Device calibration is not working #13
Description
When I run the python examples with Python 3.6.7:
In leapuvc.py in retrieveLeapCalibration, there is the property knocking routine that retrieves the device calibration data and writes it to a struct. In the for-loop, the sharpness is correctly set on my device, however, the cap.get(cv2.CAP_PROP_SATURATION) always reads the same value, namely the one I set when I do cap.set(cv2.CAP_PROP_SATURATION, [value]).
When I run the python examples with Python 2.7.15:
The cap.set(cv2.CAP_PROP_SHARPNESS) is also not working and doesn't set the value at all.
Additionally, I get the following error in the line after the knocking:
Traceback (most recent call last):
File "stereoExample.py", line 6, in
leap = leapuvc.leapImageThread(source=2, resolution=(640, 480))
File "/home/michi/anyexo_ws/src/any_haptics/leapuvc/Python/leapuvc.py", line 33, in init
self.calibration = retrieveLeapCalibration(self.cam, self.resolution)
File "/home/michi/anyexo_ws/src/any_haptics/leapuvc/Python/leapuvc.py", line 175, in retrieveLeapCalibration
calibrationArray = struct.unpack('BBBBIffffffffffffffffffffffffffffffffffffI', bytes(calibrationBytes))
struct.error: unpack requires a string argument of length 156
I also tested to retrieve the calibration data natively with v4l2-ctl --device=2 --set-ctr=sharpness=100
Again, the setting works fine, but the saturation value is not changing.
Additional Info:
Linux 4.18.0-17-generic
opencv-python Version: 4.1.0.25