Note
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12.1.10.1.8. Timer#
This script creates an instance of a DummyGrabber
and implements a timer with an interval of 1000ms
.
Every time, the interval is expired the method imageAcquisition
is called. It acquires a new image an appends it to the global
list myImages
.
To stop the timer, call the method cancel
. Additionally, the timer
is automatically interrupted after 10
iterations.
from itom import timer
from itom import dataIO
from itom import dataObject
Function for the image acquisition.
def imageAcquisition():
global iters
global t
global cam
global myImages
print("acquire next image")
cam.acquire()
d = dataObject()
cam.getVal(d)
globals()["myImages"].append(d.copy())
iters += 1
if iters >= 10:
t.stop()
Call this method (e.g. by your gui) to stop the timer.
def cancel():
global t
global cam
t.stop()
cam.stopDevice()
Define a DummyGrabber
camera and timer for a timed acquisition.
cam = dataIO("DummyGrabber")
myImages = []
iters = 0
cam.startDevice()
t = timer(1000, imageAcquisition)
Total running time of the script: (0 minutes 0.040 seconds)