cv2.solvepnp failed with an error

[dahuahy]

The Hikang camera I use cannot be calibrated internally, is it because of this reason? The environment built is the same as that of the author.thank you

[TontonTremblay]

You can use a checkerboard to get the camera calibration, would that work?

[dahuahy]

After completing camera calibration, this error occurs when turning on the camera

Running DOPE... (Listening to camera topic: '/usb_cam/image_raw') Ctrl-C to stop [ERROR] [1699867100.066902]: bad callback: <bound method Subscriber.callback of <message_filters.Subscriber object at 0x7fca43889220>> Traceback (most recent call last): File "/opt/ros/noetic/lib/python3/dist-packages/rospy/topics.py", line 750, in _invoke_callback cb(msg) File "/opt/ros/noetic/lib/python3/dist-packages/message_filters/init.py", line 76, in callback self.signalMessage(msg) File "/opt/ros/noetic/lib/python3/dist-packages/message_filters/init.py", line 58, in signalMessage cb(*(msg + args))

[TontonTremblay]

I am not sure what this error is! I am sorry I do not think I can help you.

[dahuahy]

I solved yesterday's problem, but the following situation occurred: the terminal output is like this, but the image does not have a recognition box。

Ctrl-C to stop 4 valid points found 7 valid points found 9 valid points found 9 valid points found 6 valid points found 7 valid points found 4 valid points found 4 valid points found 6 valid points found 6 valid points found 7 valid points found 6 valid points found

[TontonTremblay]

which topic are you looking at? Did you check the belief maps?

[dahuahy]

I don't know what that means of belief maps,I'm a novice. When I start the terminal, I put in roslaunch dope dope.launch and I put out 4 valid points found 7 valid points found 9 valid points found... Where in which file should I change。thank you very much

[TontonTremblay]

Check rviz to visualize different images, dope outputs different views, it is a little out of the scope of this repo to teach ros.