Code is simple image grabing python code from 6 different camera. Code runs perfectly at start but after sometime randomly in one of the camera grabtimee out exception is thrown. The error is not related to any specific camera.
#MV record module
import cv2
import time
import os
import threading
from pypylon import pylon
#for recording time limit
import queue
import shutil
import datetime
class mvrecordingObj:
def __init__(self,vid_save_loc,vid_fl_prefx,vid_duration):
global grab_state,mv_logger
grab_state=True
self.clear_raw_frames()
def init_cam(self):
try:
# Pypylon get camera by serial number
top_cam_post = None
bottom_cam_post = None
top_cam_pre = None
bottom_cam_pre = None
left_cam_pre = None
right_cam_pre = None
for i in pylon.TlFactory.GetInstance().EnumerateDevices():
if i.GetSerialNumber() == "23504114":
try:
top_cam_post = i
except Exception as e:
print("top post error i : "+str(e))
mv_logger.debug("top post error i : "+str(e))
....
....
self.startframegrabing(top_cam_post,bottom_cam_post,top_cam_pre,bottom_cam_pre,left_cam_pre,right_cam_pre)
except Exception as e:
print("main() Exception : ", e)
def startframegrabing(self,top_cam_post,bottom_cam_post,top_cam_pre,bottom_cam_pre,left_cam_pre,right_cam_pre):
global FRAME_LOCATION
try:
image_no_counter = 1
# VERY IMPORTANT STEP! To use Basler PyPylon OpenCV viewer you have to call .Open() method on you camera
if top_cam_post is not None:
try:
camera_top_cam_post = pylon.InstantCamera(pylon.TlFactory.GetInstance().CreateDevice(top_cam_post))
camera_top_cam_post.Open()
camera_top_cam_post.StartGrabbing(pylon.GrabStrategy_LatestImageOnly)
camera_top_cam_post.AcquisitionFrameRateEnable=True
camera_top_cam_post.AcquisitionFrameRate=50
camera_top_cam_post.ExposureTime=500
except Exception as e:
print("top post error : "+str(e))
....
....
converter = pylon.ImageFormatConverter()
converter.OutputPixelFormat = pylon.PixelType_BGR8packed
converter.OutputBitAlignment = pylon.OutputBitAlignment_MsbAligned
while True:
############# Top Post ###################
try:
t1 = int(time.time()*1000)
if camera_top_cam_post.IsGrabbing():
grabResult = camera_top_cam_post.RetrieveResult(5000, pylon.TimeoutHandling_ThrowException)
if grabResult.GrabSucceeded():
# Access the image data
image = converter.Convert(grabResult)
img = image.GetArray()
img=cv2.cvtColor(img,cv2.COLOR_BGR2RGB)
#cv2.putText(img,str(time.time())[8:-5], (20, 80),
#cv2.FONT_HERSHEY_SIMPLEX, 2, (0, 255, 0), 2, cv2.LINE_AA)
cv2.imwrite("FRAMES_TOP_POST/IMG_"+str(image_no_counter)+".jpg",img)
if image_no_counter == 1:
shutil.move("FRAMES_TOP_POST/IMG_"+str(image_no_counter)+".jpg", "FRAMES_TOP_POST/TMP/IMG_"+str(image_no_counter)+".jpg")
if(top_cam_post is not None):
grabResult.Release()
print("time for camera_top_cam_post frame : ", int(time.time()*1000) - t1)
except Exception as e:
print("Exception in top post is ", e)
mv_logger.debug("Exception in top post is "+str(e))
....
....
if(camera_top_cam_post is not None):
camera_top_cam_post.StopGrabbing()
camera_top_cam_post.close()
....
....
except Exception as e:
print("after while Exception : ", e)
mv_logger.debug("after while Exception : "+str(e))
threading.Timer(10.0,self.init_cam()).start()
def clear_raw_frames(self):
pass
def run_module(self):
#mv_logger.debug("MV Record Process Started")
self.init_cam()
#mv_logger.debug("Process ended")
if __name__=="__main__":
obj1=mvrecordingObj(os.getcwd(), "FNL_TST", 60)
obj1.run_module()
Expected output grabing and saving images from 6 different camera
The following Error is coming randomly after some time
Grab timed out. : TimeoutException thrown (file 'InstantCameraImpl.h', line 1064)
Can anyone help with this problems solution
