Re: Logitech HD Pro Webcam C920 USB webcam resolution

[Ramiro Aceves <ea1abz%gmail.com@localhost>]

El 1/3/25 a las 14:59, Michael van Elst escribió:
> ea1abz%gmail.com@localhost (Ramiro Aceves) writes:
>
> > Required baseline features:
> >      ID=100 (NEON) - NOT AVAILABLE
> >      ID=  9 (FP16) - NOT AVAILABLE
>
> Both features are suppored by the PI4 CPU. But there is no
> generic way to determine that at runtime. That's why you
> see the "NOT AVAILABLE" here.
>
> OpenCV lets you skip the check by setting the environment
> variable OPENCV_SKIP_CPU_BASELINE_CHECK.

Yes!, that variable makes opencv to skip the check:

netbsd-raspa4$ export OPENCV_SKIP_CPU_BASELINE_CHECK=TRUE

netbsd-raspa4$ python3.12
Python 3.12.8 (main, Jan 10 2025, 00:27:43) [GCC 10.5.0] on netbsd10
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
>>>

Good, it does not error now when importing the opencv python module.

But this little program to test the camera does not work:

netbsd-raspa4$ cat opencv.py
import cv2

# Open the default camera (0)
cap = cv2.VideoCapture(0)

if not cap.isOpened():
    print("Error: Could not open camera.")
else:
    ret, frame = cap.read()
    if ret:
        cv2.imwrite("capture.jpg", frame)
        print("Image saved as capture.jpg")
    else:
        print("Error: Failed to capture image.")

cap.release()


netbsd-raspa4$ python3.12 opencv.py
Error: Could not open camera.
netbsd-raspa4$

Regards.