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i3drobotics / i3dr_deimos-ros

ROS driver for the I3DR Deimos stereo camera
http://i3drobotics.com/deimos.html
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uncalibrated error #7

Closed void-robotics closed 5 years ago

void-robotics commented 5 years ago

Hello,

I get the following error:

[N=/stereo/stereo_image_proc-120]: Rectified topic '/stereo/left/image_rect' requested but camera publishing '/stereo/left/camera_info' is uncalibrated

Although I did mkdir ~/.ros/camera_info -p and then a clean build, there is now nothing in that folder; but I had this working a month ago. What might be the issue?

I don't remember manually creating the yaml files, but is that step necessary?

jveitchmichaelis commented 5 years ago

Sorry for the delay (hopefully you figured this out in the meantime). The yaml files are generated when you calibrate the camera in ROS. Worth double checking that the path to the camera info is correct in the launch file and that they're named correctly.

file://${ROS_HOME}/camera_info/right.yaml etc

If you had it working before, I'm guessing you calibrated the cameras first. The file isn't generated automatically when you launch the node, it's a separate thing.

void-robotics commented 5 years ago

I think I just recreated the yaml; thanks

mbudris commented 5 years ago

Is it possible to use the calibration yaml files provided by tara on purchase? I renamed the files to left.yaml and right.yam, but deimos complains it is not calibrated.

jveitchmichaelis commented 5 years ago

@mbudris at the moment not directly, but you could copy the relevant parameters from the Tara yaml file and it should work.

It may be quicker to just calibrate using ROS though. It's good practice to learn how to do this, because any adjustment to the cameras e.g. mechanical, taking them out of the case, mounting it to something can ruin the factory calibration.