Sep-15-2019, 07:39 PM
Hey All,
I'm getting this error "Segmentation fault" and i'm guessing i'm trying to access something that doesnt exist but i can't find what. When i run this script on windows it doesnt give the error but does on ubuntu. Any ideas?
Code:
I'm getting this error "Segmentation fault" and i'm guessing i'm trying to access something that doesnt exist but i can't find what. When i run this script on windows it doesnt give the error but does on ubuntu. Any ideas?
Code:
#
# 15/09/2019 Commented out cv2 and imshow
#
#
import numpy as np
import cv2
import sys
from openalpr import Alpr
import requests
import datetime
HA_ENDPOINT = 'http://192.168.1.68:8123/api/services/script/turn_on'
PLATES = ['TY19XVH']
RTSP_SOURCE = 'rtsp://192.168.0.60/mpeg4'
WINDOW_NAME = 'openalpr'
FRAME_SKIP = 10
def open_cam_rtsp(uri):
return cv2.VideoCapture(uri)
def main():
alpr = Alpr('gb', '/srv/openalpr/openalpr.conf', '/srv/openalpr/runtime_data')
if not alpr.is_loaded():
print('Error loading OpenALPR')
sys.exit(1)
alpr.set_top_n(3)
#alpr.set_default_region('new')
cap = open_cam_rtsp(RTSP_SOURCE)
if not cap.isOpened():
alpr.unload()
sys.exit('Failed to open video file!')
#cv2.namedWindow(WINDOW_NAME, cv2.WINDOW_AUTOSIZE)
#cv2.setWindowTitle(WINDOW_NAME, 'OpenALPR video test')
_frame_number = 0
#declare a stamp 10 minutes ago, initialise variable when script starts
STAMP = datetime.datetime.now() - datetime.timedelta(minutes=10)
while True:
ret_val, frame = cap.read()
if not ret_val:
print('VidepCapture.read() failed. Exiting...')
break
_frame_number += 1
if _frame_number % FRAME_SKIP != 0:
continue
#cv2.imshow(WINDOW_NAME, frame)
ret, enc = cv2.imencode("*.jpg", frame)
results = alpr.recognize_array(enc.tobytes())
#results = alpr.recognize_array(frame)
for i, plate in enumerate(results['results']):
best_candidate = plate['candidates'][0]
print('Plate #{}: {:7s} ({:.2f}%)'.format(i, best_candidate['plate'].upper(), best_candidate['confidence']))
#Does the plate match known plates
if best_candidate['plate'].upper() in PLATES:
#Has the gate fired recently? If not in the last 10 minutes then allow to fire again
if datetime.datetime.now() > STAMP:
print("Recognised")
#If a plate is recongised set a timestamp to prevent it firing lots of times until time has expired
print(datetime.datetime.now())
#Open the gate
response = requests.post(
HA_ENDPOINT,
headers={'Content-Type': 'application/json', 'x-ha-access': 'w1ll1ams!' },
data='{"entity_id": "script.ANPR"}',
)
STAMP = STAMP = datetime.datetime.now() + datetime.timedelta(minutes=2)
else:
print("Not firing as time has not exceeded")
if cv2.waitKey(1) == 27:
break
cv2.destroyAllWindows()
cap.release()
alpr.unload()
if __name__ == "__main__":
main()