(-215:Assertion failed) !ssize.empty() in function 'resize'

[cognitiveRobot]

Hi Fabito,
Thank you for your code. I am trying to run webcam.py file. But, I get the following error

**Traceback (most recent call last):
File "/usr/local/lib/python3.6/multiprocessing/process.py", line 258, in _bootstrap
self.run()
File "/usr/local/lib/python3.6/multiprocessing/process.py", line 93, in run
self._target(*self._args, *self._kwargs)
File "/usr/local/lib/python3.6/multiprocessing/pool.py", line 103, in worker
initializer(initargs)
File "mainWebCam.py", line 70, in worker
frm = detect_objects(frm, net, min_confidence)
File "mainWebCam.py", line 36, in detect_objects
blob = cv.dnn.blobFromImage(frame, inScaleFactor, (inWidth, inHeight), (0, 0, 0), True, False)
cv2.error: OpenCV(3.4.2) /io/opencv/modules/imgproc/src/resize.cpp:4044: error: (-215:Assertion failed) !ssize.empty() in function 'resize'

output of pip list
$ pip list
Package Version

---

imutils 0.4.6
mtcnn 0.0.7
numpy 1.14.5
opencv-contrib-python 3.4.2.16
pip 18.0
setuptools 28.8.0
utils 0.9.0

Can you please help?

Regards
Hossain

[cognitiveRobot]

Thanks. It's been fix. it was not getting the frame from the camera.

[dscha09]

@cognitiveRobot how did you fix it?

[cognitiveRobot]

@chaine09 sorry I forgot. I will check and let you know asap.

[cognitiveRobot]

@chaine09, Sorry again. I lost the old project and couldn't reproduce the error from the new code.

[dscha09]

Hello @cognitiveRobot, can you remember if you fixed any line of code or downloaded any package?

[mmargegaj]

Hey try to check if the file is not 0 bytes... A 0 bytes image caused that error for me.

[daxingshen]

i had the same problem, it cause by some coordinate value is less than zero

[TheMrCoder]

i had the same problem, it caused by no frame or image ,try printing the length

[GayatriPurandharT]

@TheMrCoder I agree, I encountered the same issue with invalid image file.

[annu205v]

I guess the error is due to invalid image file or file not found. Make sure you are referencing the file correctly and image is not broken.

[GhassanAlSumaidaee]

The real error is due to the camera connecting, you just need to connect your camera then the error will disappear.

[LordonCN]

It's strange.. its no problem runing in vscode but terminal,i dont know how to fix it :(

[LordonCN]

I try to uninstall torch1.2.0 and found that another torch1.1 still existed.