OpenCV Video streaming from FLIR Camera using Python

Question

I am having trouble streaming from a FLIR Grasshopper3 to OpenCV. Is there a way to stream directly from the FLIR camera to my code using python? When I use the code below, cv.Videocapture is not able to recognize the FLIR camera as a video source. I have tried different values in cv.Videocapture. While 0 and -1 link to the webcam app I use (iVcam), using different numbers that should find other Camera sources (1 and 2) do not identify the FLIR camera.

import numpy as np
from object_detection.utils import visualization_utils as vis_util 
import cv2 as cv
from time import time


cap = cv.VideoCapture(1)

while (True):
    ret,frame = cap.read()
    print(frame.shape)
    cv.imshow('frame',frame)

    if cv.waitKey(1) & 0XFF == ord('q'):
        break 

cap.release()
cv.destroyAllWindows()

Traceback (most recent call last): File "C:\Desktop\flirtest.py", line 10, in print(frame.shape) AttributeError: 'NoneType' object has no attribute 'shape'

Answer 1

The new version of Spinnaker SDK does not have AcquisitionOpenCV.py file in it. There is another file AcquireAndDisplay.py which works independent of OpenCV thus reducing the list of dependencies to display FLIR camera view.

Answer 2

I was able to use the Acquisition.py and AcquisitionOpenCV.py files to integrate the camera into my code. The files can be found when downloading FLIR's Spinnaker SDK found here: https://www.flir.com/products/spinnaker-sdk/