) and faces.
This script uses the Vision API's label detection capabilities to find a label
based on an image's content.
"""
import picamera
from google.cloud import vision
client = vision.ImageAnnotatorClient()
camera = picamera.PiCamera()
# file: rfcomm-server.py
# auth: Albert Huang <albert@csail.mit.edu>
# desc: simple demonstration of a server application that uses RFCOMM sockets
#
# $Id: rfcomm-server.py 518 2007-08-10 07:20:07Z albert $
from bluetooth import *
# -*- coding: utf-8 -*-
# performs a simple device inquiry, followed by a remote name request of each
# discovered device
import os
import sys
import struct
import bluetooth._bluetooth as bluez
def printpacket(pkt):
for c in pkt:
sys.stdout.write("%02x " % struct.unpack("B",c)[0])
print
def read_inquiry_mode(sock):
"""returns the current mode, or -1 on failure"""
# save current filter
old_filter = sock.getsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, 14)
# Setup socket filter to receive only events related to the
# read_inquiry_mode command
flt = bluez.hci_filter_new()
opcode = bluez.cmd_opcode_pack(bluez.OGF_HOST_CTL,
bluez.OCF_READ_INQUIRY_MODE)
bluez.hci_filter_set_ptype(flt, bluez.HCI_EVENT_PKT)
bluez.hci_filter_set_event(flt, bluez.EVT_CMD_COMPLETE);
bluez.hci_filter_set_opcode(flt, opcode)
sock.setsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, flt )
# first read the current inquiry mode.
bluez.hci_send_cmd(sock, bluez.OGF_HOST_CTL,
bluez.OCF_READ_INQUIRY_MODE )
pkt = sock.recv(255)
status,mode = struct.unpack("xxxxxxBB", pkt)
if status != 0: mode = -1
# restore old filter
sock.setsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, old_filter )
return mode
def write_inquiry_mode(sock, mode):
"""returns 0 on success, -1 on failure"""
# save current filter
old_filter = sock.getsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, 14)
# Setup socket filter to receive only events related to the
# write_inquiry_mode command
flt = bluez.hci_filter_new()
opcode = bluez.cmd_opcode_pack(bluez.OGF_HOST_CTL,
bluez.OCF_WRITE_INQUIRY_MODE)
bluez.hci_filter_set_ptype(flt, bluez.HCI_EVENT_PKT)
bluez.hci_filter_set_event(flt, bluez.EVT_CMD_COMPLETE);
bluez.hci_filter_set_opcode(flt, opcode)
sock.setsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, flt )
# send the command!
bluez.hci_send_cmd(sock, bluez.OGF_HOST_CTL,
bluez.OCF_WRITE_INQUIRY_MODE, struct.pack("B", mode) )
pkt = sock.recv(255)
status = struct.unpack("xxxxxxB", pkt)[0]
# restore old filter
sock.setsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, old_filter )
if status != 0: return -1
return 0
def device_inquiry_with_with_rssi(sock):
# save current filter
old_filter = sock.getsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, 14)
# perform a device inquiry on bluetooth device #0
# The inquiry should last 8 * 1.28 = 10.24 seconds
# before the inquiry is performed, bluez should flush its cache of
# previously discovered devices
flt = bluez.hci_filter_new()
bluez.hci_filter_all_events(flt)
bluez.hci_filter_set_ptype(flt, bluez.HCI_EVENT_PKT)
sock.setsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, flt )
duration = 4
max_responses = 255
cmd_pkt = struct.pack("BBBBB", 0x33, 0x8b, 0x9e, duration, max_responses)
bluez.hci_send_cmd(sock, bluez.OGF_LINK_CTL, bluez.OCF_INQUIRY, cmd_pkt)
results = []
done = False
while not done:
pkt = sock.recv(255)
ptype, event, plen = struct.unpack("BBB", pkt[:3])
if event == bluez.EVT_INQUIRY_RESULT_WITH_RSSI:
pkt = pkt[3:]
print("test", pkt, type(pkt[0]))
nrsp = struct.unpack(b"B", bytes(pkt[0]))[0]
print(nrsp, type(nrsp))
for i in range(nrsp):
addr = bluez.ba2str( pkt[1+6*i:1+6*i+6] )
rssi = struct.unpack("b", pkt[1+13*nrsp+i])[0]
print("addr", addr, type(addr))
results.append( ( addr, rssi ) )
print ("[%s] RSSI: [%d]" % (addr, rssi))
elif event == bluez.EVT_INQUIRY_COMPLETE:
done = True
elif event == bluez.EVT_CMD_STATUS:
status, ncmd, opcode = struct.unpack("BBH", pkt[3:7])
if status != 0:
print ("uh oh...")
printpacket(pkt[3:7])
done = True
elif event == bluez.EVT_INQUIRY_RESULT:
pkt = pkt[3:]
nrsp = struct.unpack("B", pkt[0])[0]
for i in range(nrsp):
addr = bluez.ba2str( pkt[1+6*i:1+6*i+6] )
results.append( ( addr, -1 ) )
print ("[%s] (no RRSI)" % addr)
else:
print ("unrecognized packet type 0x%02x" % ptype)
print ("event ", event)
# restore old filter
sock.setsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, old_filter )
return results
def beacon():
dev_id = 0
try:
sock = bluez.hci_open_dev(dev_id)
except:
print ("error accessing bluetooth device...")
sys.exit(1)
try:
mode = read_inquiry_mode(sock)
except:
print ("error reading inquiry mode. ")
print ("Are you sure this a bluetooth 1.2 device?")
#print e
sys.exit(1)
print ("current inquiry mode is %d" % mode)
if mode != 1:
print ("writing inquiry mode...")
try:
result = write_inquiry_mode(sock, 1)
except:
#except Exception, e:
print ("error writing inquiry mode. Are you sure you're root?")
#print e
sys.exit(1)
if result != 0:
print ("error while setting inquiry mode")
print ("result: %d" % result)
device_inquiry_with_with_rssi(sock)
def takephoto():
#camera = picamera.PiCamera()
print("takephoto")
#client_sock.send("takephoto")
#global camea
camera.capture('cam.jpg')
def machine():
takephoto() # First take a picture
"""Run a label request on a single image"""
with open('cam.jpg', 'rb') as image_file:
content = image_file.read()
image = vision.types.Image(content=content)
response = client.label_detection(image=image)
labels = response.label_annotations
print('Labels:')
tempchar=[]
for i in range(min(3,len(labels))):
print(labels[i].description)
tempchar.append(labels[i].description)
finaldata = ','.join(tempchar)
return finaldata
def main():
server_sock=BluetoothSocket( RFCOMM )
server_sock.bind(("",PORT_ANY))
server_sock.listen(1)
port = server_sock.getsockname()[1]
#global camera
#camera = picamera.PiCamera()
uuid = "94f39d29-7d6d-437d-973b-fba39e49d4ee"
advertise_service( server_sock, "AquaPiServer",
service_id = uuid,
service_classes = [ uuid, SERIAL_PORT_CLASS ],
profiles = [ SERIAL_PORT_PROFILE ],
# protocols = [ OBEX_UUID ]
)
print ("Waiting for connection on RFCOMM channel %d" % port)
client_sock, client_info = server_sock.accept()
print ("Accepted connection from ", client_info)
client_sock.send("connect")
beacon()
try:
while True:
data = client_sock.recv(1024)
client_sock.send("recieve")
data = data.decode()
print(data, type(data))
if data == "cam":
print('running')
data = machine()
#takephoto()
#myfile=open('cam.jpg', 'rb')
#sbytes=myfile.read()
#print(type(sbytes))
#print(len(sbytes))
#print(sbytes)
#client_sock.sendall(sbytes)
#client_sock.send('end')
client_sock.send(data)
#print ("send [%s]" % tempchar)
except IOError:
pass
print ("disconnected")
client_sock.close()
server_sock.close()
print ("all done")
if __name__ == '__main__':
main()