SystemError: new style getargs format but argument is not a tuple

[prasad01dalavi]

When we run "Main_Stereo_Vision_Prog.py" it gives the above error in stereocalibrate function

# StereoCalibrate function
flags = 0
flags |= cv2.CALIB_FIX_INTRINSIC
#flags |= cv2.CALIB_FIX_PRINCIPAL_POINT
#flags |= cv2.CALIB_USE_INTRINSIC_GUESS
#flags |= cv2.CALIB_FIX_FOCAL_LENGTH
#flags |= cv2.CALIB_FIX_ASPECT_RATIO
#flags |= cv2.CALIB_ZERO_TANGENT_DIST
#flags |= cv2.CALIB_RATIONAL_MODEL
#flags |= cv2.CALIB_SAME_FOCAL_LENGTH
#flags |= cv2.CALIB_FIX_K3
#flags |= cv2.CALIB_FIX_K4
#flags |= cv2.CALIB_FIX_K5
retS, MLS, dLS, MRS, dRS, R, T, E, F= cv2.stereoCalibrate(objpoints,
                                                          imgpointsL,
                                                          imgpointsR,
                                                          mtxL,
                                                          distL,
                                                          mtxR,
                                                          distR,
                                                          ChessImaR.shape[::-1],
                                                          criteria_stereo,
                                                          flags)

Output:

Starting calibration for the 2 cameras... 
Cameras Ready to use
Traceback (most recent call last):
  File "/home/prasad/Desktop/Distance with SV/Main_Stereo_Vision_Prog.py", line 135, in <module>
    (flags,flags))
SystemError: new style getargs format but argument is not a tuple

[LearnTechWithUs]

Hello @prasad01dalavi and thank you for testing our code!

Do you have opencv3 installed on your computer? Because some people seems to have the same kind of error when it is installed: https://github.com/ros-perception/image_pipeline/issues/124

[prasad01dalavi]

Hello LearnTechWithUs, I have opencv 2.4.9 and 2.4.13

[prasad01dalavi]

I am using ubuntu. How do I install opencv3. could you just help me with that please? What do I do? I visited that link but not able to understand what to do.

[LearnTechWithUs]

Can you try to enter this in your python command line to see which version is actually used when importing opencv? import cv2 and then cv2.__version__

[prasad01dalavi]

yes. I got 2.4.9.1. I am unable to install opencv3. Should i try desperately. May I know which version of opencv and python are you using for this project ???????

[prasad01dalavi]

done. opencv3 solves that error. But not able to get the clear display of object. FILTER COLOR DEPTH IS NOT SHOWING MY OBJECT. :-(

[prasad01dalavi]

Hello? Are you there man. Let me show you the results: Please have a look on them. can you please suggest how to get that white box as shown in your video? Please check this image. It was expected to show atleast same distance. how do I deal with this.

[LearnTechWithUs]

I'm glad you could finally run the script! The stereo calibration has certainly not been done correctly. One possible reason is that you don't have enough calibration pictures or they are maybe blurry! You should certainly take new (and more) pictures of the chessboard with your cameras.

Don't give up ;) I hope it will work!

[prasad01dalavi]

Thank you so much for your reply. I had taken 65 images (65 left + 65 right). As you said i am also doubtful about their blurry style. I am gonna do it and let you know.

[prasad01dalavi]

It works bro! Thank you so much. Moving towards accuracy like you had in your video. i was just 50% of that.